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289生命问题矩阵8宫格解法.html
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</style><title>289生命问题矩阵8宫格解法</title>
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<body class='typora-export os-windows'><div class='typora-export-content'>
<div id='write' class=''><h2 id='289-一题学会如何处理矩阵9宫格求和等处理问题'><span>289 一题学会如何处理矩阵9宫格求和等处理问题</span></h2><h3 id='生命游戏问题'><span>生命游戏问题</span></h3><p><span>具体参考</span><a href='https://leetcode.cn/problems/game-of-life/'><span>289. 生命游戏</span></a></p><p><span>根据 百度百科 ， 生命游戏 ，简称为 生命 ，是英国数学家约翰·何顿·康威在 1970 年发明的细胞自动机。</span></p><blockquote><p><span>给定一个包含 m × n 个格子的面板，每一个格子都可以看成是一个细胞。每个细胞都具有一个初始状态： 1 即为 活细胞 （live），或 0 即为 死细胞 （dead）。每个细胞与其八个相邻位置（水平，垂直，对角线）的细胞都遵循以下四条生存定律：</span></p></blockquote><ul><li><p><span>如果活细胞周围八个位置的活细胞数少于两个，则该位置活细胞死亡；</span></p></li><li><p><span>如果活细胞周围八个位置有两个或三个活细胞，则该位置活细胞仍然存活；</span></p></li><li><p><span>如果活细胞周围八个位置有超过三个活细胞，则该位置活细胞死亡；</span></p></li><li><p><span>如果死细胞周围正好有三个活细胞，则该位置死细胞复活；</span></p></li></ul><p><span>下一个状态是通过将上述规则同时应用于当前状态下的每个细胞所形成的，其中细胞的出生和死亡是同时发生的。给你 m x n 网格面板 board 的当前状态，返回下一个状态。</span></p><p><img src="https://s2.loli.net/2023/04/19/l92uw4QAs7fmqyS.png" referrerpolicy="no-referrer" alt="image-20230419213249633"></p><h3 id='解题分析'><span>解题分析</span></h3><p><span>题目本身不是很难，最难的核心个人认为是对于矩阵的边界问题处理，能不能找到一个统一的办法处理矩阵边界，因为不是什么时候，都有八宫格的。</span></p><p><span>在最开始的时候我想的是用举例的办法，把特例列出来，比如1x1,2x1,1x2,等列出来，然后剩下的过程在统一，在写的过程中逐步发现了可以用同一个方法去实现。</span></p><ul><li><p><span>其实从一般的考虑，我们假定一个小矩阵，那么我们也是从左上到右下去遍历的，因此我们就是要判断左上到右下是否存在，边界是否超出。由于有行列的变换，所以我们可以先固定i,判断它在不在不第一行，再判断j在不在第一行，以此分两个大类来进行情况讨论。代码如下：</span></p></li></ul><pre class="md-fences md-end-block md-fences-with-lineno ty-contain-cm modeLoaded" spellcheck="false" lang="python" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="python"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 12.3984px; left: 49px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 41px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre><div class="CodeMirror-linenumber CodeMirror-gutter-elt"><div>25</div></div></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: -41px; width: 41px;"></div><div class="CodeMirror-gutter-wrapper CodeMirror-activeline-gutter" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">1</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">int</span> <span class="cm-builtin">sum</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>; <span class="cm-operator">//</span> <span class="cm-variable">初始化总和为0</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">2</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">if</span> (<span class="cm-variable">i</span> <span class="cm-operator">></span> <span class="cm-number">0</span>) { <span class="cm-operator">//</span> <span class="cm-variable">如果当前元素不在第一行</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">3</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span> (<span class="cm-variable">j</span> <span class="cm-operator">></span> <span class="cm-number">0</span>) { <span class="cm-operator">//</span> <span class="cm-variable">如果当前元素不在第一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">4</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-builtin">sum</span> <span class="cm-operator">+=</span> <span class="cm-variable">matrix</span>[<span class="cm-variable">i</span><span class="cm-operator">-</span><span class="cm-number">1</span>][<span class="cm-variable">j</span><span class="cm-operator">-</span><span class="cm-number">1</span>]; <span class="cm-operator">//</span> <span class="cm-variable">将左上角的邻居计入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">5</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">6</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-builtin">sum</span> <span class="cm-operator">+=</span> <span class="cm-variable">matrix</span>[<span class="cm-variable">i</span><span class="cm-operator">-</span><span class="cm-number">1</span>][<span class="cm-variable">j</span>]; <span class="cm-operator">//</span> <span class="cm-variable">将正上方的邻居计入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">7</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span> (<span class="cm-variable">j</span> <span class="cm-operator"><</span> <span class="cm-variable">n</span><span class="cm-operator">-</span><span class="cm-number">1</span>) { <span class="cm-operator">//</span> <span class="cm-variable">如果当前元素不在最后一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">8</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-builtin">sum</span> <span class="cm-operator">+=</span> <span class="cm-variable">matrix</span>[<span class="cm-variable">i</span><span class="cm-operator">-</span><span class="cm-number">1</span>][<span class="cm-variable">j</span><span class="cm-operator">+</span><span class="cm-number">1</span>]; <span class="cm-operator">//</span> <span class="cm-variable">将右上角的邻居计入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">9</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">10</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">11</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">if</span> (<span class="cm-variable">j</span> <span class="cm-operator">></span> <span class="cm-number">0</span>) { <span class="cm-operator">//</span> <span class="cm-variable">如果当前元素不在第一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">12</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-builtin">sum</span> <span class="cm-operator">+=</span> <span class="cm-variable">matrix</span>[<span class="cm-variable">i</span>][<span class="cm-variable">j</span><span class="cm-operator">-</span><span class="cm-number">1</span>]; <span class="cm-operator">//</span> <span class="cm-variable">将左边的邻居计入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">13</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">14</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">if</span> (<span class="cm-variable">j</span> <span class="cm-operator"><</span> <span class="cm-variable">n</span><span class="cm-operator">-</span><span class="cm-number">1</span>) { <span class="cm-operator">//</span> <span class="cm-variable">如果当前元素不在最后一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">15</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-builtin">sum</span> <span class="cm-operator">+=</span> <span class="cm-variable">matrix</span>[<span class="cm-variable">i</span>][<span class="cm-variable">j</span><span class="cm-operator">+</span><span class="cm-number">1</span>]; <span class="cm-operator">//</span> <span class="cm-variable">将右边的邻居计入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">16</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">17</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">if</span> (<span class="cm-variable">i</span> <span class="cm-operator"><</span> <span class="cm-variable">m</span><span class="cm-operator">-</span><span class="cm-number">1</span>) { <span class="cm-operator">//</span> <span class="cm-variable">如果当前元素不在最后一行</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">18</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span> (<span class="cm-variable">j</span> <span class="cm-operator">></span> <span class="cm-number">0</span>) { <span class="cm-operator">//</span> <span class="cm-variable">如果当前元素不在第一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">19</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-builtin">sum</span> <span class="cm-operator">+=</span> <span class="cm-variable">matrix</span>[<span class="cm-variable">i</span><span class="cm-operator">+</span><span class="cm-number">1</span>][<span class="cm-variable">j</span><span class="cm-operator">-</span><span class="cm-number">1</span>]; <span class="cm-operator">//</span> <span class="cm-variable">将左下角的邻居计入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">20</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">21</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-builtin">sum</span> <span class="cm-operator">+=</span> <span class="cm-variable">matrix</span>[<span class="cm-variable">i</span><span class="cm-operator">+</span><span class="cm-number">1</span>][<span class="cm-variable">j</span>]; <span class="cm-operator">//</span> <span class="cm-variable">将正下方的邻居计入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">22</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span> (<span class="cm-variable">j</span> <span class="cm-operator"><</span> <span class="cm-variable">n</span><span class="cm-operator">-</span><span class="cm-number">1</span>) { <span class="cm-operator">//</span> <span class="cm-variable">如果当前元素不在最后一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">23</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-builtin">sum</span> <span class="cm-operator">+=</span> <span class="cm-variable">matrix</span>[<span class="cm-variable">i</span><span class="cm-operator">+</span><span class="cm-number">1</span>][<span class="cm-variable">j</span><span class="cm-operator">+</span><span class="cm-number">1</span>]; <span class="cm-operator">//</span> <span class="cm-variable">将右下角的邻居计入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">24</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">25</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 720px;"></div><div class="CodeMirror-gutters" style="height: 720px;"><div class="CodeMirror-gutter CodeMirror-linenumbers" style="width: 40px;"></div></div></div></div></pre><blockquote><p><span>这段代码使用多个嵌套的if语句来检查当前元素是否在矩阵的边界上，并只将存在的邻居计入总和。它可以正确处理所有边界情况，包括矩阵大小为1x1，1x2和2x1的情况。</span></p></blockquote><p><span>因此本题的最后算法可以这么实现，采用的事建立一个新的数组暂存的方式。</span></p><pre class="md-fences md-end-block md-fences-with-lineno ty-contain-cm modeLoaded" spellcheck="false" lang="java" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="java"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 12.3984px; left: 49px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 41px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre><div class="CodeMirror-linenumber CodeMirror-gutter-elt"><div>56</div></div></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: -41px; width: 41px;"></div><div class="CodeMirror-gutter-wrapper CodeMirror-activeline-gutter" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">1</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">class</span> <span class="cm-def">Solution</span> {</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">2</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">public</span> <span class="cm-variable-3">void</span> <span class="cm-variable">gameOfLife</span>(<span class="cm-variable-3">int</span>[][] <span class="cm-variable">board</span>) {</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">3</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">//1. 1周围<2 1-0</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">4</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">//2. 1周围[2,3] 1-1</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">5</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">//3. 1周围(3,9) 1-0</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">6</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">//4. 0周围3个1 0-1</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">7</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">//同时发生 采用非原地算法需要额外建立一个数组暂存。</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">8</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">9</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable-3">int</span> <span class="cm-variable">m</span><span class="cm-operator">=</span><span class="cm-variable">board</span>.<span class="cm-variable">length</span>;</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">10</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable-3">int</span> <span class="cm-variable">n</span><span class="cm-operator">=</span><span class="cm-variable">board</span>[<span class="cm-number">0</span>].<span class="cm-variable">length</span>;</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">11</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable-3">int</span> [][] <span class="cm-variable">copyBoard</span> <span class="cm-operator">=</span><span class="cm-keyword">new</span> <span class="cm-variable-3">int</span>[<span class="cm-variable">m</span>][<span class="cm-variable">n</span>];</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">12</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">for</span>(<span class="cm-variable-3">int</span> <span class="cm-variable">i</span><span class="cm-operator">=</span><span class="cm-number">0</span>;<span class="cm-variable">i</span><span class="cm-operator"><</span><span class="cm-variable">m</span>;<span class="cm-variable">i</span><span class="cm-operator">++</span>){</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">13</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">for</span> (<span class="cm-variable-3">int</span> <span class="cm-variable">j</span><span class="cm-operator">=</span><span class="cm-number">0</span>;<span class="cm-variable">j</span><span class="cm-operator"><</span><span class="cm-variable">n</span>;<span class="cm-variable">j</span><span class="cm-operator">++</span>){</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">14</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">copyBoard</span>[<span class="cm-variable">i</span>][<span class="cm-variable">j</span>]<span class="cm-operator">=</span><span class="cm-variable">board</span>[<span class="cm-variable">i</span>][<span class="cm-variable">j</span>];</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">15</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">16</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">17</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">for</span>(<span class="cm-variable-3">int</span> <span class="cm-variable">i</span><span class="cm-operator">=</span><span class="cm-number">0</span>;<span class="cm-variable">i</span><span class="cm-operator"><</span><span class="cm-variable">m</span>;<span class="cm-variable">i</span><span class="cm-operator">++</span>){</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">18</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">for</span>(<span class="cm-variable-3">int</span> <span class="cm-variable">j</span><span class="cm-operator">=</span><span class="cm-number">0</span>;<span class="cm-variable">j</span><span class="cm-operator"><</span><span class="cm-variable">n</span>;<span class="cm-variable">j</span><span class="cm-operator">++</span>){</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">19</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable-3">int</span> <span class="cm-variable">count</span><span class="cm-operator">=</span><span class="cm-number">0</span>;</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">20</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span>(<span class="cm-variable">i</span><span class="cm-operator">></span><span class="cm-number">0</span>){ <span class="cm-comment">//当前元素不再第一行</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">21</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span>(<span class="cm-variable">j</span><span class="cm-operator">></span><span class="cm-number">0</span>){ <span class="cm-comment">//不再第一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">22</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">count</span><span class="cm-operator">+=</span><span class="cm-variable">copyBoard</span>[<span class="cm-variable">i</span><span class="cm-operator">-</span><span class="cm-number">1</span>][<span class="cm-variable">j</span><span class="cm-operator">-</span><span class="cm-number">1</span>];<span class="cm-comment">//将左上角的邻居计入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">23</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> } </span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">24</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">count</span><span class="cm-operator">+=</span><span class="cm-variable">copyBoard</span>[<span class="cm-variable">i</span><span class="cm-operator">-</span><span class="cm-number">1</span>][<span class="cm-variable">j</span>]; <span class="cm-comment">//将上方的邻居记入。</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">25</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span>(<span class="cm-variable">j</span><span class="cm-operator"><</span><span class="cm-variable">n</span><span class="cm-operator">-</span><span class="cm-number">1</span>){ <span class="cm-comment">//如果元素不再最后一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">26</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">count</span><span class="cm-operator">+=</span><span class="cm-variable">copyBoard</span>[<span class="cm-variable">i</span><span class="cm-operator">-</span><span class="cm-number">1</span>][<span class="cm-variable">j</span><span class="cm-operator">+</span><span class="cm-number">1</span>]; <span class="cm-comment">//将右上角的记入</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">27</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> } </span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">28</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">29</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span>(<span class="cm-variable">j</span><span class="cm-operator">></span><span class="cm-number">0</span>){ <span class="cm-comment">//如果当前元素不再第一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">30</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">count</span><span class="cm-operator">+=</span><span class="cm-variable">copyBoard</span>[<span class="cm-variable">i</span>][<span class="cm-variable">j</span><span class="cm-operator">-</span><span class="cm-number">1</span>]; <span class="cm-comment">//左边的邻居记入</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">31</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">32</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span>(<span class="cm-variable">j</span><span class="cm-operator"><</span><span class="cm-variable">n</span><span class="cm-operator">-</span><span class="cm-number">1</span>){ <span class="cm-comment">//如果不再最后一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">33</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">count</span><span class="cm-operator">+=</span><span class="cm-variable">copyBoard</span>[<span class="cm-variable">i</span>][<span class="cm-variable">j</span><span class="cm-operator">+</span><span class="cm-number">1</span>]; <span class="cm-comment">//右边的邻居记入</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">34</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">35</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span>(<span class="cm-variable">i</span><span class="cm-operator"><</span><span class="cm-variable">m</span><span class="cm-operator">-</span><span class="cm-number">1</span>){ <span class="cm-comment">//如果不再最后一行</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">36</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span>(<span class="cm-variable">j</span><span class="cm-operator">></span><span class="cm-number">0</span>){ <span class="cm-comment">//如果当前元素不在第一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">37</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">count</span><span class="cm-operator">+=</span> <span class="cm-variable">copyBoard</span>[<span class="cm-variable">i</span><span class="cm-operator">+</span><span class="cm-number">1</span>][<span class="cm-variable">j</span><span class="cm-operator">-</span><span class="cm-number">1</span>]; <span class="cm-comment">//将左下角的邻居记入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">38</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">39</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">count</span><span class="cm-operator">+=</span> <span class="cm-variable">copyBoard</span>[<span class="cm-variable">i</span><span class="cm-operator">+</span><span class="cm-number">1</span>][<span class="cm-variable">j</span>]; <span class="cm-comment">// 下方的加入</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">40</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span>(<span class="cm-variable">j</span><span class="cm-operator"><</span><span class="cm-variable">n</span><span class="cm-operator">-</span><span class="cm-number">1</span>){ <span class="cm-comment">//如果当前不在最后一列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">41</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">count</span><span class="cm-operator">+=</span><span class="cm-variable">copyBoard</span>[<span class="cm-variable">i</span><span class="cm-operator">+</span><span class="cm-number">1</span>][<span class="cm-variable">j</span><span class="cm-operator">+</span><span class="cm-number">1</span>]; <span class="cm-comment">//右下角记入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">42</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">43</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }<span class="cm-comment">//</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">44</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> </span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">45</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">//规则1,3</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">46</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span>((<span class="cm-variable">copyBoard</span>[<span class="cm-variable">i</span>][<span class="cm-variable">j</span>])<span class="cm-operator">==</span><span class="cm-number">1</span><span class="cm-operator">&&</span>(<span class="cm-variable">count</span><span class="cm-operator"><</span><span class="cm-number">2</span><span class="cm-operator">||</span><span class="cm-variable">count</span><span class="cm-operator">></span><span class="cm-number">3</span>)){</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">47</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">board</span>[<span class="cm-variable">i</span>][<span class="cm-variable">j</span>]<span class="cm-operator">=</span><span class="cm-number">0</span>;</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">48</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">49</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">//规则4</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">50</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span>(<span class="cm-variable">copyBoard</span>[<span class="cm-variable">i</span>][<span class="cm-variable">j</span>]<span class="cm-operator">==</span><span class="cm-number">0</span> <span class="cm-operator">&&</span> <span class="cm-variable">count</span><span class="cm-operator">==</span><span class="cm-number">3</span>){</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">51</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">board</span>[<span class="cm-variable">i</span>][<span class="cm-variable">j</span>]<span class="cm-operator">=</span><span class="cm-number">1</span>;</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">52</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">53</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">54</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">55</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">56</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 1757px;"></div><div class="CodeMirror-gutters" style="height: 1757px;"><div class="CodeMirror-gutter CodeMirror-linenumbers" style="width: 40px;"></div></div></div></div></pre><ul><li><p><span>纯if太没有美感了，但是如果每次都这么写会很麻烦，可不可以换成for循环的方式呢？</span></p></li></ul><blockquote><p><span>其实刚才在思考的时候，我们就是想，以[i] [j] 下标为核心的九宫格遍历一边，但是要考虑到边界问题，如果没有第一列，或者第三列，那么相当于遍历的就是2x3的矩阵，没有第一行，或者第三行，那么就相当于是一个3x2的矩阵，这样看来其实只要是确认了边界问题。</span></p><p><span>因此我们可以构建两个循环，第一个循环，是对行的范围而言，第二个是对列的范围而言</span></p></blockquote><pre class="md-fences md-end-block md-fences-with-lineno ty-contain-cm modeLoaded" spellcheck="false" lang="java"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="java"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 12.3984px; left: 38px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 30px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre><div class="CodeMirror-linenumber CodeMirror-gutter-elt"><div>8</div></div></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: -30px; width: 30px;"></div><div class="CodeMirror-gutter-wrapper CodeMirror-activeline-gutter" style="left: -30px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 21px;">1</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">int</span> <span class="cm-variable">sum</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>; <span class="cm-comment">// 初始化总和为0</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -30px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 21px;">2</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">for</span> (<span class="cm-variable-3">int</span> <span class="cm-variable">x</span> <span class="cm-operator">=</span> <span class="cm-variable">Math</span>.<span class="cm-variable">max</span>(<span class="cm-number">0</span>, <span class="cm-variable">i</span><span class="cm-operator">-</span><span class="cm-number">1</span>); <span class="cm-variable">x</span> <span class="cm-operator"><</span> <span class="cm-variable">Math</span>.<span class="cm-variable">min</span>(<span class="cm-variable">m</span>, <span class="cm-variable">i</span><span class="cm-operator">+</span><span class="cm-number">2</span>); <span class="cm-variable">x</span><span class="cm-operator">++</span>) { <span class="cm-comment">// 遍历当前元素周围的所有行</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -30px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 21px;">3</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">for</span> (<span class="cm-variable-3">int</span> <span class="cm-variable">y</span> <span class="cm-operator">=</span> <span class="cm-variable">Math</span>.<span class="cm-variable">max</span>(<span class="cm-number">0</span>, <span class="cm-variable">j</span><span class="cm-operator">-</span><span class="cm-number">1</span>); <span class="cm-variable">y</span> <span class="cm-operator"><</span> <span class="cm-variable">Math</span>.<span class="cm-variable">min</span>(<span class="cm-variable">n</span>, <span class="cm-variable">j</span><span class="cm-operator">+</span><span class="cm-number">2</span>); <span class="cm-variable">y</span><span class="cm-operator">++</span>) { <span class="cm-comment">// 遍历当前元素周围的所有列</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -30px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 21px;">4</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span> (<span class="cm-variable">x</span> <span class="cm-operator">!=</span> <span class="cm-variable">i</span> <span class="cm-operator">||</span> <span class="cm-variable">y</span> <span class="cm-operator">!=</span> <span class="cm-variable">j</span>) { <span class="cm-comment">// 如果当前位置不是当前元素本身</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -30px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 21px;">5</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">sum</span> <span class="cm-operator">+=</span> <span class="cm-variable">matrix</span>[<span class="cm-variable">x</span>][<span class="cm-variable">y</span>]; <span class="cm-comment">// 将当前位置的值计入总和</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -30px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 21px;">6</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -30px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 21px;">7</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -30px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 21px;">8</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 288px;"></div><div class="CodeMirror-gutters" style="height: 288px;"><div class="CodeMirror-gutter CodeMirror-linenumbers" style="width: 29px;"></div></div></div></div></pre><p><span>对这段代码进行解释：</span></p><blockquote><p><span>这段代码使用两个嵌套的for循环来遍历当前元素周围的所有元素。</span><code>Math.max(0, i-1)</code><span>和</span><code>Math.min(m, i+2)</code><span>用来确定要遍历的行的范围，</span><code>Math.max(0, j-1)</code><span>和</span><code>Math.min(n, j+2)</code><span>用来确定要遍历的列的范围。</span></p><p><code>Math.max(0, i-1)</code><span>表示要遍历的行的起始位置，它取</span><code>0</code><span>和</span><code>i-1</code><span>中的较大值。这是因为如果</span><code>i-1</code><span>小于0，那么它表示一个不存在的行，因此不能将其作为起始位置。在这种情况下，我们需要将起始位置设为0，即矩阵的第一行。</span></p><p><span>类似地，</span><code>Math.min(m, i+2)</code><span>表示要遍历的行的结束位置，它取</span><code>m</code><span>和</span><code>i+2</code><span>中的较小值。这是因为如果</span><code>i+2</code><span>大于等于m，那么它表示一个不存在的行，因此不能将其作为结束位置。在这种情况下，我们需要将结束位置设为m，即矩阵的最后一行之后的位置。</span></p><p><span>对于列也是同理。</span><code>Math.max(0, j-1)</code><span>表示要遍历的列的起始位置，它取</span><code>0</code><span>和</span><code>j-1</code><span>中的较大值。这是因为如果</span><code>j-1</code><span>小于0，那么它表示一个不存在的列，因此不能将其作为起始位置。在这种情况下，我们需要将起始位置设为0，即矩阵的第一列。</span></p><p><span>类似地，</span><code>Math.min(n, j+2)</code><span>表示要遍历的列的结束位置，它取</span><code>n</code><span>和</span><code>j+2</code><span>中的较小值。这是因为如果</span><code>j+2</code><span>大于等于n，那么它表示一个不存在的列，因此不能将其作为结束位置。在这种情况下，我们需要将结束位置设为n，即矩阵的最后一列之后的位置。</span></p></blockquote><h3 id='采用标记的做法不用暂存数组'><span>采用标记的做法，不用暂存数组</span></h3><p><span>同时提供了一种新的找边界矩阵的方法，经过上面两个的洗礼以后，官方给出的这种答案也好看懂了，本质上还是对矩阵进行范围的确定。</span></p><pre class="md-fences md-end-block md-fences-with-lineno ty-contain-cm modeLoaded" spellcheck="false" lang="java" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="java"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 12.3984px; left: 49px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 41px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre><div class="CodeMirror-linenumber CodeMirror-gutter-elt"><div>30</div></div></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: -41px; width: 41px;"></div><div class="CodeMirror-gutter-wrapper CodeMirror-activeline-gutter" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">1</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">int</span> [] <span class="cm-variable">neighbors</span> <span class="cm-operator">=</span>{<span class="cm-number">0</span>,<span class="cm-number">1</span>,<span class="cm-operator">-</span><span class="cm-number">1</span>};</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">2</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">int</span> <span class="cm-variable">rows</span> <span class="cm-operator">=</span> <span class="cm-variable">board</span>.<span class="cm-variable">length</span>;</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">3</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">int</span> <span class="cm-variable">cols</span> <span class="cm-operator">=</span> <span class="cm-variable">board</span>[<span class="cm-number">0</span>].<span class="cm-variable">length</span>;</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">4</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">for</span> (<span class="cm-variable-3">int</span> <span class="cm-variable">row</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>; <span class="cm-variable">row</span> <span class="cm-operator"><</span> <span class="cm-variable">rows</span>; <span class="cm-variable">row</span><span class="cm-operator">++</span>) {</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">5</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">for</span> (<span class="cm-variable-3">int</span> <span class="cm-variable">col</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>; <span class="cm-variable">col</span> <span class="cm-operator"><</span> <span class="cm-variable">cols</span>; <span class="cm-variable">col</span><span class="cm-operator">++</span>) {</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">6</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">7</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">// 对于每一个细胞统计其八个相邻位置里的活细胞数量</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">8</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable-3">int</span> <span class="cm-variable">liveNeighbors</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>;</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">9</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-tab" role="presentation" cm-text=" "> </span><span class="cm-tab" role="presentation" cm-text=" "> </span><span class="cm-tab" role="presentation" cm-text=" "> </span><span class="cm-tab" role="presentation" cm-text=" "> </span><span class="cm-comment">//构建9宫格矩阵，并对范围进行确认</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">10</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">for</span> (<span class="cm-variable-3">int</span> <span class="cm-variable">i</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>; <span class="cm-variable">i</span> <span class="cm-operator"><</span> <span class="cm-number">3</span>; <span class="cm-variable">i</span><span class="cm-operator">++</span>) {</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">11</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">for</span> (<span class="cm-variable-3">int</span> <span class="cm-variable">j</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>; <span class="cm-variable">j</span> <span class="cm-operator"><</span> <span class="cm-number">3</span>; <span class="cm-variable">j</span><span class="cm-operator">++</span>) {</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">12</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">13</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span> (<span class="cm-operator">!</span>(<span class="cm-variable">neighbors</span>[<span class="cm-variable">i</span>] <span class="cm-operator">==</span> <span class="cm-number">0</span> <span class="cm-operator">&&</span> <span class="cm-variable">neighbors</span>[<span class="cm-variable">j</span>] <span class="cm-operator">==</span> <span class="cm-number">0</span>)) {</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">14</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">// 相邻位置的坐标</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">15</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">// 左上 上 右上</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">16</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">// 左 中 右</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">17</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">// 左下 下 右下</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">18</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">//这里和if那里的逻辑是一样的，对上面的依次判断</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">19</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable-3">int</span> <span class="cm-variable">r</span> <span class="cm-operator">=</span> (<span class="cm-variable">row</span> <span class="cm-operator">+</span> <span class="cm-variable">neighbors</span>[<span class="cm-variable">i</span>]);</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">20</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable-3">int</span> <span class="cm-variable">c</span> <span class="cm-operator">=</span> (<span class="cm-variable">col</span> <span class="cm-operator">+</span> <span class="cm-variable">neighbors</span>[<span class="cm-variable">j</span>]);</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">21</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">22</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">// 查看相邻的细胞是否是活细胞</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">23</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-comment">//判断是否在原矩阵范围内 行和列都要满足</span></span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">24</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-keyword">if</span> ((<span class="cm-variable">r</span> <span class="cm-operator"><</span> <span class="cm-variable">rows</span> <span class="cm-operator">&&</span> <span class="cm-variable">r</span> <span class="cm-operator">>=</span> <span class="cm-number">0</span>) <span class="cm-operator">&&</span> (<span class="cm-variable">c</span> <span class="cm-operator"><</span> <span class="cm-variable">cols</span> <span class="cm-operator">&&</span> <span class="cm-variable">c</span> <span class="cm-operator">>=</span> <span class="cm-number">0</span>) <span class="cm-operator">&&</span> (<span class="cm-variable">Math</span>.<span class="cm-variable">abs</span>(<span class="cm-variable">board</span>[<span class="cm-variable">r</span>][<span class="cm-variable">c</span>]) <span class="cm-operator">==</span> <span class="cm-number">1</span>)) {</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">25</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> <span class="cm-variable">liveNeighbors</span> <span class="cm-operator">+=</span> <span class="cm-number">1</span>;</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">26</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">27</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">28</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 32px;">29</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }</span></pre></div><div style="position: relative;"><div class="CodeMirror-gutter-wrapper" style="left: -41px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt CodeMirror-linenumber-show" style="left: 0px; width: 32px;">30</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre></div></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 950px;"></div><div class="CodeMirror-gutters" style="height: 950px;"><div class="CodeMirror-gutter CodeMirror-linenumbers" style="width: 40px;"></div></div></div></div></pre><p> </p></div></div>
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