BOJ: 16926 풀이

Closed #159

src/main/java/com/poogle/BOJ/Q16926/Main.java

@@ -0,0 +1,60 @@
+package main.java.com.poogle.BOJ.Q16926;
+
+import java.util.ArrayList;
+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        int n = sc.nextInt();
+        int m = sc.nextInt();
+        int r = sc.nextInt();
+        int[][] a = new int[n][m];
+        for (int i = 0; i < n; i++) {
+            for (int j = 0; j < m; j++) {
+                a[i][j] = sc.nextInt();
+            }
+        }
+        ArrayList<ArrayList<Integer>> groups = new ArrayList<>();
+        int groupn = Math.min(n, m) / 2;
+        for (int k = 0; k < groupn; k++) {
+            ArrayList<Integer> group = new ArrayList<>();
+            for (int j = k; j < m - k; j++) {
+                group.add(a[k][j]);
+            }
+            for (int i = k + 1; i < n - k - 1; i++) {
+                group.add(a[i][m - k - 1]);
+            }
+            for (int j = m - k - 1; j > k; j--) {
+                group.add(a[n - k - 1][j]);
+            }
+            for (int i = n - k - 1; i > k; i--) {
+                group.add(a[i][k]);
+            }
+            groups.add(group);
+        }
+        for (int k = 0; k < groupn; k++) {
+            ArrayList<Integer> group = groups.get(k);
+            int len = group.size();
+            int index = r % len;
+            for (int j = k; j < m - k; j++, index = (index + 1) % len) {
+                a[k][j] = group.get(index);
+            }
+            for (int i = k + 1; i < n - k - 1; i++, index = (index + 1) % len) {
+                a[i][m - k - 1] = group.get(index);
+            }
+            for (int j = m - k - 1; j > k; j--, index = (index + 1) % len) {
+                a[n - k - 1][j] = group.get(index);
+            }
+            for (int i = n - k - 1; i > k; i--, index = (index + 1) % len) {
+                a[i][k] = group.get(index);
+            }
+        }
+        for (int i = 0; i < n; i++) {
+            for (int j = 0; j < m; j++) {
+                System.out.print(a[i][j] + " ");
+            }
+            System.out.println();
+        }
+    }
+}