kadai_2.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 1"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "\"mozzarella\", \"cinderella\", \"salmonella\" (「モッツアレラ」、「シンデレラ」、「サルモネラ菌」)の3つの文字列を要素としてthingsというリストを作れ。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "things = [\"mozzarella\", \"cinderella\", \"salmonella\"]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 2"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "thingsの要素で人間を参照している文字列の先頭文字を大文字にして、リストを表示せよ。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['mozzarella', 'Cinderella', 'salmonella']"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "things[1] = things[1].capitalize()\n",
    "things"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 3"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "thingsの中で、チーズの要素をすべて大文字にしてリストを表示せよ。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['MOZZARELLA', 'Cinderella', 'salmonella']"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "things[0] = things[0].upper()\n",
    "things"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 4"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "\"Chosuke\", \"Cha\", \"Ken\"を要素としてDriftersというリストを作れ。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [],
   "source": [
    "Drifters = [\"Chosuke\", \"Cha\", \"Ken\"]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 5"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Driftersリストの最後の要素を小文字にして、逆順にしてから、先頭文字を大文字に戻せ。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['Chosuke', 'Cha', 'Nek']"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Drifters[len(Drifters)-1] = ((Drifters[len(Drifters)-1].lower())[::-1]).capitalize()\n",
    "Drifters"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 6"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "e2fという英仏辞書を作り、それを表示せよ。この辞書は次のデータが初期状態で入っていることとする。dogはchien, catはchat, walrusはmorse。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'dog': 'chien', 'cat': 'chat', 'walrus': 'morse'}"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "e2f = {\"dog\":\"chien\", \"cat\":\"chat\", \"walrus\":\"morse\"}\n",
    "e2f"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 7"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "3つの単語が含まれている辞書e2fを使って、walrusという単語に対応するフランス語の単語を表示せよ。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'morse'"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "e2f[\"walrus\"]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 8"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "e2fからf2eという仏英辞書を作れ。items()メソッドを使うこと。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'chien': 'dog', 'chat': 'cat', 'morse': 'walrus'}"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "f2e = {value: key for key, value in e2f.items()}\n",
    "f2e"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 9"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "f2eを使って、フランス語のchienに対応する英語の単語を表示せよ。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'dog'"
      ]
     },
     "execution_count": 21,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "f2e[\"chien\"]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 10"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "lifeという多重レベルの辞書を作れ。最上位のキーとしては、'animals', 'plants', 'other'という文字列を使う。animalsキーは、'cats', 'octopi', 'emus'というキーを持つほかの辞書を参照するようにする。catsキーは、'Henri', 'Grumpy', 'Lucy'という文字列のリストを参照するようにする。ほかのキーはすべて空辞書を参照するようにする。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "life = {\"animals\": {\"cats\": {\"Henri\", \"Grumpy\", \"Lucy\"}, \"octopi\": {}, \"emus\": {}}, \"plants\": {}, \"other\": {}}"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 11"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "lifeの最上位のキーを表示せよ。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "dict_keys(['animals', 'plants', 'other'])"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "life.keys()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 12"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "life['animals']のキーを表示せよ。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "dict_keys(['cats', 'octopi', 'emus'])"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "life[\"animals\"].keys()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 13"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "life['animals']['cats']の値を表示せよ。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'Grumpy', 'Henri', 'Lucy'}"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "life[\"animals\"][\"cats\"]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 14"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "下図に示す重み付きグラフを今回学んだデータ構造を用いて表現せよ。どのデータ構造を使用するかは自分で決めること。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {},
   "outputs": [],
   "source": [
    "nodes = set(\"abcde\")\n",
    "edges = {\n",
    "    \"a\": {\"b\": 3, \"c\":1},\n",
    "    \"b\": {\"d\": 4},\n",
    "    \"c\": {\"b\": 6, \"e\": 8},\n",
    "    \"d\": {\"e\": 3},\n",
    "    \"e\": {\"b\": 2}\n",
    "}"
   ]
  }
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