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	docs: add Japanese translate documents (#1812)
* docs: add Japanese documents (`ja/docs`) * docs: add Japanese documents (`ja/codes`) * docs: add Japanese documents * Remove pythontutor blocks in ja/ * Add an empty at the end of each markdown file. * Add the missing figures (use the English version temporarily). * Add index.md for Japanese version. * Add index.html for Japanese version. * Add missing index.assets * Fix backtracking_algorithm.md for Japanese version. * Add avatar_eltociear.jpg. Fix image links on the Japanese landing page. * Add the Japanese banner. --------- Co-authored-by: krahets <krahets@163.com>
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								ja/codes/cpp/chapter_tree/binary_tree_dfs.cpp
									
									
									
									
									
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								ja/codes/cpp/chapter_tree/binary_tree_dfs.cpp
									
									
									
									
									
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/**
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 * File: binary_tree_dfs.cpp
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 * Created Time: 2022-11-25
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 * Author: krahets (krahets@163.com)
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 */
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#include "../utils/common.hpp"
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// 走査順序を保存するリストを初期化
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vector<int> vec;
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/* 前順走査 */
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void preOrder(TreeNode *root) {
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    if (root == nullptr)
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        return;
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    // 訪問優先度:ルートノード -> 左部分木 -> 右部分木
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    vec.push_back(root->val);
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    preOrder(root->left);
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    preOrder(root->right);
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}
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/* 中順走査 */
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void inOrder(TreeNode *root) {
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    if (root == nullptr)
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        return;
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    // 訪問優先度:左部分木 -> ルートノード -> 右部分木
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    inOrder(root->left);
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    vec.push_back(root->val);
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    inOrder(root->right);
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}
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/* 後順走査 */
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void postOrder(TreeNode *root) {
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    if (root == nullptr)
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        return;
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    // 訪問優先度:左部分木 -> 右部分木 -> ルートノード
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    postOrder(root->left);
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    postOrder(root->right);
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    vec.push_back(root->val);
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}
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/* ドライバーコード */
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int main() {
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    /* 二分木を初期化 */
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    // 特定の関数を使用して配列を二分木に変換
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    TreeNode *root = vectorToTree(vector<int>{1, 2, 3, 4, 5, 6, 7});
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    cout << endl << "二分木を初期化\n" << endl;
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    printTree(root);
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    /* 前順走査 */
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    vec.clear();
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    preOrder(root);
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    cout << endl << "前順走査のノード順序 = ";
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    printVector(vec);
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    /* 中順走査 */
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    vec.clear();
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    inOrder(root);
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    cout << endl << "中順走査のノード順序 = ";
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    printVector(vec);
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    /* 後順走査 */
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    vec.clear();
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    postOrder(root);
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    cout << endl << "後順走査のノード順序 = ";
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    printVector(vec);
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    return 0;
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}
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