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* 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>
55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
/**
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* File: subset_sum_i_naive.cpp
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* Created Time: 2023-06-21
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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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/* バックトラッキングアルゴリズム:部分集合和 I */
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void backtrack(vector<int> &state, int target, int total, vector<int> &choices, vector<vector<int>> &res) {
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// 部分集合の和がtargetと等しいとき、解を記録
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if (total == target) {
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res.push_back(state);
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return;
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}
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// すべての選択肢を走査
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for (int i = 0; i < choices.size(); i++) {
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// 剪定:部分集合の和がtargetを超えた場合、その選択をスキップ
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if (total + choices[i] > target) {
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continue;
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}
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// 試行:選択を行い、要素とtotalを更新
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state.push_back(choices[i]);
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// 次のラウンドの選択に進む
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backtrack(state, target, total + choices[i], choices, res);
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// 回退:選択を取り消し、前の状態に復元
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state.pop_back();
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}
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}
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/* 部分集合和 I を解く(重複する部分集合を含む) */
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vector<vector<int>> subsetSumINaive(vector<int> nums, int target) {
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vector<int> state; // 状態(部分集合)
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int total = 0; // 部分集合の和
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vector<vector<int>> res; // 結果リスト(部分集合リスト)
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backtrack(state, target, total, nums, res);
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return res;
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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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vector<int> nums = {3, 4, 5};
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int target = 9;
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vector<vector<int>> res = subsetSumINaive(nums, target);
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cout << "入力配列 nums = ";
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printVector(nums);
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cout << "target = " << target << endl;
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cout << "和が " << target << " のすべての部分集合 res = " << endl;
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printVectorMatrix(res);
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cout << "この方法の結果には重複する集合が含まれています" << endl;
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return 0;
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} |