【Lintcode】018.Subsets II

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【Lintcode】018.Subsets II

题目: Given a list of numbers that may has duplicate numbers, return all possible subsets Notice Each element in a subset must be in non-descending order. The ordering between two subsets is free. The solution set must not contain duplicate subsets. Ex…

【LeetCode】90. Subsets II 解题报告（Python & C++）

作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 目录题目描述题目大意解题方法递归回溯法日期题目地址:https://leetcode.com/problems/subsets-ii/description/ 题目描述 Given a collection of integers that might contain duplicates, nums, return all possible subsets (the po…

【LeetCode】90. Subsets II (2 solutions)

Subsets II Given a collection of integers that might contain duplicates, S, return all possible subsets. Note: Elements in a subset must be in non-descending order. The solution set must not contain duplicate subsets. For example,If S = [1,2,2], a so…

【LeetCode】90.Subsets II

Subsets II Given a collection of integers that might contain duplicates, nums, return all possible subsets. Note: Elements in a subset must be in non-descending order. The solution set must not contain duplicate subsets. For example,If nums = [1,2,2]…

【Lintcode】017.Subsets

题目: 题解: Solution 1 () class Solution { public: vector<vector<int> > subsets(vector<int> &S) { vector<vector<int> > res{{}}; sort(S.begin(), S.end()); ; i < S.size(); ++i) { int size = res.size(); ; j < size; ++j) {…

【lintcode】二分法总结 II

Half and Half 类型题二分法的精髓在于判断目标值在前半区间还是后半区间,Half and Half类型难点在不能一次判断,可能需要一次以上的判断条件. Maximum Number in Mountain Sequence Given a mountain sequence of n integers which increase firstly and then decrease, find the mountain top. 样例 Given nums = [1, 2, 4,…

【Lintcode】033.N-Queens II

题目: Follow up for N-Queens problem. Now, instead outputting board configurations, return the total number of distinct solutions. Example For n=4, there are 2 distinct solutions. 题解: Solution 1 () class Solution { public: void dfs(int &res, int n, vec…