subsets专题

78. Subsets 90. Subsets II

Given a set of distinct integers, nums, return all possible subsets. Note: The solution set must not contain duplicate subsets. For example, If nums = [1,2,3], a solution is: [[3],[1],[2],[1,2

Partition to K Equal Sum Subsets问题及解法

问题描述： Given an array of integers nums and a positive integer k, find whether it's possible to divide this array into k non-empty subsets whose sums are all equal. 示例: Input: nums = [4, 3, 2, 3

leetcode78. Subsets

Given a set of distinct integers, nums, return all possible subsets. Note: The solution set must not contain duplicate subsets. For example, If nums = [1,2,3], a solution is: [ [3], [1], [2],

[LeetCode]78.Subsets

题目 Given a set of distinct integers, 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,

[LeetCode]90.Subsets II

题目 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 dupli

#78 Subsets ——Top 100 Liked Questions

Given a set of distinct integers, nums, return all possible subsets (the power set). Note: The solution set must not contain duplicate subsets. Example: Input: nums = [1,2,3]Output:[[3],[1],[2],[

leetcode_99 Subsets II

题目： Given a collection of integers that might contain duplicates, nums, return all possible subsets (the power set). Note: The solution set must not contain duplicate subsets. Example: Input: [1,2

leetcode_88 Subsets

题目： Given a set of distinct integers, nums, return all possible subsets (the power set). Note: The solution set must not contain duplicate subsets. Example: Input: nums = [1,2,3]Output:[[3],[1],

ACM-ICPC 2017 南宁赛区网络预赛 M Frequent Subsets Problem 【状态压缩+暴力】

1000ms 131072K The frequent subset problem is defined as follows. Suppose U={1, 2,…,N} is the universe, and S1, S2,…,SM are M sets over U. Given a positive constant α, 0<α≤1, a subset B (B≠0) is

Leetcode 78 Subsets + 90 Subsets II 子集

原题地址：https://leetcode.com/problems/subsets/ 题目描述 Given a set of distinct integers, nums, return all possible subsets. 给出一个不包含重复元素的整形数组，返回所有可能的子集。 Note: 注意： Elements in a subset must be in non-d

leetcode 698. Partition to K Equal Sum Subsets | 698. 划分为k个相等的子集（回溯法）

题目 https://leetcode.com/problems/partition-to-k-equal-sum-subsets/ 题解一上来以为是 dp（想到了左神讲的，将一个数组分成两个尽可能相等的部分那道题），再一想，原来是 backtracing。 class Solution {public boolean canPartitionKSubsets(int[] nums,

LeetCode——Subsets

Given a set of distinct integers, nums, return all possible subsets (the power set). Note: The solution set must not contain duplicate subsets. Example: Input: nums = [1,2,3] Output: [ [3], [1], [2],

[leetcode刷题系列]Subsets II

递归暴力枚举就好了- - vector<pair<int, int> > data;class Solution {void dfs(int cur, vector<int> & stk,vector<vector<int> > &ret){if(cur >= data.size()){ret.push_back(stk);return ;}dfs(cur + 1, stk, ret

LeetCode90. Subsets II

文章目录一、题目二、题解一、题目 Given an integer array nums that may contain duplicates, return all possible subsets (the power set). The solution set must not contain duplicate subsets. Return the solu

LeetCode刷题：78. Subsets

LeetCode刷题：78. Subsets 原题链接：https://leetcode.com/problems/subsets/description/ Given a set of distinct integers, nums, return all possible subsets (the power set). Note: The solution set must not c

leetcode 随笔 Combinations Subsets -- 利用位运算

这两天去了北京故宫博物院和八达岭长城，真是人挤人，公交车上撸了一道Combinations，手机登陆leetcode写代码总是存在奇怪的中文编码的问题，可以选择使用app黑客键盘，编码相对舒服一丢丢，如果还是存在编码问题就一行一行的删空格吧。 Given two integers n and k, return all possible combinations of k numbers o

codeforces 895C Square Subsets

题意：给定n个数，要求选出一个非空子集使得其乘积为某个数的平方，求方案数。因为某个数的完全平方数其质因子肯定都为偶数次幂，反之，质因子全为偶数次幂的数是一个完全平方数，由于每一个数字都小于等于70，最多只有19个质因数，所以我们可以对每个质因子进行状压，用dp[i][state]表示考虑到第i个数字，当前幂次方的奇偶性为state的方案数。我们可以先