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 日期 题目地址:https://leetcode.com/problems/triples-with-bitwise-and-equal-to-zero/ 题目描述 Given an array of integers A, find the number of triples of indices (i, j, k) such that: 0 <=…

题目链接:https://leetcode.com/problems/triples-with-bitwise-and-equal-to-zero/ 题意,已知数组A,长度不超过1000,最大的数不超过$2^{16}$,问存在多少对i,j,k,使得A[i]^A[j]^a[k]=0,i,j,k可以相等. 若直接暴力复杂度为$O(n^3)$,观察到数组不超过$2^{16}$,因此可以先枚举i和j,将结果存储,则结果不超过$2^{17}$,再查找符合的k,复杂度$O(n^2+n*2^{17})$. c…

题目如下: Given an array of integers A, find the number of triples of indices (i, j, k) such that: 0 <= i < A.length 0 <= j < A.length 0 <= k < A.length A[i] & A[j] & A[k] == 0, where & represents the bitwise-AND operator. Exampl…

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 方法一:模拟过程 方法二:求和-n*最小值 方法三:排序 日期 [LeetCode] 题目地址:https://leetcode.com/problems/minimum-moves-to-equal-array-elements/ Difficulty: Easy 题目描述 Given a non-empty integer array of si…

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 回溯法 日期 题目地址:https://leetcode.com/problems/partition-to-k-equal-sum-subsets/description/ 题目描述 Given an array of integers nums and a positive integer k, find whether it's possibl…

[LeetCode]201. Bitwise AND of Numbers Range 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/bitwise-and-of-numbers-range/description/ 题目描述: Given a range [m, n] where 0 <= m <= n <= 2147483647, return the bitwise AND of all numbers i…

[LeetCode]375. Guess Number Higher or Lower II 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址: https://leetcode.com/problems/guess-number-higher-or-lower-ii/description/ 题目描述: We are playing the Guess Game. The game is as f…

[LeetCode]430. Flatten a Multilevel Doubly Linked List 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list/description/ 题目描述: You are given…

[LeetCode]153. Find Minimum in Rotated Sorted Array 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/description/ 题目描述: Suppose an array sorted in ascending order is rotated at some pivot unknown to yo…

[LeetCode]373. Find K Pairs with Smallest Sums 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/find-k-pairs-with-smallest-sums/description/ 题目描述: You are given two integer arrays nums1 and nums2 sorted in ascending order and an integer k…