题目如下: In a country popular for train travel, you have planned some train travelling one year in advance.  The days of the year that you will travel is given as an array days.  Each day is an integer from 1 to 365. Train tickets are sold in 3 differen…

We have n chips, where the position of the ith chip is position[i]. We need to move all the chips to the same position. In one step, we can change the position of the ith chip from position[i] to: position[i] + 2 or position[i] - 2 with cost = 0. pos…

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 小根堆 日期 题目地址:https://leetcode-cn.com/problems/minimum-cost-to-connect-sticks/ 题目描述 You have some sticks with positive integer lengths. You can connect any two sticks of lengths X…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址: https://leetcode.com/problems/minimum-cost-to-hire-k-workers/description/ 题目描述: There are N workers. The i-th worker has a quality[i] and a minimum wage expectation wage[i]. Now we want to…

题目如下: Given a set of points in the xy-plane, determine the minimum area of any rectangle formed from these points, with sides not necessarily parallel to the x and y axes. If there isn't any rectangle, return 0. Example 1: Input: [[1,2],[2,1],[1,0],[…

[LeetCode]452. Minimum Number of Arrows to Burst Balloons 解题报告(Python) 标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons/description/ 题目描述: There are a number of spherical balloons spread in two-dimensio…

题目如下: 解题思路:本题和[leetcode]583. Delete Operation for Two Strings 类似,区别在于word1[i] != word2[j]的时候,是删除word1[i]还是word2[j]取决于min(dp[i-1][j]+ord(word1[i-1]),dp[i][j-1]+ord(word2[j-1])). 代码如下: class Solution(object): def minimumDeleteSum(self, s1, s2): ""…

原题链接在这里:https://leetcode.com/problems/minimum-cost-for-tickets/ 题目: In a country popular for train travel, you have planned some train travelling one year in advance.  The days of the year that you will travel is given as an array days.  Each day is…

今天看到LeetCode OJ题目下方多了"Show Tags"功能.我觉着挺好,方便刚開始学习的人分类练习.同一时候也是解题时的思路提示. [题目] Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). Find the minimum element. You may assume no…

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 动态规划 日期 题目地址:https://leetcode.com/problems/min-cost-climbing-stairs/description/ 题目描述 On a staircase, the i-th step has some non-negative cost cost[i] assigned (0 indexed). Onc…

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 动态规划 日期 题目地址:https://leetcode.com/problems/minimum-cost-for-tickets/ 题目描述 In a country popular for train travel, you have planned some train travelling one year in advance. The…

题目概述: Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2).Find the minimum element.You may assume no duplicate exists in the array. 解题思路: 在一个有顺序的数组中查找个最小值,很容易想到的就是二分法,的确,这里用的就是二分,…

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 动态规划 相似题目 参考资料 日期 题目地址:https://leetcode.com/problems/minimum-falling-path-sum/description/ 题目描述 Given a square array of integers A, we want the minimum sum of a falling path th…

一.题目描述 Follow up for "Find Minimum in Rotated Sorted Array":What if duplicates are allowed? Would this affect the run-time complexity? How and why? Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 m…

题目地址: https://leetcode.com/problems/min-cost-climbing-stairs/description/ 解题思路: 官方给出的做法是倒着来,其实正着来也可以,无非就是进入某个step有两种方式,退出某一个 step也有两种方式,因此若用dp[i]表示进入第i步并预计从这里退出的最小值,dp[i] = cost[i] + min(dp[i-1],dp[i-2]) 最后求退出时最小值,min(dp[i-1],dp[i]) 真正写代码时不必用数组记录dp,用…

In a country popular for train travel, you have planned some train travelling one year in advance.  The days of the year that you will travel is given as an array days.  Each day is an integer from 1 to 365. Train tickets are sold in 3 different ways…

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 排序 日期 题目地址:https://leetcode.com/problems/minimum-absolute-difference/ 题目描述 Given an array of distinct integers arr, find all pairs of elements with the minimum absolute differen…

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 DFS BFS 日期 [LeetCode] 题目地址:https://leetcode.com/problems/minimum-depth-of-binary-tree/ Total Accepted: 70767 Total Submissions: 243842 Difficulty: Easy 题目描述 Given a binary tree…

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 遍历一遍 日期 题目地址:https://leetcode.com/problems/minimum-domino-rotations-for-equal-row/ 题目描述 In a row of dominoes, A[i] and B[i] represent the top and bottom halves of the i-th domi…

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 线段长+线段中心+字典 日期 题目地址:https://leetcode.com/problems/minimum-area-rectangle-ii/ 题目描述 Given a set of points in the xy-plane, determine the minimum area of any rectangle formed from…

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 Java解法 Python解法 日期 题目地址:https://leetcode.com/problems/minimum-absolute-difference-in-bst/#/description 题目描述 Given a binary search tree with non-negative values, find the minimu…

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 确定对角线,找另外两点(4sum) 字典保存出现的x值,y值的点 日期 题目地址:https://leetcode.com/problems/minimum-area-rectangle/description/ 题目描述 Given a set of points in the xy-plane, determine the minimum are…

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 BFS 相似题目 参考资料 日期 题目地址:https://leetcode.com/problems/minimum-height-trees/description/ 题目描述 For a undirected graph with tree characteristics, we can choose any node as the root.…

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 动态规划 参考资料 日期 题目地址:https://leetcode.com/problems/minimum-swaps-to-make-sequences-increasing/description/ 题目描述 We have two integer sequences A and B of the same non-zero length.…

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/minimum-add-to-make-parentheses-valid/ 题目描述 Given a string S of '(' and ')' parentheses, we add the minimum number of parentheses ( '(' o…

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 滑动窗口 日期 题目地址: https://leetcode.com/problems/minimum-window-substring/description/ 题目描述 Given a string S and a string T, find the minimum window in S which will contain all the…

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/minimum-genetic-mutation/description/ 题目描述 A gene string can be represented by an 8-character long string, with choices from "A", &q…

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 中序遍历 日期 题目地址:https://leetcode.com/problems/minimum-distance-between-bst-nodes/description/ 题目描述 Given a Binary Search Tree (BST) with the root node root, return the minimum dif…

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:排序 方法二:直接找中位数 日期 题目地址:https://leetcode.com/problems/minimum-moves-to-equal-array-elements-ii/description/ 题目描述 Given a non-empty integer array, find the minimum number of m…