之虎者也的博客

力扣第50题，快速幂

力扣第49题，字符串

力扣第48题，矩阵顺时针旋转

力扣第47题，存在重复的全排列

力扣第46题，全排列，递归回溯

力扣第45题，贪心

力扣第44题，动规dp

力扣第43题，模拟乘法

力扣第42题

力扣第41题，哈希改

力扣第40题，递归回溯

力扣第39题，递归回溯

力扣第38题，递归

力扣第37题，递归回溯

力扣第36题，数独合理性

力扣第35题，二分

力扣第34题，O(logn)查找

力扣第33题，二分

力扣第32题，括号匹配

力扣第31题，排列

力扣第30题，字符串

力扣第29题，模拟除法

力扣第28题，找子串

力扣第27题，移出指定值

力扣第26题，数组去重

力扣第25题，链表

力扣第24题，链表

力扣第23题，多个有序链表合并

递归，括号匹配

力扣第21题，有序链表合并

题目地址：中文：https://leetcode-cn.com/problems/valid-parentheses/英文：https://leetcode.com/problems/valid-parentheses/题目描述：Given a string s containing just the characters ‘(’, ‘)’, ‘{’, ‘}’, ‘[’ and ‘]’, determine if the input string is valid.An input string

题目地址：中文：https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list/英文：https://leetcode.com/problems/remove-nth-node-from-end-of-list/题目描述：Given the head of a linked list, remove the nth node from the end of the list and return its head.Follow u

题目地址：中文：https://leetcode-cn.com/problems/4sum/英文：https://leetcode.com/problems/4sum/题目描述：Given an array nums of n integers and an integer target, are there elements a, b, c, and d in nums such that a + b + c + d = target? Find all unique quadruplets in

题目地址：中文：https://leetcode-cn.com/problems/letter-combinations-of-a-phone-number/英文：https://leetcode.com/problems/letter-combinations-of-a-phone-number/题目描述：Given a string containing digits from 2-9 inclusive, return all possible letter combinations that

题目地址：中文：https://leetcode-cn.com/problems/3sum-closest/英文：https://leetcode.com/problems/3sum-closest/题目描述：Given an array nums of n integers and an integer target, find three integers in nums such that the sum is closest to target. Return the sum of the

题目地址：中文：https://leetcode-cn.com/problems/3sum/英文：https://leetcode.com/problems/3sum/题目描述：Given an array nums of n integers, are there elements a, b, c in nums such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero.N

题目地址：中文：https://leetcode-cn.com/problems/longest-common-prefix/英文：https://leetcode.com/problems/longest-common-prefix/题目描述：Write a function to find the longest common prefix string amongst an array of strings.If there is no common prefix, return an em

题目地址：中文：https://leetcode-cn.com/problems/roman-to-integer/英文：https://leetcode.com/problems/roman-to-integer/题目描述：Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M.Symbol ValueI 1V 5X

题目地址：中文：https://leetcode-cn.com/problems/integer-to-roman/英文：https://leetcode.com/problems/integer-to-roman/题目描述：Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M.Symbol ValueI 1V 5X

题目地址：中文：https://leetcode-cn.com/problems/container-with-most-water/英文：https://leetcode.com/problems/container-with-most-water/题目描述：Given n non-negative integers a1, a2, …, an , where each represents a point at coordinate (i, ai). n vertical lines are d