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全部文章 / leetcode-midium （共22篇）

leetcode-50. Pow(x, n) · 快速幂

题面给定x, n, 求pow(x, n)。样例 Example 1: Input: 2.00000, 10 Output: 1024.00000 Example 2: Input: 2.10000, 3 Output: 9.26100 Example 3: I...

2019-05-17

0 544

List · leetcode-24. 交换相邻节点

题面 Given a linked list, swap every two adjacent nodes and return its head. You may not modify the values in the list's nodes, only nodes itself may ...

2019-05-16

0 504

dfs · leetcode-22.产生括号组?

题面 Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses 给定int n，代表n组括号，编码生成所有有效的括号组合（即符合括号...

2019-05-16

0 879

Array + two points leetcode.16 - 3Sum Closest

题面 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...

2019-05-14

0 540

string+DFS leetcode-17.电话号码下的字母组合

题面 Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. A mapping of digit ...

2019-05-14

0 769

Array + two points leetcode.18 - 4Sum

题面 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 uniqu...

2019-05-13

0 516

Array + two points leetcode.15-3Sum

题面 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 t...

2019-05-13

0 533

Array+DP leetcode-11.装更多的水

11. Container With Most Water 题面 Given n non-negative integers a1, a2, ..., an , where each represents a point at coordinate (i, ai). n vertical lin...

2019-05-09

0 563

string+DP leetcode-4.最长回文子串

5. Longest Palindromic Substring 题面 Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 10...

2019-05-08

0 540

leetcode-3 最长无重复字串

3. Longest Substring Without Repeating Characters 题面 Given a string, find the length of the longest substring without repeating characters. 给定字符串，找...

2019-05-06

0 513