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LeetCode

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全部文章 / LeetCode （共47篇）

leetcode 62 Unique Paths 62 Unique Paths 62 Unique Paths 【走格子简单dp】

A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any ...

leetcode dp

2018-10-28

0 590

leetcode61Rotate List【将列表后k个元素移动到前面】

Given a linked list, rotate the list to the right by k places, where k is non-negative. Example 1: Input: 1->2->3->4->5->NULL, k = 2...

2018-10-28

0 466

leetcode 59. Spiral Matrix II【蛇形填数】

Given a positive integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. Example: Input: 3 Output: [ [ 1, 2, 3 ], ...

leetcode

2018-10-27

0 701

leetcode56. Merge Intervals【贪心】

Given a collection of intervals, merge all overlapping intervals. Example 1: Input: [[1,3],[2,6],[8,10],[15,18]] Output: [[1,6],[8,10],[15,18]] Exp...

2018-10-25

0 572

leetcode 55. Jump Game【贪心】

https://leetcode.com/problems/jump-game/description/ Given an array of non-negative integers, you are initially positioned at the first index of the ...

leetcode 贪心

2018-10-25

0 578

leetcode 54Spiral Matrix【贪吃蛇】

不懂自己这么水的题居然WA了这么多次而且为啥要设置flag 反正都是顺时针自己写的 class Solution { public: vector<int> spiralOrder(vector<vector<int>>& matri...

leetcode

2018-10-24

0 641

leetcode 49. Group Anagrams【素数相乘处理字符串哈希】

https://leetcode.com/problems/group-anagrams/description/ Given an array of strings, group anagrams together. Example: Input: ["eat", &q...

2018-10-23

0 761

leetcode 48. Rotate Image【旋转90】

https://leetcode.com/problems/rotate-image/description/ You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (cloc...

leetcode

2018-10-22

0 539

leetcode 43. Multiply Strings【大数乘法】

https://leetcode.com/problems/multiply-strings/description/ Given two non-negative integers num1 and num2 represented as strings, return the product ...

leetcode 大数乘法

2018-10-18

0 594

LeetCode40. Combination Sum II

https://leetcode.com/problems/combination-sum-ii/description/ Given a collection of candidate numbers (candidates) and a target number (target), find...

leetcode

2018-10-17

0 751