题目描述：ReverseIntegerReversedigitsofaninteger.Example1: x123,return321Example2: x123,return321Haveyouthoughtaboutthis?Herearesomegoodquestions

Givenanarray_nums_andavalue_val_,removeallinstancesofthatvalueinplaceandreturnthenewlength.Donotallocateextraspaceforanotherarray,youmustdothisb

!(https://oscimg.oschina.net/oscnet/up3070d5f1e768a61b4151a3c0c49410b6.png)作者：HelloGitHub小鱼干摘要：找对路子，事半功倍，正如本周GitHubTrending刷LeetCode主题想表达的那般，正确的学习姿势方能让人走得更远，走进

终于作为转专业小白的我也开始刷题啦！希望能通过记录分享的形式加深解题思路的理解和记忆。也希望大神们能够指点一二。列表中的题目名称都是链接，难度和标签也都是也都是链接，方便归类搜索。NumberProblemNameDifficultyTagsProgrammingLanguages24SwapNodes

【GiantPandaCV导语】这是LeetCode的第227场周赛的题解，本期考察的知识点有「暴力，字符串，二进制枚举」等等。比赛链接https://leetcodecn.com/contest/weeklycontest227/题目一：检查数组是否经排序和轮转得到

题目要求：RotateImageYouaregivenan _n_ x _n_ 2Dmatrixrepresentinganimage.Rotatetheimageby90degrees(clockwise).Followup:Couldyoudothisinplace?!(https

问题链接LeetCode39.CombinationSum(https://www.oschina.net/action/GoToLink?urlhttps%3A%2F%2Fleetcode.com%2Fproblems%2Fcombinationsum%2Fdescription%2F)题目解析给一组数和一个目

Givenastring S,checkiftheletterscanberearrangedsothattwocharactersthatareadjacenttoeachotherarenotthesame.Ifpossible,outputanypossibleresult. Ifno

Leetcode之深度优先搜索（DFS）专题200.岛屿数量（NumberofIslands）深度优先搜索的解题详细介绍，点击(https://www.oschina.net/action/GoToLink?urlhttps%3A%2F%2Fwww.cnblogs.com%2Fqinyuguan%2Fp%2F11330303.html)

Medium！题目描述：给定一个 _n_× _n_ 的二维矩阵表示一个图像。将图像顺时针旋转90度。说明：你必须在原地(https://www.oschina.net/action/GoToLink?urlhttps%3A%2F%2Fbaike.baidu.com%2Fitem%2F%25E5%258E%259