原题地址: 344 Reverse String: https://leetcode.com/problems/reverse-string/description/ 541 Reverse String II: https://leetcode.com/problems/reverse-string-ii/description/ 题目&&解法: 1.Reverse String: Write a function that takes a string as input and ret…

题目描述 编写一个函数,其作用是将输入的字符串反转过来. 示例 1: 输入: "hello" 输出: "olleh" 示例 2: 输入: "A man, a plan, a canal: Panama" 输出: "amanaP :lanac a ,nalp a ,nam A" 思路 思路一: 逆序拼接字符串 思路二: 依次交换两边的值 思路三: 直接调用StringBuilder 的 reverse() 思路四: 用栈来实现反…

344. Reverse String 最基础的旋转字符串 class Solution { public: void reverseString(vector<char>& s) { if(s.empty()) return; ; ; while(start < end){ char tmp = s[end]; s[end] = s[start]; s[start] = tmp; start++; end--; } return; } }; 541. Reverse Strin…

题目描述 LeetCode 344. 反转字符串 请编写一个函数,其功能是将输入的字符串反转过来. 示例 输入: s = "hello" 返回: "olleh" Java 解答 class Solution { public String reverseString(String s) { if (s == null || s.length() <= 1) { return s; } char[] arr = s.toCharArray(); int leng…

Write a function that reverses a string. The input string is given as an array of characters char[]. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory. You may assume all the…

题意:反转字符串,用好库函数. class Solution { public: string reverseString(string s) { reverse(s.begin(),s.end()); return s; } };…

Problem: Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". 此题一般思路为:在原数组上直接对s[i]以及s[len-i-1]进行调换即可. char* reverseString(char* s) { , len = ; len = strlen(s); ; i &…

题目描述: Write a function that takes a string as input and returns the string reversed. Example:Given s = "hello", return "olleh". 解题思路: 见代码. 代码如下: class Solution(object): def reverseString(self, s): """ :type s: str :rtype…

Write a function that reverses a string. The input string is given as an array of characters char[]. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory. You may assume all the…

344. Reverse String /** * @param {string} s * @return {string} */ var reverseString = function(s) { return s.split("").reverse().join(""); }; 292. Nim Game 尼姆游戏还是很有意思的,这题有很多地方可以深入理解 /** * @param {number} n * @return {boolean} */ var ca…

problem 344. Reverse String solution: class Solution { public: void reverseString(vector<char>& s) { vector<'); ; i>=; i--) { temp[i] = s[s.size()-i-]; } ; i<s.size(); i++) { s[i] = temp[i]; } } }; solution2: class Solution { public: vo…

344. Reverse String Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". 题目大意: 字符串倒置. 解题方法: 第一个字符与最后一个非空字符对换. 注意事项: 1.字符串最后一个字符是空字符. C++代码: 1.不良代码: class Solution {…

344. Reverse String[easy] Write a function that takes a string as input and returns the string reversed. Example:Given s = "hello", return "olleh". 解法一: class Solution { public: string reverseString(string s) { , end = s.length() - ; w…

Given a string and an integer k, you need to reverse the first k characters for every 2k characters counting from the start of the string. If there are less than k characters left, reverse all of them. If there are less than 2k but greater than or eq…

［抄题］: [暴力解法]: 时间分析: 空间分析: ［奇葩输出条件］: ［奇葩corner case］: ［思维问题］: 还停留在 i < len / 2的阶段,不行,应该是指针对撞问题了 ［一句话思路］: 先要把字符串转成数组,再转回来,数据结构白学了? ［输入量］:空: 正常情况:特大:特小:程序里处理到的特殊情况:异常情况(不合法不合理的输入): ［画图］: ［一刷］: 用.tochararray转成字符串数组,顾名思义了 ［二刷］: ［三刷］: ［四刷］: ［五刷］: [五分钟肉眼deb…

------------------------------- Java也可以实现一行代码反转字符串哦 AC代码如下: public class Solution { public String reverseString(String s) { return new StringBuffer(s).reverse().toString(); } } 题目来源: https://leetcode.com/problems/reverse-string/…

一天一道LeetCode 本系列文章已全部上传至我的github,地址:ZeeCoder's Github 欢迎大家关注我的新浪微博,我的新浪微博 欢迎转载,转载请注明出处 (一)题目 Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". (二)解题 题目大意:给定一个链表,将…

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 新构建字符串 原地翻转 日期 题目地址:https://leetcode.com/problems/reverse-string/ Total Accepted: 11014 Total Submissions: 18864 Difficulty: Easy 题目描述 Write a function that takes a string as input…

[Question] Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". [My Solution] Slice 切片 class Solution(object): def reverseString(self, s): """ :type s…

请编写一个函数,其功能是将输入的字符串反转过来.示例:输入:s = "hello"返回:"olleh"详见:https://leetcode.com/problems/reverse-string/description/C++: class Solution { public: string reverseString(string s) { int n=s.size(); if(n==0||s.empty()) { return ""; }…

https://leetcode.com/problems/reverse-string/ Python语法糖爆炸时间 class Solution(object): def reverseString(self, s): return s[::-1]…

题目: Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". 思路: 题意:反转字符串 不用考虑为空的情况,这种情况sb.toString()也是null,倒叙遍历,StringBuffer相加 代码: public class Solution { public String…

下面是今天写的几道题: 292. Nim Game You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take t…

344. Reverse String Easy Write a function that reverses a string. The input string is given as an array of characters char[]. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory…

344. Reverse String 解题代码: class Solution { public: void reverseString(vector<char>& s) { , j = s.size() -; while(i < j) swap(s[i++], s[j--]); } };…

344. Reverse String Write a function that takes a string as input and returns the string reversed. Example:Given s = "hello", return "olleh". class Solution(object): def reverseString(self, s): """ :type s: str :rtype: s…

Leetcode 344:Reverse String 反转字符串 公众号:爱写bug Write a function that reverses a string. The input string is given as an array of characters char[]. Do not allocate extra space for another array, you must do this by modifying the input array in-place wit…

Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". 这道题没什么难度,直接从两头往中间走,同时交换两边的字符即可,参见代码如下: 解法一: class Solution { public: string reverseString(string s) { , right =…

原题链接在这里:https://leetcode.com/problems/reverse-string/ 题目: Write a function that takes a string as input and returns the string reversed. Example:Given s = "hello", return "olleh". 题解: Reverse string是常见题, string在Java中是primitive类型, 一旦生成不…

Given a string and an integer k, you need to reverse the first k characters for every 2k characters counting from the start of the string. If there are less than k characters left, reverse all of them. If there are less than 2k but greater than or eq…