On-Site Question 3 - SOLUTION Question Given a string, write a function that uses recursion to reverse it. Requirements You MUST use pen and paper or a whiteboard to answer this, no coding allowed!     SOLUTION Hopefully you remember this problem, yo…

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…

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…

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…

1.2 Implement a function void reverse(char *str) in C or C++ which reverses a null-terminated string. 这道题让我们用C++或C语言来翻转一个字符串,不算一道难题,在之前那道Reverse Words in a String 翻转字符串中的单词中用到了这个函数,跟那道题比起来,这题算简单的了.C语言的版本要比C++的稍微复杂一些,应为string类集成了很多有用的功能,比如得到字符串的长度,用下标…

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 {…

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…

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…

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…

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…

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…

package leadcode; /** * 541. Reverse String II * Easy * 199 * 575 * * * 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 lef…

［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…

LeetCode--Reverse String Question Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". Answer class Solution { public: string reverseString(string s) { string str(s.…

原题链接在这里:https://leetcode.com/problems/reverse-string-ii/#/description 题目: 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 l…

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…

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…

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…

541. 反转字符串 II 541. Reverse String II…

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…

problem 541. Reverse String II 题意: 给定一个字符串,每隔k个字符翻转这k个字符,剩余的小于k个则全部翻转,否则还是只翻转剩余的前k个字符. solution1: class Solution { public: string reverseStr(string s, int k) { int n = s.size(); int cnt = n / k; ; i<=cnt; i++) { ==) { if(i*k+k<n) reverse(s.begin()+i…

------------------------------- 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/…

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; } };…

Write a function that takes a string as input and returns the string reversed. Example:Given s = "hello", return "olleh". public class Solution { public String reverseString(String s) { StringBuilder sb=new StringBuilder(); sb.append(s…

Write a function that takes a string as input and returns the string reversed. Example:Given s = "hello", return "olleh". 个人博客:http://www.cnblogs.com/wdfwolf3/. 这道题就是简单的字符串逆置,在C++中字符串类型可以作为数组方式处理,所以经典的数组逆置就可以完成.这里提供两种思路: 1.classic方法头尾交…

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…

这是悦乐书的第256次更新,第269篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第123题(顺位题号是541).给定一个字符串和一个整数k,你需要反转从字符串开头算起的每2k个字符的前k个字符. 如果剩下少于k个字符,则反转所有字符. 如果小于2k但大于等于k个字符,则反转前k个字符,剩下的字符不变.例如: 输入:s ="abcdefg",k = 2 输出:"bacdfeg" 注意: 该字符串仅包含小写的英文字母. 给定字符串的长度和…

这是悦乐书的第205次更新,第217篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第73题(顺位题号是344).编写一个以字符串作为输入并返回字符串的函数.例如: 输入:"hello" 输出:"olleh" 输入:"A man, a plan, a canal: Panama" 输出:"amanaP: lanac a, nalp a, nam A" 本次解题使用的开发工具是eclipse,jdk使…