In natural language processing and parsing, searching for a string from end to start is often simpler. For debugging, a string reverse would be useful, or as an alternative way of writing the loop (reverse the string and then loop from index 0 to n-1). ...
双指针法 Python代码 Java代码
1、题目: Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". 2、代码实现: 代码实现1: public static String reverseString(String s) { if (s == null) { return null; } if (s.length() == 0) { return ...
// 344. Reverse String // https://leetcode.com/problems/reverse-string/description/ // Two Pointers // 时间复杂度: O(n) // 空间复杂度: O(1) class Solution { public: string reverseString(string s) { int i = 0, j = s.size() - 1; while(i < j){ swap(s[i], s[j]); i...
LeetCode之Reverse String II 1、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 left, reverse all of them. If there are less than 2k but greater than or...
详细文字教程: turingplanet.org 视频纲要: 00:19 - 题目描述 01:29 - Reverse Iteration解法 03:01 - Two Pointers解题思路 06:49 - 最优解代码分析 07:22 - 最优解代码Live Coding 相关系列:【刷题套路系列】https://bit.ly/3dgNzJL 【数据结构和算法入门】https://bit.ly/39cVLJ0 【Java一周入门...
func reverseString(s []byte) { // 定义左指针 l ,初始化为 0 l := 0 // 定义右指针 r ,初始化为 s.length - 1 r := len(s) - 1 // 当 l < r 时,需要继续交换 for l < r { // 交换 s[l] 和 s[r] s[l], s[r] = s[r], s[l] // l 向右移动一位 l++ // r 向...
publicclassSolution {publicString reverseString(String s) { String result= "";for(inti = s.length()-1; i >=0; i--) { result+=s.charAt(i); }returnresult; } } 提交的时候发现超时了。。。 后来尝试换一种拼接方式,使用StringBuilder,Stringbuffer也是可以的,在不考虑线程安全的情况下,StringBuild...
*LeetCode--Reverse String II (自己的做法很笨) Reverse String II 自己的解法: 就是用一个StringBuffer来进行字符串的接收,利用一个指针来指示当前是哪一个k部分,当 i + k < s.length() 时,证明从 i 到 i + k - 1部分是可以进行反转的,而从i + k 部分到 i + 2 * k部分是直接进行拼接,利用...
Reverse a String in JavaScript. Latest version: 1.0.0, last published: a year ago. Start using reverse-string-code in your project by running `npm i reverse-string-code`. There are no other projects in the npm registry using reverse-string-code.