代码:# Java: Copy classSolution{publicvoidreverseString(char[] s){chartemp;for(inti=0,j=s.length-1;i<j;i++,j--){ temp=s[i]; s[i]=s[j]; s[j]=temp; } } } Python3: Copy classSolution:defreverseString(self, s:List[str]) ->None:""" Do not return anything, modify s in...
思路:通过一次循环,将字符串的顺序的拼接,直接用了string类型的加法,超时。 借鉴他人:1.先将string转换为char数组,然后进行转换,最后将char数组转换为string, new String(ch); 2.遍历时,可只遍历一半,然后就行对调操作,时间复杂度O(n/2) public class Solution { public String reverseString(String s) { if ...
1055.Shortest Way to Form String 形成字符串的最短路径【LeetCode单题讲解系列】 图灵星球TuringPlanet 396 1 145.Binary Tree Postorder Traversal二叉树的后序遍历【LeetCode单题讲解系列】 图灵星球TuringPlanet 401 0 373. Find K Pairs with Smallest Sums查找和最小的k对数字【LeetCode单题讲解系列】 图...
emmm这个很简单,转化为数组然后倒置即可 class Solution { public String reverseString(String s) { char[] x = s.toCharArray(); int len = x.length; int c = len/2; for(int i=0;i<c;i++){ char temp = x[i]; x[i] = x[len-i-1]; x[len-i-1] = temp; } return new String(x...
Can you solve this real interview question? Reverse String - Write a function that reverses a string. The input string is given as an array of characters s. You must do this by modifying the input array in-place [https://en.wikipedia.org/wiki/In-place_a
welcome to my blog LeetCode Top Interview Questions 344. Reverse String (Java版; Easy) 题目描述 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 ...
新手村100题汇总:王几行xing:【Python-转码刷题】LeetCode 力扣新手村100题,及刷题顺序 读题 这题看着简单,那咱们就试试用 Python 最简单的方法求解。 1 Python 解法一:reverse 函数 ## LeetCode 344E - Reversing String, 简单做法 reverse from typing import List class Solution: def reverseString(self,...
leetcode.cn/problems/re 解题方法 俺这版 class Solution { public String reverseStr(String s, int k) { char[] chars = s.toCharArray(); for (int i = 0; i < chars.length; i += 2 * k) { reverse(chars, i, Math.min(chars.length, i + k)-1); } return new String(chars); }...
Write a function that takes a string as input and reverse only the vowels of a string. Example 1: Givens = "hello", return "holle". Example 2: Givens = "leetcode", return "leotcede". Note 第一种解法:将字符串转化为字符数组,用一头一尾两个指针向中间夹逼,遇到两个元音字母就进行位置交换...
输入:“leetcode” 输出:“leotcede” 注意:元音不包括字母“y”。 本次解题使用的开发工具是eclipse,jdk使用的版本是1.8,环境是win7 64位系统,使用Java语言编写和测试。 02 第一种解法 元音字母包含:a e i o u 这五个,利用栈先进后出的特性,把字符串转为字符数组,利用迭代,遇到五个元音字母(包含大小写...