Approach 1- Reverse a String With a Decrementing For Loop function ReverseString(str) { // <em>Check input</em> if(!str || str.length < 2 || typeof str!== 'string') { return 'Not valid'; } // <em>Take empty array revArray</em> const revArray = []; const length = str....
JavaScript does not have a built-in method for reversing a string. To reverse a string in JavaScript, you can use a combination of three built-in methods: split(), reverse(), and join(). The first method splits a string into an array of characters and returns a new array. The second...
How to reverse a string in JavaScript is one of the most frequently asked interview questions. There could be dozens of ways we could reverse a string. However, in this article, we'll learn three different methods to reverse a string in JavaScript.
JavaScript Code: // Define a function named string_reverse with a parameter strfunctionstring_reverse(str){// Split the string into an array of characters, reverse the order, and join them back into a stringreturnstr.split("").reverse().join("");}// Log the result of calling string_re...
1. Convert it into an array and reverse it Split your string into an array of substrings using thesplit()method from the String object class. The split method requires a string as its argument. In this case, you’ll use an empty string. So the method should look like this: ...
import java.util.*;public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a = sc.nextInt(); System.out.println(new StringBuilder(String.valueOf(a)).reverse()); }} 字符串反转 接受一个只包含小写字母的字符串，然后输出该字...
function reverseString(str) { // Step 1. Use the split() method to return a new array var splitString = str.split(""); // var splitString = "hello".split(""); // ["h", "e", "l", "l", "o"] // Step 2. Use the reverse() method to reverse the new created array ...
Reverse a String With Built-In Functions function reverseString(str) { return str.split("").reverse().join("");}reverseString("hello"); Reverse a String With Recursion function reverseString(str) { return (str === '') ? '' : reverseString(str.substr(1)) + str.charAt(0);}reverse...
1/**2* @param {string} str3* @returns {string}4*/5varreverseWords =function(str) {6returnstr.trim().split(/\s+/).reverse().join(' ');7}; 正常解法, javascript 不能in-place改变字符串,开了个变量。 1/**2* @param {string} str3* @returns {string}4*/5varreverseWords =function...
a[len-1-i] = temp; } returna; }<br> vararr = [1,2,3,4,5,6,"m",8,9]; reverse( arr); 看看结果: 数组的反序排列与冒泡排序的思想十分相似,后者是比较大小进行交换以达到有序的排序,前者是数组对应内容交换,以达到数组反序排列。