Nodejs String Reverse reverse()

Method Source Code

String.prototype.reverse = function () {
    function swap(arr, a, b) {
        var temp = arr[a];
        arr[a] = arr[b];//from ww  w .  j a va 2  s.c o  m
        arr[b] = temp;
    }

    var arr = this.toCharArray();

    for (var x = 0, y = arr.length - 1; x < y; x++, y--) {
        swap(arr, x, y);
    }

    return arr.join("");
}

Related

1. reverse()

   String.prototype.reverse = function() {
     var reversed = [];
     for(var i = 0; i < this.length; i++) {
       reversed[this.length - i - 1] = this[i];
     return reversed.join('');
   

2. reverse()

   String.prototype.reverse = function () {
       var str = this.toCharArray();
       function swap(arrTemp, i, j) {
           var temp = arrTemp[i];
           arrTemp[i] = arrTemp[j];
           arrTemp[j] = temp;
       for (var i = 0, j = this.length - 1; i < j; i++, j--) {
           swap(str, i, j);
   ...
   

3. reverse()

   String.prototype.reverse = function () {
       "use strict";
       var temp = "",
           i = 0;
       for (i; i < this.length; i = i + 1) {
           temp += this[this.length - 1 - i];
       return temp;
   };
   ...
   

4. reverse()

   String.prototype.reverse = function(){
     var arr = this.toCharArray();
     function swap(arr,a,b){
       var temp = arr[a];
       arr[a] = arr[b];
       arr[b] = temp;
     for(var x=0,y=arr.length-1;  x<y ; x++,y--){
       swap(arr,x,y);
   ...
   

5. reverse()

   String.prototype.reverse = function () {
     let str = this;
     let result = '';
     for (let i = str.length - 1; i >= 0; i--) {
       result += str.unicodeCharAt(i);
     return result;
   };
   

6. reverse() // New ES2015

   String.prototype.reverse = function() {     
       "use strict";
       var result = "";
       for(var i = this.length-1; i >= 0; i--){    
           result += this.charAt(i);
       return result;
   module.exports = String;    
   ...
   

7. reverse() return this.split("").reverse().join(""); }

   String.prototype.reverse = function(){ return this.split("").reverse().join(""); }
   function palindrome(str) { 
      return str == str.reverse(); 
   console.log(palindrome("level"));
   

8. reverse(str)

   String.prototype.reverse = function(str){
       return str.split("").reverse().join("");
       console.log(str)
   var myString = new String();
   myString.reverse("Happy")
   

9. reverse(string)

   function reverse(s) {
       return s.toString().split("").reverse().join("");
       console.log('from app . js 2');