Nodejs String Reverse reverse()

Method Source Code

// reverse a string

function reverseSlow(s) {
  let result = '';
  for (let i = s.length - 1; i >= 0; i--) {
    result += s.charAt(i);/*from w ww  .  j ava 2  s. c om*/
  }
  
  return result;
}

function reverseFast(s) {
  let result = [];
  for (let i = s.length - 1; i >= 0; i--) {
    result.push(s.charAt(i));
  }
  return result.join('');
}

function reverseBuildIn(s) {
  return s.split('').reverse().join('');
}

String.prototype.reverse = function() {
  return this.split('').reverse().join('');
}

console.log('abcd'.reverse());

Related

1. reverse()

   String.prototype.reverse = function(){
       var dummy = "";
       for (var i = this.length-1; i >= 0; i--) {
           dummy += this[i];
       return dummy;
   

2. reverse()

   String.prototype.reverse = function(){
       return this.split("").reverse().join("");
   };
   var thing = String("supercalifragilisticexpealidocious");
   thing.reverse();
   

3. reverse()

   String.prototype.reverse = function () {
     var splitString = this.split('');
     var reverseArray = splitString.reverse();
     var joinArray = reverseArray.join('');
     return joinArray;
   };
   

4. reverse()

   var str1 = "abcdefghe";
   String.prototype.reverse = function(){
     var temp = "";
     for (var i = this.length-1; i >= 0; i--){
       console.log(this[i]);
       temp = temp + this[i];
     return temp
   function reverse (str) {
       if (str === "") {
           return "";
       } else {
           return reverse(str.substring(1)) + str.charAt(0);
   

5. reverse()

   String.prototype.reverse = function ()
       var value = '';
       for(var i = this.length - 1; i >= 0; i--)
           value += this.charAt(i);
       return value;
   };
   ...
   

6. reverse()

   String.prototype.reverse = function () {
       return this.split('').reverse().join('');
   };
   String.prototype.isPalindrome = function () {
       var s = this.toLowerCase().replace(/[^a-z]/g, '');
       return (s.reverse() === s);
   };
   ('A man, a plan, a canoe, pasta, heros, rajahs, ' +
   'a coloratura, maps, snipe, percale, macaroni, ' +
   ...
   

7. reverse()

   String.prototype.reverse=function(){
     var arr=this.toCharArray();
     return arr.reverse().join("");
   

8. reverse()

   function reverseWordsInString(str) {
       var words = str.split(' ');
       var resultStr = '';
       for (var w in words) {
           resultStr += words[w].reverse() + ' ';
       return resultStr;
   String.prototype.reverse = function () {
   ...
   

9. reverse()

   String.prototype.reverse = function () {
       'use strict';
       var s = "",
           i = this.length;
       while (i > 0) {
           s += this.substring(i - 1, i);
           i--;
       return s;
   ...