Nodejs Array Reverse reverse()

Method Source Code

// Given a numerical array, reverse the order of the values. This should be done in place

Array.prototype.reverse = function() {
   if (this.length > 1) {
      for (var i = 0; i < Math.floor(this.length/2); i++){
         var temp = this[i];
         this[i] = this[this.length-1-i];
         this[this.length-1-i] = temp;
         console.log(this);/*  w w  w.j av a  2  s.  c  om*/
      }
   }
}


var array = [0,1,2,3,4];
console.log(Math.floor(array.length/2));
array.reverse()
// console.log(array);

Related

1. reverse()

   Array.prototype.reverse = function() {
     for (var i = 0, j = this.length - 1; i < j; i++, j--) {
       var tmp = this[i];
       this[i] = this[j];
       this[j] = tmp;
     return this;
   };
   

2. reverse()

   Array.prototype.reverse = function() {
     var array = this.concat();    
     for(var i = 0; i<this.length; i++){
        this[i] = array.pop();      
     }; 
     return this;
   };
   console.log([1,2,3].reverse());
   

3. reverse()

   Array.prototype.reverse = function() {
       for (var i=0; i<this.length/2; i++) {
           var temp = this[i];
           this[i] = this[this.length-1-i];
           this[this.length-1-i] = temp;
       return this;
   };
   console.log([1,2,3,4].reverse());
   ...
   

4. reverse()

   Array.prototype.reverse = function() {
       var array = [];
       var length = this.length;
       for (var i = length - 1; i >= 0; i--){
           array.push(this[i])
       };
       for ( var i = 0; i < length; i ++){
           this[i] = array[i];
       return this;
   };
   

5. reverse()

   Array.prototype.reverse = function() {
       for (i=0, j= this.length-1; i<j; i++, j--){
           var tmp = this[i];
           this[i]=this[j];
           this[j]=tmp;
       return this;
   };
   

6. reverse()

   Array.prototype.reverse = function () {
     var counter, 
       temp, 
       index;
     counter = this.length;
       while (counter > 0) {
           index = Math.floor(Math.random() * counter);
           counter--;
           temp = array[counter];
   ...
   

7. reverse()

   Array.prototype.reverse = function () {
     var counter, 
       temp, 
       index;
     counter = this.length;
       while (counter > 0) {
           index = Math.floor(Math.random() * counter);
           counter--;
           temp = this[counter];
   ...
   

8. reverse()

   Array.prototype.reverse = function () {
     var counter, 
       temp, 
       index;
     counter = this.length;
       while (counter > 0) {
           index = Math.floor(Math.random() * counter);
           counter--;
           temp = array[counter];
   ...
   

9. reverse()

   Array.prototype.reverse = function () {
       for (var i = 0, j = this.length - 1; i < j; i++, j--) {
           var tmp = this[i];
           this[i] = this[j];
           this[j] = tmp;
       return this;
   };