Nodejs Array Distinct distinct()

Method Source Code

Array.prototype.distinct = function(){
   for(var i = 0;i < this.length;i++){
      for(var j = i+1;j < this.length;){
         if(this[j] === this[i]){
         for(var k = j;k < this.length;k++){
            this[k] = this[k + 1];//from   w  w  w  .j ava2  s  . c  o  m
         }
            delete this[this.length - 1];
            this.length--;
            
         }else{
            j++;
         }
      }
   }
   return this;
};

Related

1. distinct()

   "use strict";
   Array.prototype.distinct = function () { 
     return Array.from(new Set(this)); 
   };
   

2. distinct()

   Array.prototype.distinct = function () {
     var d = {},
       i;
     this.push(d);
     while ((i = this.shift()) != d) {
       if (!d.hasOwnProperty(i)) {
         this.push(i);
         d[i] = 1;
     return this;
   };
   

3. distinct()

   Array.prototype.distinct = function() {
       var ret = [];
       for (var i = 0; i < this.length; i++) {
           for (var j = i + 1; j < this.length; ) {
               if (this[i] === this[j]) {
                   ret.push(this.splice(j, 1)[0]);
               } else {
                   j++;
       return ret;
   };
   console.log([1, 2, 3, 4, 4, "4", 5].distinct());
   

4. distinct()

   Array.prototype.distinct = function(){
     for(var i = 0; i< this.length; i++){
       var n = this[i];
       this.splice(i, 1);
       if(this.indexOf(n) < 0){
         this.splice(i,1,n);
     return this;
   ...
   

5. distinct()

   Array.prototype.distinct = function() {
       var hash = {};
       var a = [];
       for(var i = 0; i < this.length; i++) {
           if(hash.hasOwnProperty(this[i])) {
               continue;
           hash[this[i]] = true;
           a.push(this[i]);
   ...
   

6. distinct()

   Array.prototype.distinct = function () {
       var result = new Array();
       this.forEach(x => {
           if (!result.contains(x))
               result.push(x);
       });
       return result;
   };
   

7. distinct()

   Array.prototype.distinct = function(){
     var self = this
     var _array = []
     self.forEach(function(e){
       if(_array.contains(e)){
         _array.push(e)
     })
     return _array
   ...
   

8. distinct()

   Array.prototype.distinct = function () {
     var result = [];
     var hash = new Dictionary();
     forEach(this, function (element) {
       if (!hash.contains(element)) {
         result.push(element);
         hash.store(element, element);
     });
   ...