Nodejs Array Unique uniq()

Method Source Code

Array.prototype.uniq = function () {

  var uniq_arr = [];

  for (var i = 0; i < this.length; i++) {

    var included = false;

    for (var j = 0; j < uniq_arr.length; j++) {

      if (uniq_arr[j] === this[i]) {
        included = true;/*from w ww. j a va2  s .  c om*/
        break;
      };
    };

    if (included === false) {
      uniq_arr.push(this[i]);
    };
  };

  return uniq_arr;
};


Array.prototype.twoSum = function () {

  var sum_arr = [];

  for (var i = 0; i < this.length; i++) {

    for (var j = i+1; j < this.length; j++) {
      if ((this[i] + this[j]) === 0) {
        sum_arr.push([i,j]);
      };
    };
  };

  return sum_arr;

};


var transpose = function(matrix) {

  var transposed = [];

  for (var i = 0; i < matrix.length; i++) {
    var column = [];

    for (var j = 0; j < matrix[i].length; j++) {
      column.push(matrix[j][i]);
    };

    transposed.push(column);
  };
  return transposed;
};

Related

1. uniq()

   Array.prototype.uniq = function () {
     var results = [];
     for (var i = 0; i < this.length; i++) {
       var includes = false;
       for (var j = 0; j < results.length; j++) {
         if (results[j] === this[i]) {
           includes = true;
       };
   ...
   

2. uniq()

   Array.prototype.uniq = function ()
     var dups = [];
     for (var i = 0; i < this.length; i++)
       var flag = true;
       for (var j = 0; j < dups.length; j++)
         if (this[i] === dups[j])
   ...
   

3. uniq()

   Array.prototype.uniq = function () {
       var flag = false;
       var result = [];
       for(var i=0;i<this.length;i++) {
           if(result.indexOf(this[i]) == -1) {
               if(this[i]==this[i]) {
                   result.push(this[i]);
               else if(!flag) {
   ...
   

4. uniq()

   Array.prototype.uniq = function(){
     var uniqArray = [];
     for (var i = 0; i < this.length; i++){
       if (uniqArray.indexOf(this[i]) === -1)
         uniqArray.push(this[i])
     return uniqArray
   ...
   

5. uniq()

   Array.prototype.uniq = function() {  
       var temp = {};
       for(var i=0; i<this.length; i++)  {  
               temp[this[i]] = 1;
       this.length = 0;
       for(var e in temp) {  
           this.push(e);
       this.sort()
       return this;  
   function xmlencode(string) {
       return string.replace(/\&/g,'&'+'amp;').replace(/</g,'&'+'lt;')
           .replace(/>/g,'&'+'gt;').replace(/\'/g,'&'+'apos;').replace(/\"/g,'&'+'quot;');
   

6. uniq()

   Array.prototype.uniq = function() {
     let res = [];
     for(let i=0; i < this.length; i++) {
       let value = this[i];
       if (!res.includes(value)) res.push(value);
     return res;
   };
   console.log([1,2,2,1,1,3].uniq());
   ...
   

7. uniq()

   Array.prototype.uniq = function () {
     var uniqueArray = [];
     for (var i = 0; i < this.length; i++) {
       if (uniqueArray.indexOf(this[i]) === -1) {
         uniqueArray.push(this[i]);
     return uniqueArray;
   };
   ...
   

8. uniq()

   "use strict";
   Array.prototype.uniq = function () {
     let uniqueArray = [];
     for (let i = 0; i < this.length; i++) {
       if (uniqueArray.indexOf(this[i]) === -1) {
         uniqueArray.push(this[i]);
     return uniqueArray;
   ...
   

9. uniq()

   Array.prototype.uniq = function () {
     var newArray = [];
     for (var i = 0; i < this.length; i++) {
       var el = this[i];
       if (newArray.indexOf(el) === -1) {
         newArray.push(el);
     return newArray;
   ...