Nodejs Array Unique uniq()

Here you can find the source of uniq()

Method Source Code

Array.prototype.uniq = function() {
  var uniqArray = [];
  for (var i = 0; i < this.length; i++) {
    if (uniqArray.indexOf(this[i]) === -1) {
      uniqArray.push(this[i]);//from  ww  w.  j  a  va  2s  .co m
    }
  }
  return uniqArray;
};

Related

  1. uniq()
    Array.prototype.uniq = function (){
      let result = [];
      for (let i = 0; i < this.length; i++) {
        if (result.includes(this[i])) {
          continue;
        } else {
          result.push(this[i]);
      return result;
    };
    console.log([1, 2, 1, 3, 3].uniq());
    console.log([1, 2, 3, 4].uniq());
    
  2. uniq()
    var bubbleSort = function (array)
      var sorted = false;
      while (!sorted)
        sorted = true;
        for (i = 0; i < array.length - 1; i++)
          if (array[i] > array[i + 1])
    ...
    
  3. uniq()
    Array.prototype.uniq = function() {
      let i;
      let uniqArr = [];
      for (i = 0; i < this.length; i++) {
        if (!uniqArr.includes(this[i])) {
          uniqArr.push(this[i]);
      return uniqArr;
    ...
    
  4. uniq()
    function uniq(array) {
      let newArray = [];
      for (let i = 0; i < array.length; i++) {
        if (!newArray.includes(array[i])) {
          newArray.push(array[i]);
      return newArray;
    Array.prototype.uniq = function () {
      let newArray = [];
      for (let i = 0; i < this.length; i++) {
        if (!newArray.includes(this[i])) {
          newArray.push(this[i]);
      return newArray;
    };
    Array.prototype.twoSum = function () {
      let positions = [];
      for (let i = 0; i < this.length; i++) {
        for (let j = i + 1; j < this.length; j++) {
          if (this[i] + this[j] === 0) {
            positions.push([i, j]);
      return positions;
    };
    function myTranspose (array) {
      let transposed = [];
      for (let i = 0; i < array.length; i++) {
        let row = [];
        for (let j = 0; j < array.length; j++) {
          row.push(array[j][i]);
        transposed.push(row);
      return transposed;
    console.log(myTranspose([
        [0, 1, 2],
        [3, 4, 5],
        [6, 7, 8]
      ]));
    
  5. uniq()
    function uniq(array) {
      const beenSeen = [];
      for (let i = 0; i < array.length; i++) {
        if (!(beenSeen.includes(array[i]))) {
          beenSeen.push(array[i]);
      return beenSeen;
    Array.prototype.uniq = function() {
      const beenSeen = [];
      for (let i = 0; i < this.length; i++) {
        if (!(beenSeen.includes(this[i]))) {
          beenSeen.push(this[i]);
      return beenSeen;
    };
    Array.prototype.two_sum = function() {
      const twoSum = [];
      for (let i = 0; i < this.length - 1 ; i++) {
        for (let j = i + 1; j < this.length; j++) {
          if (this[i] + this[j] === 0) {
            twoSum.push([i , j]);
      return twoSum;
    };
    function myTranspose(matrix) {
      const outLength = matrix[0].length;
      const outWidth = matrix.length;
      const outArray = [];
      for (let i = 0; i < outLength; i++) {
        const row = [];
        for (let j = 0; j < outWidth; j++) {
          row.push(matrix[j][i]);
        outArray.push(row);
      return outArray;
    console.log(myTranspose([
        [0, 1, 2],
        [3, 4, 5],
        [6, 7, 8]
      ]));
    
  6. unique
    Array.prototype.unique =
      function() {
        var a = [];
        var l = this.length;
        for(var i=0; i<l; i++) {
          for(var j=i+1; j<l; j++) {
            if (this[i] === this[j])
              j = ++i;
          a.push(this[i]);
        return a;
      };
    
  7. unique
    Array.prototype.unique =
      function() {
        var a = [];
        var l = this.length;
        for(var i=0; i<l; i++) {
          for(var j=i+1; j<l; j++) {
            if (this[i] === this[j])
              j = ++i;
          a.push(this[i]);
        return a;
      };
      Array.prototype.clean = function(deleteValue) {
        for (var i = 0; i < this.length; i++) {
          if (this[i] == deleteValue) {         
            this.splice(i, 1);
            i--;
        return this;
      };  
    String.prototype.contains = function(it) { return this.indexOf(it) != -1; };
    
  8. unique
    Array.prototype.unique =
      function() {
        var a = [];
        var l = this.length;
        for(var i=0; i<l; i++) {
          for(var j=i+1; j<l; j++) {
            if (this[i] === this[j])
              j = ++i;
          a.push(this[i]);
        return a;
      };
    Date.prototype.today = function () {
        return ((this.getDate() < 10)?"0":"") + this.getDate() +"."+(((this.getMonth()+1) < 10)?"0":"") + (this.getMonth()+1) +"."+ this.getFullYear();
    Date.prototype.timeNow = function () {
         return ((this.getHours() < 10)?"0":"") + this.getHours() +":"+ ((this.getMinutes() < 10)?"0":"") + this.getMinutes() +":"+ ((this.getSeconds() < 10)?"0":"") + this.getSeconds();
    
  9. unique()
    Array.prototype.unique = function() {
        return [... new Set(this)]