Nodejs Array to Twenty Convert toTwenty()

Method Source Code

Array.prototype.toTwenty = function() {
  var newArray = [];

  for (var i = 1; i <= 20; i++) {
    newArray.push(i);//from  w  w w.  j  av a 2 s.  co m
  }

  return newArray;
}

Array.prototype.toForty = function() {
  var newArray = [];

  for (var i = 2; i <= 40; i += 2) {
    newArray.push(i);
  }

  return newArray;
}

Array.prototype.toOneThousand = function() {
  var newArray = [];

  for (var i = 10; i <= 1000; i += 10) {
    newArray.push(i);
  }

  return newArray;
}

Array.prototype.search = function(num) {
  var index = -1;
  var startIndex = 0;
  var stopIndex = this.length - 1;
  var middle;
  var count = 0;

  while(startIndex < stopIndex) {
    middle = Math.floor((startIndex + stopIndex) / 2);

    if (this[startIndex] === num) {
      index = startIndex;
      break;
    } else if (this[stopIndex] === num) {
      index = stopIndex;
      break;
    } else if (this[middle] < num) {
      startIndex = middle + 1;
    } else if (this[middle] > num) {
      stopIndex = middle - 1;
    } else {
      index = middle;
      break;
    }

    count++;
  }
    return {"count": count, "index": index, "length": this.length};
}

Related

1. toTwenty()

   'use strict';
   Array.prototype.toTwenty = function() {
     let arr = [];
     for (var i = 1; i <= 20; i++) {
       arr.push(i);
     return arr;
   Array.prototype.toForty = function() {
   ...
   

2. toTwenty()

   Array.prototype.toTwenty = function(){
     for(var loop =1; loop<=20;loop++){
       this.push(loop);
     return this;
   };
   Array.prototype.toForty = function(){
     for(var loop = 1;loop<=20;loop++){
       this.push(loop*2);
   ...
   

3. toTwenty()

   Array.prototype.toTwenty = function() {
       var arr = [];
       for (i = 0; i < 20; i++) {
           arr.push(i+1);
       return arr;
   Array.prototype.toForty = function() {
       var arr = [];
   ...
   

4. toTwenty()

   Array.prototype.toTwenty = function(){
     var twenty = [];
     for ( var i = 1; i <= 20; i++){
       twenty.push(i)
         return twenty
   Array.prototype.toForty = function() {
     var forty = [];
   ...
   

5. toTwenty()

   Array.prototype.toTwenty = function() {
     for(let i=1; i<=20; i++) {
       this.push(i);
     return this;
   Array.prototype.toForty = function() {
     for(let i=2; i<=40; i+=2) {
       this.push(i);
   ...
   

6. toTwenty()

   Array.prototype.toTwenty = function(){
     for(var loop =1; loop<=20;loop++){
       this.push(loop);
     return this;
   };
   Array.prototype.toForty = function(){
     for(var loop = 1;loop<=20;loop++){
       this.push(loop*2);
   ...
   

7. toTwenty()

   const binarySearch = function binarySearch (){
   Array.prototype.toTwenty = function () {
    for (var i = 1; i <= 20; i++){
      this.push(i);
    return this;
   };
   Array.prototype.toForty = function () {
    for (var i = 2; i <= 40; i+=2){
   ...
   

8. toTwenty()

   Array.prototype.toTwenty = function(){
    var answer=[];
      for (var i=1; i<=20; i++){
        answer.push(i)
      return answer;
   Array.prototype.toForty = function(){
     var answer=[];
   ...
   

9. toTwenty()

   Array.prototype.toTwenty = function(){
     var array = new Array();
     for(var i = 1; i <= 20; i++){
       array.push(i);
     return array;
   };
   Array.prototype.toForty = function(){
     var array = new Array();
   ...