Nodejs Array to Twenty Convert toTwenty()

Method Source Code

Array.prototype.toTwenty = function() {
  for(let i=1; i<=20; i++) {
    this.push(i);// w ww  .  j a va 2s  .co m
  }
  return this;
}

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

Array.prototype.toOneThousand = function() {
  for(let i=10; i<=1000; i+=10) {
    this.push(i);
  }
  return this;
}

Array.prototype.search = function(num) {
  let count = 0;
  let startIndex = 0;
  let endIndex = this.length-1;

  while(startIndex <= endIndex){
    if (this[startIndex]===num) {
      return {count: count, index:startIndex, length: this.length}
    }
    if(this[endIndex]===num) {
      return {count: count, index:endIndex, length: this.length}
    }
    let midPoint = Math.floor((startIndex+endIndex)/2);
    if (this[midPoint] === num) {
      return {count: count, index: midPoint, length: this.length};
    }
    else if (this[midPoint] > num) {
      endIndex = midPoint-1;
      startIndex+=1;
    }
    else {
      startIndex = midPoint+1;
      endIndex-=1;
    }
    count+=1;
  }
  return {count: count, index: -1, length: this.length};
}

Related

1. toTwenty()

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

2. 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() {
   ...
   

3. 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);
   ...
   

4. 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 = [];
   ...
   

5. 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 = [];
   ...
   

6. toTwenty()

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

7. 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);
   ...
   

8. 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){
   ...
   

9. 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=[];
   ...