Nodejs Array Chunk chunk(size)

Method Source Code

import Vue from 'vue';
// Prototypes//from  ww w.  j a v a2s.  c o  m
Array.prototype.chunk = function(size) {
    let sets = [],
        a = [...this],
        chunk = a.length / size;
    while (sets.length < chunk) {
        sets[sets.length] = a.splice(0, size);
    }

    return sets;
};

String.prototype.capitalize = function() {
    return this[0].toUpperCase() + this.slice(1);
};

String.prototype.reverse = function() {
    return this.split('').reverse().join('');
};

String.prototype.path = function(obj) {
    return this.split('.').reduce((o, i) => typeof o !== 'object' ? o : o[i], obj);
};

Related

1. chunck(num)

   function solution(array) {
       var numbers = [];
       var result = [];
       var chuncks;
       for (var i = 0; i < array.length; i++) {
           for (var j = 0; j < array.length; j++) {
               if (i != j) {
                   numbers.push(array[j]);
       chuncks = numbers.chunck(3);
       for (var k = 0; k < chuncks.length; k++) {
           var product = chuncks[k].reduce(function(a, b) {
               return a*b;
           });
           result.push(product);
       return result;
   Array.prototype.chunck = function(num) {
       var array = this;
       var result = [];
       for (var i = 0; i < array.length; i+=num) {
           result.push(array.slice(i,i+num));
       return result;
   };
   console.log(solution([1,2,3,4]));
   

2. chunk(chunkSize)

   Array.prototype.chunk = function(chunkSize) {
     var array = this;
     return [].concat.apply([],
       array.map(function(elem,i) {
           return i%chunkSize ? [] : [array.slice(i,i+chunkSize)];
       })
     );
   };
   

3. chunk(chunkSize)

   var fs = require('fs');
   var argv = require('argv');
   var _ = require('underscore');
   var arg = argv.run().targets;
   var num = parseInt(arg[0]);
   Array.prototype.chunk = function(chunkSize) {
     var results = [];
     for (var i=0; i<this.length; i+=chunkSize)
       results.push(this.slice(i,i+chunkSize));
   ...
   

4. chunk(n)

   Array.prototype.chunk(n) {
       var len = this.length,out = [], i = 0;
       while (i < len) {
           var size = Math.ceil((len - i) / n--);
           out.push(this.slice(i, i += size));
       return out;
   

5. chunk(size)

   Array.prototype.chunk = function(size) {
     var chunks = [];
     for (key = 0; key < this.length; key += size) {
       chunks.push(this.slice(key, key+size));
     return chunks;
   

6. chunks(chunks)

   Array.prototype.chunks = function(chunks) {
     'use strict';
     if (this.length === 0 || chunks === 1) {
       return this;
     var result = [];
     var itemsPerChunk = parseInt(this.length / chunks, null);
     if ((itemsPerChunk * chunks) < this.length) {
       itemsPerChunk++;
   ...