Snippets for CodeWars

test.js

// Arrays
Array.prototype.square  = function () { return this.map(function(n) { return n*n; }); }
Array.prototype.cube    = function () { return this.map(function(n) { return n*n*n; }); }
Array.prototype.average = function () { return this.sum() / this.length; }
Array.prototype.sum     = function () { return this.reduce(function(a, b) { return a + b; }, 0); }
Array.prototype.even    = function () { return this.filter(function(item) { return 0 == item % 2; }); }
Array.prototype.odd     = function () { return this.filter(function(item) { return 0 != item % 2; }); }
Array.prototype.max     = function () { return Math.max.apply(null, this); }
Array.prototype.min     = function () { return Math.min.apply(null, this); }
//Arguments to array
var array = Array.prototype.slice.call(arguments, 0);