Created
February 22, 2016 16:14
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| /* | |
| This code does the following: | |
| 1 - Start a new population of 50 "numbers" and a GOAL of 9999 | |
| 2 - Select the two highest multiple of 3 available | |
| 3 - Create a new generation of numbers ranging between it's parents values, incresing a little | |
| 4 - Do that until reaches the GOAL | |
| */ | |
| var GOAL = 9999; | |
| var SIZE = 50; | |
| var MULTIPLE_OF = 3; | |
| var INCREASE = MULTIPLE_OF; | |
| function getRandom(minNum, maxNum) { | |
| if (minNum == null) { | |
| minNum = 0; | |
| } | |
| if (maxNum == null) { | |
| throw new Error('getRandom was called without a maxNum'); | |
| } | |
| return Math.floor(Math.random() * (maxNum - minNum)) + minNum; | |
| } | |
| function selectCouple(members) { | |
| var sorted = members.filter(function (member) { | |
| return member % MULTIPLE_OF === 0; | |
| }).sort(); | |
| if (!sorted || sorted.length < 2) { | |
| throw new Error('Extinction!') | |
| } | |
| return [sorted[sorted.length - 2], sorted[sorted.length - 1]]; | |
| } | |
| function Pop () { | |
| var member; | |
| this.members = []; | |
| console.log('Starting Population with these members:'); | |
| for (var i = 0; i < SIZE; i++) { | |
| member = getRandom(null, GOAL); | |
| this.members.push(member); | |
| console.log(' - ' + member); | |
| } | |
| } | |
| Pop.prototype.isDone = function (last) { | |
| this.rounds = this.rounds || 1; | |
| console.log('Round ' + this.rounds); | |
| if (last >= GOAL) { | |
| console.log('=========') | |
| console.log('Done! In ' + this.rounds + ' rounds'); | |
| return true; | |
| } | |
| this.rounds++; | |
| return false; | |
| } | |
| Pop.prototype.generate = function () { | |
| var selectedMembers = selectCouple(this.members); | |
| var first = selectedMembers[0]; | |
| var last = selectedMembers[1]; | |
| if (first === last) { | |
| last = last + INCREASE; | |
| } | |
| if (this.isDone(last)) { | |
| return; | |
| } | |
| var member; | |
| this.members = []; | |
| console.log('New generation for [' + first.toString() + ', ' + last.toString() + ']'); | |
| for (var i = 0; i < SIZE; i++) { | |
| member = getRandom(first, last + INCREASE); | |
| this.members.push(member); | |
| console.log(' - ' + member); | |
| } | |
| this.generate(); | |
| } | |
| var pop = new Pop(); | |
| pop.generate(); |
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