package { import flash.display.*; import flash.text.*; public class Shuffle extends Sprite { private var textfield:TextField; function Shuffle() { var i:int, array:Array, text:String = ""; text += "Array.sort(function():int{return int(Math.random()*3)-1});\nで、配列をシャッフルできる。\n\n"; text += "◆シャッフルのテスト\n"; array = new Array(); for(i = 1; i <= 16; i++) {array.push(i);} text += "array = ["+array+"]\n\n"; text += shuffle(array)+"\n"; text += shuffle(array)+"\n"; text += shuffle(array)+"\n"; text += shuffle(array)+"\n"; text += shuffle(array)+"\n"; text += "\n◆分布のテスト\n"; array = new Array(); for(i = 1; i <= 3; i++) {array.push(i);} text += "array = ["+array+"]\n\n"; var result:Object = {"1,2,3":0,"1,3,2":0,"2,1,3":0,"2,3,1":0,"3,1,2":0,"3,2,1":0}; for(i = 0; i < 65536; i++) {result[shuffle(array)]++;} for(var str:String in result) {text += "["+str+"] = "+result[str]+"\n";} textfield = new TextField(); textfield.x = textfield.y = 20; textfield.width = textfield.height = 400; textfield.text = text; addChild(textfield); } public function shuffle(array:Array):Array { return array.sort(function():int{return int(Math.random()*3)-1}); } } }