AS3随机序列码生成

import flash.events.MouseEvent;

var char:Array = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z",
				  "A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"];
				  
trace(char.length);

stage.addEventListener(MouseEvent.CLICK, shengcheng);

function shengcheng(e){
	var code:String = "";
	for(var i:int=0; i<20; i++){
		var index:int = int(Math.random() * char.length);
		code = code + char[index];
	}
	trace(code);
}

//输出结果

gICppAfWNqniKyxOYXdN
nmgbnASvnhxGbISWdOxP
iyKjsvbMfCOazMCYvDnT
HNzPfQRIUuYXGmYKQFen
EberKmtHhEFsCQaUhOeM
xnJwXvLfsISppjTlwdLb
fbmtgUNpTpHcOBzbVfPT
YAVWjiIFfZNCOajewvnF
eIkQNNKwuNMJuiMbIoIi
LsNzcTlBSzcRdGPmSGcr