concat กับ push

public function generatePush(event:MouseEvent):void {
	var average:Number = 0
	var total:int = 10000
	var na:Array = new Array()
	var samplingArray:Array = [new SampleStructure("mr.bun", "021587623"), new SampleStructure("ms.rally", "0359234752"), new SampleStructure("mrs.blick", "0852093428"), new SampleStructure("mr.geouge", "0348543235"), new SampleStructure("ms.lulu", "0912438534")]
 
	var sumStart:int = getTimer()
	for (var i:int = 0; i < total; i++) {
		var start:int = getTimer()
		for each (var o:* in samplingArray) {
			na.push(o)
		}
		var stop:int = getTimer()
		average += (stop-start)
	}
 
	var sumStop:int = getTimer()
	trace("na size: " + na.length) 
	trace("total usage: " + (sumStop - sumStart))
	trace("average usage: " + (average / total))
}
 
public function generateConcat(event:MouseEvent):void {
	var average:Number = 0
	var total:int = 10000
	var na:Array = new Array()
	var samplingArray:Array = [new SampleStructure("mr.bun", "021587623"), new SampleStructure("ms.rally", "0359234752"), new SampleStructure("mrs.blick", "0852093428"), new SampleStructure("mr.geouge", "0348543235"), new SampleStructure("ms.lulu", "0912438534")]
 
	var sumStart:int = getTimer()
	for (var i:int = 0; i < total; i++) {
		var start:int = getTimer()
		na = na.concat(samplingArray)
		var stop:int = getTimer()
		average += (stop-start)
	}
 
	var sumStop:int = getTimer()
	trace("na size: " + na.length)
	trace("total usage: " + (sumStop - sumStart))
	trace("average usage: " + (average / total))
}