var springX:Number=0;
var springY:Number=0;
var spring:Number=.95;
var radius:Number=300;

ball.addEventListener(Event.ENTER_FRAME, Event_ENTER_FRAME);
ball.x=ball.y=Math.random()*300;
stage.addEventListener(MouseEvent.MOUSE_DOWN, onClick);

function onClick(event:Event):void {
	ball.x=mouseX;
	ball.y=mouseY;
}

function Event_ENTER_FRAME(event:Event):void {
	var ax:Number=0;
	var ay:Number=0;
	ball.x+= (springX += ((radius - (2 * ball.x)) * .1));
	ball.y+= (springY += ((radius - (2 * ball.y)) * .1))
	springX*=spring;
	springY*=spring;
}

The below code shows how to use the class

import druva.NumberUtil;

trace('500', NumberUtil.getParity(500));
// true
trace('489', NumberUtil.getParity(489));
// false
trace('5', NumberUtil.getParity(5));
//false
trace('1', NumberUtil.getParity(1));
//true
trace('400', NumberUtil.getParity(400));
//false

This is the actual class

package druva {
  import flash.display.Sprite;

  public class NumberUtil extends Sprite{
    public function NumberUtil(){
    }

    public static function getParity(num:Number):String {
		return (num % 2) ? 'odd' : 'even';
	}

  }
}

The below code shows how to use the class

import druva.NumberUtil;
trace(NumberUtil.isBetween(5, 10,100));
// 10

trace(NumberUtil.isBetween(5, 10,100, 50));
// 50

This is the actual class for validation

package druva{
	import flash.display.Sprite;

	public class NumberUtil extends Sprite {
		public function NumberUtil() {
		}

		public static function isBetween(number:Number, min:Number, max:Number, def:Number=0):Number {
				return ((number >= min ) && (number <= max )) ? number : ((def == 0) ? min : def);
		}

	}
}

The below code shows how to use the class

import druva.NumberUtil;

trace('500 ', NumberUtil.formatterC3(987654321));
// 987,654,321
trace('489 ',NumberUtil.formatterC3(123456789));
// 123,456,789
trace('5 > ',NumberUtil.formatterC3(111222333));
// 111,222,333
trace('1 > ',NumberUtil.formatterC3(556677));
// 556, 677

This is the actual class for validation

package druva{
	import flash.display.Sprite;

	public class NumberUtil extends Sprite {
		public function NumberUtil() {
		}

		public static function formatterC3(number:Number):String {
			//C3 - comma for 3 digits
			var numS:String=String(number);
			if (numS.length>3) {
				var n:Number=numS.length%3;
				var output:String=numS.substr(0,n);
				for (var i:Number = n; i<numS.length; i += 3) {
					output += ((n == 0 && i == 0) ? "" : ",")+numS.substr(i, 3);
				}
				return output;
			}
			return numS;
		}

	}
}

Check is Not a Number and set Default

This is the sample script to show how to use the class

import druva.NumberUtil;

trace(NumberUtil.toNumber('5889sfd', 5))// 5

trace(NumberUtil.toNumber('60', 5))// 60

trace(NumberUtil.toNumber(55, 5))// 55

Actual Class to calculate average of numbers in array

package druva{
	import flash.display.Sprite;

	public class NumberUtil extends Sprite {
		public function NumberUtil() {
		}

		public static function toNumber(value:*, def:Number):Number {
			return (isNaN(Number(value))==true) ? def : Number(value);
		}

	}
}