Project Euler 4

/**
 * Copyright potix2 ( http://wonderfl.net/user/potix2 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/g613
 */

// forked from potix2's Project Euler 3
// forked from potix2's PE002
// forked from potix2's PE001
//@see http://projecteuler.net/index.php?section=problems&id=4
package {
    import flash.display.Sprite;
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;
    import flash.events.Event;
    
    public class Euler extends Sprite {
        private function main():void {
        		var v:Vector.<int> = new Vector.<int>();
        		for ( var i:int = 100; i < 1000; i++ ) {
        			for ( var j:int = 100; j < 1000; j++ ) {
        				v.push(i * j);
        			}
        		}
        		v = v.sort(function(a:int, b:int):int {
        			return b - a;
        		});
        		dumpVector(v.filter(function(item:int, index:int, v:Vector.<int>):Boolean {
        			return isPalindrome('' + item);
        		}, this));
        }
        
        private function isPalindrome(s:String):Boolean {
        		//一番うえの桁と一番したの桁を比較し、一致しない場合は終了
        		if ( s.length < 1 ) {
        			return true;
        		}
        		else {
        			var top:String = s.substr(0, 1);
        			var last:String = s.substr(s.length - 1, 1);
        			if ( top == last ) {
        				return isPalindrome(s.substr(1, s.length - 2));
        			}
        			else {
        				return false;
        			}
        		}
        }
        
        // setup
    		private var _console:TextField;
        public function Euler() {
        		addEventListener(Event.ADDED_TO_STAGE, init);
        }
        
        private function init(event:Event):void {
        	    	_console = new TextField();
        	    	_console.multiline = true;
        	    	_console.selectable = true;
        	    	_console.autoSize = TextFieldAutoSize.LEFT;
        		addChild(_console);
        		main();
        }
         
        private function log(msg:String):void {
        		_console.appendText("\n" + msg);
        }
        
        private function dumpVector(v:Vector.<int>):void {
        		v.forEach(function (item:int, index:uint, vect:Vector.<int>):void {
        			this.log(item);
        		}, this);       	
        }
        
    }
}
class VectorUtil {
	public static function range(min:int, max:int):Vector.<int> {
		var ret:Vector.<int> = new Vector.<int>(max - min + 1);
		var i:int = 0;
		while(i + min <= max ) {
			ret[i] = min + i;
			i++;
		}
		return ret;
	}
}