Project Euler 135

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

package {
    import flash.display.Sprite;
    import flash.text.TextField;
    import flash.utils.getTimer;
    import mx.utils.*;
    // @see http://projecteuler.net/index.php?section=problems&id=135
    public class Euler135 extends Sprite {
        private var _tf : TextField;
  
        public function Euler135() {
            _tf = new TextField();
            _tf.width = 465;
            _tf.height = 465;
            addChild(_tf);
            
            var s : int = getTimer();
            _tf.appendText("" + solve(1000000) + "\n");
            var g : int = getTimer();
            _tf.appendText("" + (g - s) + " ms\n");
        }
        
        private function solve(N : int) : int
        {
            var ct : Object = {};
            for(var u : int = 1;u < N;u++){
                for(var v : int = 4 - (u & 3);3 * u > v && u * v < N;v += 4){
                    var val : int = u * v;
                    if(!ct[val])ct[val] = 0;
                    ct[val]++;
                }
            }
            
//            _tf.appendText("" + ObjectUtil.toString(ct) + "\n");
            var c : int = 0;
            for(var key : String in ct){
                if(ct[key] == 10){
                    c++;
//                    _tf.appendText(key + "\n");
                }
            }
            return c;
        }
    }
}