spiral order

    static public function spiralOrder(matrix:Array):Array
        {

            var arr:Array = [];

            var stopLevel:int = Math.ceil(matrix.length / 2);

            for (var level:int = 0; level < stopLevel; level++)
            {

                var start:int = level;
                var end:int = matrix[0].length - level;

                var endLevel:int = matrix.length - level;

                //  top
                for (var i:int = start; i < end; i++)
                {
                    arr.push({h: level, v: i});
                }

                // right
                for (var j:int = level + 1; j < endLevel; j++)
                {
                    arr.push({h: j, v: end - 1});
                }

                // bottom
                for (var k:int = end - 2; k > start; k--)
                {
                    arr.push({h: endLevel - 1, v: k});
                }

                // left
                for (var l:int = endLevel - 1; l > level; l--)
                {
                    arr.push({h: l, v: start});
                }

            }

            return arr;

        }