8 puzzle game.3*3的矩阵里随机分布，现每次只能移动一个数字最后要求1-8要按从上到下从左到右的顺序依次排列。-8 puzzle game.3* 3 matrix of randomly distributed inside, now you can only move one digit 1-8 final requirements according to the order　top to bottom left to right order.