用A*算法求解八数码问题。A*算法又叫做最佳图搜索算法，是满足启发函数不大于实际耗散值的A算法，可以用理论证明如果最佳解图存在的话，一定可以用A*算法找出来。-with A* algorithm eight digital problem. A* algorithm also called the plan the best search algorithm, it is instructive function to meet not more than the actual value of