利用深度遍历的方法来检查8数码问题是否有解。-use depth traverse method to check whether the eight digital solutions to the problem.

Java实现八数码求解问题。输入一串字符数组代表八数码的初始位置，最后得到正确的八数码排布-Java Implementation eight digital solve this problem. Enter a character array of eight digital representative of the initial position, and finally get the correct arrangement of the eight digital