八数码 * 大体思路：主要思想为插入排序。

* 特殊词语解释：

* 墙：在最外层的中间位置，总共有四个，如[1][0]。

* 注意：这四个位置有一个共同性质，即：以任何方式记录数字为，他们与其他五个位置的奇偶性互异

* 角：数组的四个角

* 空格：数字0-Eight digital* generally thought: the main ideas for the insertion sort.* Special terms to explain:* the wall: In the middle of the outermost layer, a total of four, such as [1] [0].* Note: These four locations have a common nature, namely: the number of records in any way for them with five other locations parity differ* angle: the four corners of the array* space: Digital 0