八皇后问题。N皇后。对角线同行同列不能放棋子-Eight queens problem

八皇后问题是求出在一个n×n的棋盘上，放置n个不能互相捕捉的国际象棋“皇后”的所有布局（皇后可以沿着纵横和两条斜线4个方向相互捕捉）的问题。是一种比较常见的练习C语言递归或者栈使用的程序问题。-Eight queens problem is to find an nn chessboard, place of n are not mutually capture chess " queen" of all the layout (Queens and two along the

Implement N Queen’s problem using Back Tracking.