皇后问题是经典的回溯算法问题，本文使用BIT位运算对非递归的回溯算法进行优化，取得了较好的效果,对其他类似问题的算法的优化有一定指导意义-Queens problem is a the classic backtracking algorithm, BIT bit computing to optimize non-recursive backtracking algorithm, and achieved good results, the optimization algorithm to other similar problems have certain guiding significance