请编写一个程序,给数独中的剩余的空格填写上数字
空格用字符'.'表示
假设给定的数独只有唯一的解法
这盘数独的解法是:
红色表示填上的解
[[.,.,9,7,4,8,.,.,.],[7,.,.,.,.,.,.,.,.],[.,2,.,1,.,9,.,.,.],[.,.,7,.,.,.,2,4,.],[.,6,4,.,1,.,5,9,.],[.,9,8,.,.,.,3,.,.],[.,.,.,8,.,3,.,2,.],[.,.,.,.,.,.,.,.,6],[.,.,.,2,7,5,9,.,.]]
[[5,1,9,7,4,8,6,3,2],[7,8,3,6,5,2,4,1,9],[4,2,6,1,3,9,8,7,5],[3,5,7,9,8,6,2,4,1],[2,6,4,3,1,7,5,9,8],[1,9,8,5,2,4,3,6,7],[9,7,5,8,6,3,1,2,4],[8,3,2,4,9,1,7,5,6],[6,4,1,2,7,5,9,8,3]]
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