用JAVA编写的N后问题~可以自由设置皇后个数，目前设置皇后上限为13，更改程序中STRING字符串的大小后可计算更多皇后的问题，有图形化界面显示解的位置~界面很可爱好看的哦~　-JAVA prepared with N, after the issue of ~ can freely set the number of Queen s, Queen s currently set a maximum of 13, to change the program the size of the st