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不到 800 行代码,彻底搞定魔方还原问题

VC 可以编译运行,或者用 mingw 的 gcc 编译都可以

总共代码不到 800 行,还原速度在 10s 左右,当然还可以进一步优化。


一些符号的含义:
F - 正面,程序运行后白色的这一面
B - 背面,黄色面
L - 左面,紫色面(标准魔方应该是橙色,但是 windows 控制台无法显示橙色,用紫色替代)
R - 右面,红色面
U - 上面,蓝色面
D - 下面,绿色面


命令说明:

魔方操作命令:
f  - 正面顺时针旋转
f2 - 正面 180 度旋转
f' - 正面逆时针旋转

其他面以此类推:
f2 f' b b2 b' u u2 u' d d2 d' l l2 l' r r2 r'

init  - 魔方复位
rand  - 随机打乱魔方,可以直接 rand 或者 rand n,n 为随机打乱次数
input - 输入魔方状态,按照提示输入即可
solve - 自动还原魔方
help  - 帮助信息
exit  - 退出程序

所有命令都是用小写字母。



数据结构和算法说明:

数据结构方面,每个面都用简单的二维数组来表示。要点是六个面的旋转操作的实现,以及魔方状态的显示,和状态输入。

算法方面,主要是用到了启发式的广度优先搜索。要点在于魔方状态的评估函数,剪枝方法,搜索算法等。

当然,你还得懂魔方。


程序代码量不大,也写得足够精简,可仔细品味。如有不懂可以提问。


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