求魔方的变法

2025-02-09 14:24:10
推荐回答(2个)
回答1:

二阶魔方的总变化数为 3,674,160 或者大约 3.67×106

三阶魔方,也就是普通魔方,别看魔方只有26个小块,相对位置能变化的更只有20块,可是它的变化真不少,曾经有公司在卖魔方时做广告说魔方总变化有30亿种,有人评论说,这相当于麦当劳得意的宣布他们已经在全世界卖出了100个汉堡包了。魔方的变化有(8!*3^8*12!*2^12)/(3*2*2)=43,252,003,274,489,856,000,约等于4.3*10^19或者4325亿亿种变化,三阶魔方总变化数的道理是这样:8个角色块全排列8!,而每个角色块又有3种朝向,所以是8!*3^8,12个棱色块全排列每个有2种朝向是12!*2^12,这样相乘就是分子,而分母上3*2*2的意义是,保持其他色块不动,不可以单独改变一个角色块朝向,改变一个棱色块朝向,和单独交换一对色块的位置。
如果你一秒可以转3下魔方,不计重复,你也需要转4542亿年,才可以转出魔方所有的变化,这个数字是目前估算宇宙年龄的大约30倍。普通魔方的玩法它需要你记忆60个以上的算法,据我经验, 如果你不每天玩魔方的话,算法遗忘的速度挺快的。魔方虽然只有6面、6种颜色,但是却能变幻出的状态多得让人难以置信。

四阶魔方被认为是2-5阶魔方中最不好复原的,虽然5阶魔方的变化种类比4阶多,但是4阶魔方不存在中心块,也就不能用一般的方法进行复原。

五阶魔方的总变化状态数为:282,870,942,277,741,856,536,180,333,107,150,328,293,127,731,985,672,134,721,536,000,000,000,000,000 种变化。

回答2:

http://www.mf100.org/这个网站不错.

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