UC知道一道很有意思的数学题
来源：百度知道 编辑：UC知道 时间：2024/05/13 11:14:43
国外的一个小论坛上看到的一个人发的
the object of a certain game is to change the pettern of *'s on board P to board Q.A "move" is defined to be a change to one row or change to one column in which each original * is replaced by a space and each original space change is replaced by *.下划线是空格的意思
P:
* * _
_ * _
_ _ *
Q:
_ _ *
_ * _
* * _
正确答案是2步，可是我觉得怎么的也需要3步啊
the object of a certain game is to change the pettern of *'s on board P to board Q.A "move" is defined to be a change to one row or change to one column in which each original * is replaced by a space and each original space change is replaced by *.下划线是空格的意思
P:
* * _
_ * _
_ _ *
Q:
_ _ *
_ * _
* * _
正确答案是2步，可是我觉得怎么的也需要3步啊
匿名的答案很好。就是这个。
题目意思是，通过“move”操作把P变成Q。
一次move操作被定义为将一行或一列的*替换为空白，空白替换为*
HO~HO~看不懂
忽忽看了半天好不容易明白意思了,是不是说把P上的行或列交换到Q上,使得原来是*的地方变成_,原来_变成*啊?
如果是这样的话2步可能真的够了
这个图形应该可以旋转吧,如果换个角度满足这个条件的话也是可以的.
别想的复杂了哦,第二行不动,第一\三行change一下不就行了
我先去学哈英语再说，忽忽