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Re:请解释一下什么是"the distance between the positions of every letter in S and the copy"

Posted by windy7926778 at 2009-04-05 13:29:32 on Problem 3726
In Reply To:请解释一下什么是"the distance between the positions of every letter in S and the copy" Posted by:gnocuil at 2009-04-05 13:12:33
S经过排列成为copy,S中的每个字母在copy均出现,每个字母在S中的位置(下标)和在copy中的位置(下标)之差的绝对值,称为该字母的距离

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