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注意这句Substitutes for all letters must be different. For some letters substitute letter may coincide with the original letter. 说明替换的方法是不同的。不一定按题目的替换方法,只要被替换字母与替换字母是唯一的映射就可以了。 具体解法是: 分别对两个串的中各个字母的个数统计好后,分别放在a,b中,再排序一下。只要两个a,b两个数组完全一样就可以了。(a,b大小是26,刚好26个字母) Followed by:
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