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这题的关键在于，题目中的置换不一定是字母左移右移的置换，可能是随机的一种置换。抓住一点，置换后同一种字母对应到另一种字母后个数是不变的，所是只要把两组字符串对应的每一种字母个数求出，然后排序，一一比较。 Followed by: Post your reply here: |
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