[LeetCode] Group Shifted Strings

249. Group Shifted Strings We can shift a string by shifting each of its letters to its successive letter. For example, “abc” can be shifted to be “bcd”.We can keep shifting the string to form a sequence. For example, we can keep shifting “abc” to form the sequence: “abc” -> “bcd” -> … -> “xyz”. Given an array of strings strings, group all strings[i] that belong to the same shifting sequence. You may return the answer in any order. ...

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