Can T have characters repeating ?

  • 38

    Can the String T have repeating characters - for instance "AA"? In that case should the minimum window contain two A's or does it suffice for it have a single A.

  • 18

    Yes, T could have repeating chars. And minimum window should contain all of them. Here is an example test case from OJ:

    Input: "aa", "aa"

    Expected: "aa"

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