Explanation of some test cases and incorrect test case in OJ

  • 0

    There are two test which I found confusing:
    a) ["wrtkj","wrt"]
    OJ answer: ""
    b) ["z", "z"]
    OJ answer: "z"

    Could somebody please explain why there is a difference in the two. In my opinion, we cannot decide in any of them what the order is as there is not much information. We might say that since there is only word in case b so we can decide, but I think that is a little ambiguous.

    Also the test cases are broken. Here are the screen shots from two of my submissions:



    Please fix them

  • 0

    @administrators Please have a look.

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