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  • Custom User Avatar

    You've modified the original array.

  • Default User Avatar

    Please correct me if I am wrong, but the following test case is incorrect, is not it?

    Expected 'true' on input of
    1 2 3 4 5 6 7 8 9
    1 2 3 4 5 6 7 8 9
    1 2 3 4 5 6 7 8 9
    1 2 3 4 5 6 7 8 9
    1 2 3 4 5 6 7 8 9
    1 2 3 4 5 6 7 8 9
    1 2 3 4 5 6 7 8 9
    1 2 3 4 5 6 7 8 9
    1 2 3 4 5 6 7 8 9 -
    Expected: true, instead got: false