I want to check if a list contains incrementing elements, incremented by one each and starting with 0. So, e.g. [0, 1, 2, 3]
should return "valid", whereas e.g. [0, 1, 3, 4]
or [-1, 0, 1]
should return "not valid".
Is there an easy way to achieve that in Python? Maybe a built-in function?
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