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38 lines
1.0 KiB
Python
38 lines
1.0 KiB
Python
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def remove_digit(num: int) -> int:
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"""
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returns the biggest possible result
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that can be achieved by removing
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one digit from the given number
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>>> remove_digit(152)
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52
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>>> remove_digit(6385)
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685
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>>> remove_digit(-11)
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1
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>>> remove_digit(2222222)
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222222
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>>> remove_digit("2222222")
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Traceback (most recent call last):
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TypeError: only integers accepted as input
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>>> remove_digit("string input")
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Traceback (most recent call last):
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TypeError: only integers accepted as input
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"""
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if not isinstance(num, int):
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raise TypeError("only integers accepted as input")
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else:
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num_str = str(abs(num))
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num_transpositions = [list(num_str) for char in range(len(num_str))]
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for index in range(len(num_str)):
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num_transpositions[index].pop(index)
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return max(
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int("".join(list(transposition))) for transposition in num_transpositions
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)
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if __name__ == "__main__":
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__import__("doctest").testmod()
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