a hacky solution

  • -2

    The easiest way is to use Integer.toHexString()

    return Integer.toHexString(num);

    I know it is hacky, but it is what it is...

  • 0

    It's not hacky. It's againt the requirement.

  • 0

    According to the instruction, "You must not use any method provided by the library which converts/formats the number to hex directly".

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