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non-int solution solution in Clear category for Number Base by CDG.Axel
def checkio(str_number: str, radix: int) -> int:
# it's strange to use internal int function for this, so i wrote solution manually
res, fail = 0, False
for n in map(ord, str_number):
add = n - 48 - 7 * (n > 64)
fail = fail or add >= radix
res = res * radix + add
return -1 if fail else res
if __name__ == '__main__':
print('Example:')
print(checkio("AF", 16))
# These "asserts" using only for self-checking and not necessary for auto-testing
assert checkio("AF", 16) == 175, "Hex"
assert checkio("101", 2) == 5, "Bin"
assert checkio("101", 5) == 26, "5 base"
assert checkio("Z", 36) == 35, "Z base"
assert checkio("AB", 10) == -1, "B > A = 10"
print("Coding complete? Click 'Check' to review your tests and earn cool rewards!")
Nov. 2, 2021
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