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Without int() solution in Creative category for Number Base by sumeet.lintel
# migrated from python 2.7
def checkio(str_number, radix):
value = 0
for i, c in enumerate(reversed(str_number)):
digit = ord(c) - (55 if c.isalpha() else 48)
if digit >= radix:
return -1
value += radix**i * digit
return value
#These "asserts" using only for self-checking and not necessary for auto-testing
if __name__ == '__main__':
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"
March 4, 2015
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