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numb er base solution in Clear category for Number Base by Krzysztof_bonczyk
def checkio(str_number, radix):
wyn=0
pot=0
for i in range(len(str_number)-1,-1,-1):
if str_number[i]>'9':
wyn=(ord(str_number[i])-ord('A')+10)*(radix**pot)+wyn
if ord(str_number[i])-ord('A')>radix-10:
return -1
else:
wyn=(ord(str_number[i])-ord('0'))*(radix**pot)+wyn
if ord(str_number[i])-ord('0')>=radix:
return -1
pot=pot+1
return wyn
#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"
Nov. 4, 2016
