RosettaCodeData/Task/Ackermann-function/Python/ackermann-function-2.py

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Python
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2013-04-10 12:38:42 -07:00
def ack2(M, N):
if M == 0:
return N + 1
elif N == 0:
return ack1(M - 1, 1)
else:
return ack1(M - 1, ack1(M, N - 1))