Created
February 19, 2015 21:34
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| """This module contains code from | |
| Think Python by Allen B. Downey | |
| http://thinkpython.com | |
| Copyright 2012 Allen B. Downey | |
| License: GNU GPLv3 http://www.gnu.org/licenses/gpl.html | |
| """ | |
| def ackermann(m, n): | |
| """Computes the Ackermann function A(m, n) | |
| See http://en.wikipedia.org/wiki/Ackermann_function | |
| n, m: non-negative integers | |
| """ | |
| if m == 0: | |
| return n+1 | |
| if n == 0: | |
| return ackermann(m-1, 1) | |
| return ackermann(m-1, ackermann(m, n-1)) | |
| print (ackermann(3, 4)) |
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