Roger Browne: > Unfortunately I could only get to Ack(3, 6) before parrot aborted with > "maximum recursion depth exceeded", at recursion depth 1000.
Alternative: #!/usr/bin/perl use strict; use warnings; use Memoize; { local ($,, $\) = ("\t", "\n"); sub ack { return $_[1] +1 if 0 == $_[0]; return ack($_[0] -1, 1) if 0 == $_[1]; return ack($_[0] -1, ack($_[0], $_[1] -1)); } memoize('ack'); my $base = 3; print "Ack($base, $_): ", ack($base, $_) for (0..13); } -- Affijn, Ruud "Gewoon is een tijger."