"John" == John Toohey <jt@parspro.com> writes:
John> What I needed to do was from a sequence of say, 0 to: 4, produce #(0 0)#(1 John> 1)#(2 2)#(3 3)#(4 4)#(1 0)#(2 1)#(3 2)#(4 3)#(0 4)#(2 0)#(3 1)#(4 2)#(0 John> 3)#(1 4)#(3 0)#(4 1)#(0 2)#(1 3)#(2 4)#(4 0)#(0 1)#(1 2)#(2 3)#(3 John> 4). Basically, I wanted to generate all possible scores for a soccer match, John> hence the 1-1, 0-0, etc. That's what I did. You want X, Y for all possible values of X from 0 to 4 and Y from 0 to 4, right? That's *not* permutations. That's *not* combinations. That's "combinations with replacement/repetition". ... http://en.wikipedia.org/wiki/Combination I hate it when people use the words permutation or combination without realizing they have specific math meanings. But that's not your fault, but I hope you never do it again. :) -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 <merlyn@stonehenge.com> <URL:http://www.stonehenge.com/merlyn/> Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion