Hi PerlMonkers:

I ran into a fairly trivial problem theoretically but I am blanking out how to code it in Perl. I thought I was pretty good with doing simple stuff in Perl and I feel clueless how to start for this problem. What I want is to use the table below to derive a matrix saying for each pair of persons, how many countries/cities are different between them. 

Name1  USA,Canada,Yemen 
Name2  Canada,Portugal,India
Name3  China,HongKong,Canada
Name4  London,Amsterdam,Ireland,USA
Name5  India,USA,Canada

[download]
ID    Name1 Name2 Name3 Name4 Name5
Name1  0     2     2     2      1
Name2
Name3
Name4
Name5

[download]

Any help is highly appreciated!! <\p>

In reply to Doing pair-exclusivity analysis and building a matrix by angerusso

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