Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

Re: Getting the intersection of n collections.

by dtr (Scribe)
on Oct 11, 2006 at 11:59 UTC ( #577591=note: print w/replies, xml ) Need Help??


in reply to Getting the intersection of n collections.

Assuming that each number can only appear once in each list, then the following should work:-

my %counts = (); foreach my $val (@d1, @d2, @d3) { $counts{$val}++; } return grep { $counts{$_} == 3 } sort keys %counts;

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://577591]
help
Chatterbox?
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others taking refuge in the Monastery: (5)
As of 2018-02-24 14:29 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    When it is dark outside I am happiest to see ...














    Results (310 votes). Check out past polls.

    Notices?