My gosh! All those replies with different approaches, and nobody (so far) seems to have tried using a hash <update> kvale's was the only one to use a hash -- it was so short, I missed it, and wrote it again myself </update>: 
#!/usr/bin/perl

use strict;

my %chosen; # you don't need a 10-element array to draw from

while ( keys %chosen < 3 ) {
    my $pick = int( rand(10)) + 1;
    $chosen{$pick} = undef;
}

print join " ", keys %chosen, "\n";

# (you could "sort {$a<=>$b) keys %chosen", if that matters)

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This sort of problem does not merit a lot of optimization, but I think the extra iterations that might be needed on occasion to avoid repeat picks would, on balance, take less time than various amounts of array splicing, shuffling, etc...

In reply to Re: Select three random numbers between 1..10 by graff
in thread Select three random numbers between 1..10 by Perl_User

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