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#!/usr/bin/perl -w
use strict;
...
}
@results = sort { $a <=> $b } @results;
print "Linear search: @results\n";

my @alphas = qw/ 9 4 3 2 22  13 7  140 95 278/;
my @betas  = qw/ 8 3 4 1 278 94 15 7   19 200/;
...

@results = sort { $a <=> $b } @results;
print "Hash lookup:   @results\n";

my @alphas = qw/ 9 4 3 2 22  13 7  140 95 278/;
my @betas  = qw/ 8 3 4 1 278 94 15 7   19 200/;
...
        return undef;
    }
}