use strict;
use warnings;

use Benchmark qw( cmpthese );

for our $n ( map 10**$_, 1, 3, 6 ) {
    print "Benchmarking $n values\n";
    our @n = map int( rand $n ), 1 .. $n;
    cmpthese -log $n, {
        orig => q[
            my $c=0;
            for my $elem (@n) {
                if ($elem > $t){
                    $c++;
                }
            }
            my $pct= ( @n - $c ) / @n * 100;
        ],
        sort => q[
            my $t = $n >> 1;
            @n = sort{ $a<=>$b } @n;
            my $c=0;
            $c++ while $n[ $c ] <= $t;
            my $pct= ( @n - $c ) / @n * 100;
        ],
        grep => q[
           my $t = $n >> 1;
           my $pct = grep({ $_ > $t } @n ) / @n * 100;
        ],
    };
}