I would like to randomise and array in a easy way. What do you think of this one? 
my @arr=(1..20);

for(1..200)
{
    $random_position=int(rand($#arr));
    $var=splice(@arr, $random_position, 1);
    push(@arr, $var);
}

foreach (@arr)
{print "$_\n";}

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In reply to Randomising an array by tamaguchi

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