The best way to unsort an array? Sort it!! 

@a=0..20;$,=" ";
print sort {1-int rand 3} @a;

[download]

OK, I couldn't resist golfing it.
<Reveal this spoiler or all in this thread>
s//----->\t/;$~="JAPH";s//\r<$~~/;{s|~$~-|-~$~|||s |-$~~|$~~-|||s,<$~~,<~$~,,s,~$~>,$~~>,, $|=1,select$,,$,,$,,1e-1;print;redo}

In reply to Re: Randomising an array by starbolin
in thread Randomising an array by tamaguchi

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