Sorting by second letter of first name: 
my @sorted = sort { substr($a, 1, 1) cmp substr($b, 1, 2) } @names;

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The others aren't much more complicated, you just have to enhance the comparison in the curly braces. Or, even better, do a Schwartzian Transform.

In reply to Re: sorta sorting fun by moritz
in thread sorta sorting fun by softworkz

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