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My half-assed try... 67

for('00'..'99'){$a.=$_ unless $x{$_} or $x{reverse $_}++};print $a; #234567890#234567890#234567890#234567890#234567890#234567890#234567 # 1 2 3 4 5 6

Note, it includes '00' which some people are missing...

Update... 59? (similar to hardburn's solution)

for('00'..'99'){$x{$_}++unless $x{reverse()}};print keys%x;

Update 2 ...50?


Update 3: after a clarification, i guess i've misunderstood the problem. I thought it needed all unique pairs, separately (ie. 00, 01, 02, 03...). My bad.

Update 4: Here's one that actually passes the checker (60)


Update... 57!


"To err is human, but to really foul things up you need a computer." --Paul Ehrlich

In reply to Re: Friday Golf: All 2-digit combinations by LTjake
in thread Friday Golf: All 2-digit combinations by PhilHibbs

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