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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?

for$a(0..9){for(0..9){$x.="$a$_"if$_>=$a}}print$x;

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)

$_=9;for$a(0..9){for$b($a..9){$_.="$a$b"}s/$a{3}/$a$a/}print

Update... 57!

$_=9;for$a(0..9){for$b($a..9){$_.="$a$b"}s/$a$a/$a/}print

--
"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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