dear all respondees,
thanks for your fast responses, i was in the proces of testing it myself, and had got as far as:
my %seen;
my @sorted = sort($a <=> $b) grep{ $seen{$_}++ } map {substr($_,0,1)}
+@original_array;
when i realised y'all were on the board already!!
I just wanted to point out that my code above printed out this list:
A,A,B,B,C
So why did it only print out the extra As and Bs? Out of curiosity.
Thanks again for your help.
Sam
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