Re: Better way of writing "find the missing number(s)" -- oneliner

you got easier answers, pardon me for the following (long)oneliner:

perl -E "@sr=sort{$a<=>$b}@ar=(5..7,8,10,-3);map{$h{$_}++}$sr[0]..$sr[
+-1],@ar;say for grep{$h{$_}==1}sort{$a<=>$b} keys %h"
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9
[download]

There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

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