There is, of course, more than 1 to do it. My favorite is: 
map {s/\s+$/ /} @array;

[download]
It uses the @array, which makes the code more readable, and PERL's great map function for 1 liners.

In reply to Re: Replacing whitespaces with a regex by ISAI student
in thread Replacing whitespaces with a regex by Dr Manhattan

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