Sorting isn't a particularly efficient way of finding the maximum length, but unless your strings are huge, it probably won't matter too much. 

print +( sort{ length $b <=> length $a } $s =~ m[((.)\2+)]g )[ 0 ];;

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In reply to Re: Longest possible run of a single character by BrowserUk
in thread Longest possible run of a single character by srdst13

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