You don't specify what you think the bug is, but I'm going to assume you're surprised by the sort order. If so, you should reread the documentation on sort: unless you tell it otherwise, it sorts by string comparison, rather than numeric comparison. Since the character value for 3 is less than that of 8, "30" is less than "8" (but greater than "08", of course).
To get the result you're probably looking for, try
foreach (sort {$a <=> $b} @arr) {... }
If God had meant us to fly, he would *never* have given us the railroads.
--Michael Flanders
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