in reply to Sort hash ref of Hash of Hashes
You are comparing string values 'PQRST' etc... but using the numerical sort (spaceship '<=>') operator. You should be using cmp. See sort for more info.
So, always use warnings;. (Documented in perllexwarn).
An Englishman in New York
An American Werewolf in London
An American in Paris
The Innocents Abroad
An Idiot Abroad
Robinson Crusoe on Mars
A Connecticut_Yankee in King Arthur's Court
There and Back Again
Travels into Several Remote Nations of the World
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