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This problem made me question my existence. :(
I got horribly confused with this one so thought I would shed some light on the practice questions:
Zero indexed showing initial string, numbers and each match.
absolutely no explanation, a good representation of the state of most of the programming questions on this site.
It would help if the second example was explained instead of leaving it as an excercise. One example is not enough to understand the whole question.
This is a terribly worded problem.
The only explanation is a link to the wiki page on anagrams - no explanation as to what exactly an unordered anagrammatic pair is. The only example that is explained is a) symmetric b) only contains four letters.
I can just about guess what is asked here, but this is an awfully worded question and should either be improved or removed.