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Deleted for having a low rating, but you can still solve it here:
Could we learn from the past - why this puzzle got a low rating?
Just my two cents. I did not try to solve the puzzle because it felt really unattractive: once parsing is done (and this is usually a very boring task), there is not much left to do
I did not do it either.
The puzzle tells people how to split a string and then where to swap two sub-strings and where to delete something.
Programmers have no choice but to follow the instructions, which is boring.
Ideally, a puzzle should not have these low-level details of data structure and step-by-step data processing procedures. Give some free space for programmers to innovate.