suffix arrays

https://en.wikipedia.org/wiki/Suffix_array
https://academic.oup.com/bib/article/15/2/138/212729


I'm trying to understand the use for suffix arrays.  One of the examples was DNA studies... hence the bioinformatician's guide link above....  These algorithms and suffix arrays save time and memory... but how?   That's my question for the night,  then I can really tackle the class assignment.

I mean, it's kinda like telling someone to build a lawnmower, but they have no idea what a lawnmower is supposed to do.  Does it dry laundry?  Does it walk the family pet?  Does it heat water?  Does it tell you your hair looks silly when it's wet?  What is it supposed to do? 

...  Maybe I need a british comedy.  That always sets the right mood for some reason.


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