algorithm lists

[monkyyy]

when I was writing my proof of concept std I had a list of 44 
functions to impliment 
https://gist.github.com/crazymonkyyy/308bf3387ceec5c84883678d0fc097a7

it was a bit of a mess but like it probably was very helpful that 
I had a plan at all

Id like a 2nd opinion on the fundamental list of important 
algorithms

map/filter/reduce is to few, all of phoboes is to many and I will 
not be recreating several of the functions I consider bad design

>10, <50; what are the important fairly comprehensive algorithms 
>that cover the majority of the space