Because these things are immensely useful, but only if you know about them and can recognize when they will help in solving a problem. For example, I ended up implementing a linked list recently to efficiently allow editing of an ordered, traversable set of lines on a google map (a drawn route). There are other ways to solve the problem, but a linked list was the simplest as well as most performant.
Anyway, moral of the story is fundamental CS concepts come in handy if you know them enough to recognize how they will make a problem easier. Bonus points if you can whip it out in a few hours, which may be difficult if you have never done it before.
Anyway, moral of the story is fundamental CS concepts come in handy if you know them enough to recognize how they will make a problem easier. Bonus points if you can whip it out in a few hours, which may be difficult if you have never done it before.