Honestly, a lot of programming data structure concepts were difficult to grasp /until/ I truly understood how linked list works. It's a very simple concept in h

Honestly, a lot of programming data structure concepts were difficult to grasp /until/ I truly understood how linked list works. It's a very simple concept in hindsight, but as a newbie programmer - this was an alien concept. Linked list? Just give me my array or built in List! Then I understood how to build a linked list and how it can be extended in various ways. They can be used to solve interesting problems. Many high level languages provide pre-baked implementations of LL but most programmers don't understand how they work under the surface. When I understood LL, I was able to apply that understanding to trees.