dll.c - Doubly Linked List
ll.c - Linked List
medll.c - Memory Efficient Doubly Linked List
selfoll.c - Self Organizing Linked List
skipll.c - Skip Linked List
unrll.c - Unrolled Linked List
disjset.c - Disjoint Sets (Island counter)
dict.c - Dictionary or Hash Table
bst.c - Binary Search Tree
avl.c - AVL Tree
splay.c - Splay Tree