Lists
A list is a sequence of zero or more data items, with the total number of items being the length of the list.
It can grow and shrink on demand and items can be accessed, inserted or deleted at any position.
Types of Lists
Lists in C
struct elem {
struct elem *next;
int val;
};struct elem
struct elem *next;
struct elem *head;
int val;
};struct elem *head = NULL;
struct elem *tail = NULL;