Linked List
1
, Introduction
• A linked list is a data structure which can change
during execution.
– Successive elements are connected by pointers.
– Last element points to NULL.
– It can grow or shrink in size during execution of a
program.
– It can be made just as long as required.
head
– It does not waste memory space.
A B C
2
,• Keeping track of a linked list:
– Must know the pointer to the first element of the
list (called start, head, etc.).
• Linked lists provide flexibility in allowing the
items to be rearranged efficiently.
– Insert an element.
– Delete an element.
3
, Illustration: Insertion
A B C
Item to be
tmp X inserted
A B C
curr
X
4
1
, Introduction
• A linked list is a data structure which can change
during execution.
– Successive elements are connected by pointers.
– Last element points to NULL.
– It can grow or shrink in size during execution of a
program.
– It can be made just as long as required.
head
– It does not waste memory space.
A B C
2
,• Keeping track of a linked list:
– Must know the pointer to the first element of the
list (called start, head, etc.).
• Linked lists provide flexibility in allowing the
items to be rearranged efficiently.
– Insert an element.
– Delete an element.
3
, Illustration: Insertion
A B C
Item to be
tmp X inserted
A B C
curr
X
4
