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ALGORITHM FOR INSERTING A NODE
Suppose
• START is the first position in linked list.
• VALUE be the element to be inserted in the new
node.
•POS is the position where the new node is to
be inserted.
• TEMP is a temporary pointer to hold the node
address.
13
ALGORITHM FOR INSERTING A NODE
Insert a Node at the
beginning
1.Input VALUE to be
inserted
2.Create a NewNode
3.NewNode -> DATA =
VALUE
4.NewNode -> Next =
START
5.START = NewNode
6.Exit
14
ALGORITHM FOR INSERTING A NODE
Insert a Node at the end
1.Input VALUE to be inserted
2.Create a NewNode
3.NewNode -> DATA = VALUE
4.NewNode -> Next = NULL
8.If (SATRT equal to
NULL) START =
NewNode
9.Else
(a)TEMP = START
(b)While (TEMP ->
Next not equal
to NULL)
TEMP = TEMP -> Next 15
ALGORITHM FOR INSERTING A NODE
Insert a Node at any specified position (POS=1
means insert
after first node. POS=0 not allowed)
1.Input VALUE and POS to be inserted
2.initialize TEMP = START
3.Repeat until POS
TEMP = TEMP  Next
4.Create a New Node
5.NewNode -> DATA = VALUE
6.NewNode -> Next = TEMP -> Next
7.TEMP -> Next = NewNode
8.Exit
16
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Link List ALGORITHM FOR INSERTING A NODE

  • 1. ALGORITHM FOR INSERTING A NODE Suppose • START is the first position in linked list. • VALUE be the element to be inserted in the new node. •POS is the position where the new node is to be inserted. • TEMP is a temporary pointer to hold the node address. 13
  • 2. ALGORITHM FOR INSERTING A NODE Insert a Node at the beginning 1.Input VALUE to be inserted 2.Create a NewNode 3.NewNode -> DATA = VALUE 4.NewNode -> Next = START 5.START = NewNode 6.Exit 14
  • 3. ALGORITHM FOR INSERTING A NODE Insert a Node at the end 1.Input VALUE to be inserted 2.Create a NewNode 3.NewNode -> DATA = VALUE 4.NewNode -> Next = NULL 8.If (SATRT equal to NULL) START = NewNode 9.Else (a)TEMP = START (b)While (TEMP -> Next not equal to NULL) TEMP = TEMP -> Next 15
  • 4. ALGORITHM FOR INSERTING A NODE Insert a Node at any specified position (POS=1 means insert after first node. POS=0 not allowed) 1.Input VALUE and POS to be inserted 2.initialize TEMP = START 3.Repeat until POS TEMP = TEMP  Next 4.Create a New Node 5.NewNode -> DATA = VALUE 6.NewNode -> Next = TEMP -> Next 7.TEMP -> Next = NewNode 8.Exit 16