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Golang program to insert a node at the ith index node, when the index is at the mid-index position in the linked list.
Examples
Example
package main import "fmt" type Node struct { value int next *Node } func NewNode(value int, next *Node) *Node{ var n Node n.value = value n.next = next return &n } func TraverseLinkedList(head *Node){ temp := head for temp != nil { fmt.Printf("%d ", temp.value) temp = temp.next } fmt.Println() } func InsertNodeAtIthIndex(head *Node, index, data int) *Node{ if head == nil{ head = NewNode(data, nil) return head } if index == 0{ newNode := NewNode(data, nil) newNode.next = head head = newNode return head } i := 0 temp := head preNode := temp for temp != nil { if i == index{ newNode := NewNode(data, nil) preNode.next = newNode newNode.next = temp break } i++ preNode = temp temp = temp.next } return head } func main(){ head := NewNode(30, NewNode(10, NewNode(40, NewNode(40, nil)))) fmt.Printf("Input Linked list is: ") TraverseLinkedList(head) index := 1 head = InsertNodeAtIthIndex(head, index, 15) fmt.Printf("Inserting new node at %dth index, Linked List is: ", index) TraverseLinkedList(head) }
Output
Input Linked list is: 30 10 40 40 Inserting new node at 1th index, Linked List is: 30 15 10 40 40
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