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Golang Program to count the number of nodes in a linked list.
Examples
Approach to solve this problem
Step 1 − Define a method that accepts the head of the linked list.
Step 2 − Initialize a variable, count := 0.
Step 3 − Iterate the given linked list till it reaches the last node.
Step 4 − Increase the count by 1 in the loop.
Step 5 − Return count.
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 CountNodes(head *Node){
fmt.Printf("Input Linked List is: ")
count :=0
temp := head
for temp != nil {
fmt.Printf("%d ", temp.value)
temp = temp.next
count += 1
}
fmt.Printf("\nNumber of nodes in the linked list is: %d\n", count)
}
func main(){
head := NewNode(30, NewNode(10, NewNode(40, NewNode(40, nil))))
CountNodes(head)
}Output
Input Linked List is: 30 10 40 40 Number of nodes in the linked list is: 4
Updated on: 18-Mar-2021
5K+ Views
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