Find length of circular linked list in golang

Go program for Find length of circular linked list . Here more information.

package main
import "fmt"
// Go program for
// Count number of nodes in circular linked list 

// Define strcut of linked list Node
type LinkNode struct {
	data int
	next * LinkNode
}
func getLinkNode(data int, first * LinkNode) * LinkNode {

	return &LinkNode {data,first}
}
type CircularLinkedList struct {
	head * LinkNode
}
func getCircularLinkedList() * CircularLinkedList {

	return &CircularLinkedList {nil}
}
// Insert node at end of circular linked list
func(this *CircularLinkedList) insert(value int) {
	// Create a new node
	var node * LinkNode = getLinkNode(value, this.head)
	if this.head == nil {
		// First node of linked list
		this.head = node
		node.next = this.head
	} else {
		var temp * LinkNode = this.head
		// Find the last node
		for (temp.next != this.head) {
			// Visit to next node
			temp = temp.next
		}
		// Add new node at the last 
		temp.next = node
	}
}
func(this CircularLinkedList) countNode() int {
	if this.head == nil {
		return 0
	}
	// Start with second node
	var temp * LinkNode = this.head.next
	// This is used to count linked node
	var count int = 1
	// iterate circular linked list
	for (temp != this.head) {
		count += 1
		// Visit to next node
		temp = temp.next
	}
	return count
}
func main() {
	var cll * CircularLinkedList = getCircularLinkedList()
	// Add nodes
	cll.insert(1)
	cll.insert(3)
	cll.insert(5)
	cll.insert(7)
	cll.insert(9)
	cll.insert(11)
	// Display result
	fmt.Println(cll.countNode())
}

Output

6