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CountNodesOfLinkedList.java
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CountNodesOfLinkedList.java
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import java.util.*;
class Node{
int data;
Node next;
Node(int a){
data = a;
next = null;
}
}
class Solution
{
//Function to count nodes of a linked list.
public static int getCount(Node head){
int count = 0;
Node iterator = head;
while(iterator != null){
count++;
iterator = iterator.next;
}
return count;
}
}
class LinkedList{
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
int t=sc.nextInt();
while(t-->0)
{
int n=sc.nextInt();
Node head = new Node(sc.nextInt());
Node tail = head;
for(int i=0; i<n-1; i++)
{
tail.next = new Node(sc.nextInt());
tail = tail.next;
}
Solution ob = new Solution();
System.out.println(ob.getCount(head));
}
}
}