How to Find the Length of a Linked List using Recursion - The Coding Shala

Home >> Data Structures >> Find the Length of a Linked List using Recursion

 In this post, we will learn how to find the length of a linked list using recursion in Java.

How to Find the Length of a Linked List using Recursion

You have given a singly linked list, write a Java program to count the number of elements or length of the linked list using recursion.

Example 1:
LinkedList: 1->2->3->4->5
Output: 5

Example 2:
LinkedList: 2->4->6->7->5->1->0
Output: 7

Approach 1

If the current node is null then it will be our break condition of recursion.

Java Program: 

/*
class Node{
    int data;
    Node next;
    Node(int a){  
        data = a; 
        next = null; 
    }
}*/

class Solution
{
    public static int getCount(Node head)
    {
        return findLength(head);
    }
    
    public static int findLength(Node curr) {
        if(curr == null) {
            return 0;
        }
        return 1 + findLength(curr.next);
    }
}


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