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

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

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

How to Find the Length of a Linked List

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

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

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

Approach 1

Traverse the linked list until you reached the null node.

Java Program: 

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

class Solution
{
    public static int getCount(Node head)
    {
        int count = 0;
        Node curr = head;
        while (curr != null) {
            count++;
            curr = curr.next;
        }
        
        return count;
    }
}


Other Posts You May Like
Please leave a comment below if you like this post or found some errors, it will help me to improve my content.
By

Comments

Post a Comment

Popular Posts from this Blog

Shell Script to find sum, product and average of given numbers - The Coding Shala

Home >> Scripting >> Sum, product and average Shell Script to find the sum, product, and the average of given numbers Read four integer numbers from the user and find the sum, product, and average of these four numbers? Code:  #! / bin / bash echo "enter four integers" read a b c d sum =$(echo "$a + $b + $c + $d" | bc - l) average=$(echo "$sum / 4" | bc - l) product=$(echo "$a * $b * $c * $d" | bc - l) echo "sum = $sum" echo "Average = $average" echo "Product = $product" Other Posts You May Like Shell script to print sum of the digits of a number Shell Script to print number in descending order Shell script to find out biggest number from three numbers Shell script to find out factorial of a number Shell Script to create a simple calculator Please leave a comment below if you like this post or found some error, it will help me to improve my content.
Read more

New Year Chaos Solution - The Coding Shala

Home >> Programming Questions >> New Year Chaos New Year Chaos Problem Solution In this post, you will learn how to solve New Year Chaos Problem and implement its solution in Java. Problem:   It's New Year's Day and everyone's in line for the Wonderland rollercoaster ride! There are a number of people queued up, and each person wears a sticker indicating their initial position in the queue. Initial positions increment from at the front of the line to at the back.  Any person in the queue can bribe the person directly in front of them to swap positions. If two people swap positions, they still wear the same sticker denoting their original places in line. One person can bribe at most two others.  For Example, if n=8 and Person 5 bribes Person 4, the queue will look like this: 1,2,3,5,4,6,7,8. Fascinated by this chaotic queue, you decide you must know the minimum number of bribes that took place to get the queue into its current state. Input:
Read more

Java Method Overloading - The Coding Shala

Image
Home >> Learn Java >> Java Method Overloading Java Method Overloading Java class can have more than one method with the same name but different in parameters, known as Method Overloading. Question: What is the use of method overloading? Answer:  Suppose we want to perform some operation like an addition but addition can be performed between two numbers, three numbers or two floats or more. So instead of using different methods, we use the same name of the method with different parameters. This can increase the readability of the program. Method overloading can be achieved by changing numbers of arguments or by changing the data types. Example of Method Overloading in Java The following example explains Method Overloading: //Method Overloading example class Addition { public int add ( int a , int b ){ return a + b ; } public int add ( int a , int b , int c ){ return a + b + c ; }
Read more

Shell Script to Create a Simple Calculator - The Coding Shala

Home >> Scripting >> simple calculator Shell Script to Create a Simple Calculator Write a shell script to create a simple calculator using a switch-case statement? Code:  #! / bin / bash echo "simple calculator" sum = 0 i = "y" echo "enter first number" read n1 echo "enter second number" read n2 while [ $ i = "y" ] do echo "1.Addition" echo "2.Subtraction" echo "3.Multiplication" echo "4.Division" echo "Enter choice" read ch case $ch in 1 ) sum =$(echo " $n1 + $n2" | bc - l) echo "Addition is =" $ sum ;; 2 ) sum =$(echo "$n1 - $n2" | bc - l) echo "Sub is =" $ sum ;; 3 ) sum =$(echo "$n1 * $n2" | bc - l) echo "Mul is =" $ sum ;; 4 ) sum =$(echo "$n1 / $n2" | bc - l) echo "div is =" $ sum ;; * )echo "invalid choice" esac echo "Do y
Read more

Maximum Width Ramp LeetCode Solution - The Coding Shala

Last Updated: 26-Jan-2021 Home >> LeetCode >> Maximum Width Ramp  In this post, we will learn how to solve LeetCode's Maximum Width Ramp Problem and will implement its solution in Java. Maximum Width Ramp Problem Given an array A of integers, a ramp is a tuple (i, j) for which i < j and A[i] <= A[j].  The width of such a ramp is j - i. Find the maximum width of a ramp in A.  If one doesn't exist, return 0. Example 1: Input: [6,0,8,2,1,5] Output: 4 Explanation:  The maximum width ramp is achieved at (i, j) = (1, 5): A[1] = 0 and A[5] = 5. Example 2: Input: [9,8,1,0,1,9,4,0,4,1] Output: 7 Explanation:  The maximum width ramp is achieved at (i, j) = (2, 9): A[2] = 1 and A[9] = 1. Practice this problem on LeetCode(Click Here). Maximum Width Ramp Java Solution Approach 1 Brute Force Solution. Note: This might give you a time limit error. Java Program:   class Solution { public int maxWidthRamp ( int [] A ) { int max_width = 0 ;
Read more