Question

goal Find the average of the elements in the list (list could have any number of elements).
If the average is a decimal number, return only the integer part. Example: if average=10.8, return 10
Example: if list={10, 20, 30, 40, 50}, the method should return: 30

import java.io.*;
import java.util.Scanner;

class Node {
int data;
Node next;
Node(int d){ // Constructor
   data = d;
   next = null;
}
}

class LinkedList {// a Singly Linked List
   Node head; // head of list
   public void insert(int data){ // Method to insert a new node
       Node new_node = new Node(data); // Create a new node with given data
       new_node.next = null;
       if (head == null) // If the Linked List is empty, then make the new node as head
           head = new_node;
       else {// Else traverse till the last node and insert the new_node there
           Node last = head;
           while (last.next != null)
               last = last.next;
           last.next = new_node; // Insert the new_node at last node
       }
   }
}

class Main {
public static void main(String[] args)
   {
       LinkedList list = new LinkedList();/* Start with the empty list. */
       Scanner scan = new Scanner(System.in);
       int num;
       for (int i=0; i<10; i++){//Read list values
           num = scan.nextInt();
           list.insert(num);
       }
System.out.println(""+getAvg(list));
   }

   
public static int getAvg(LinkedList list) {
       //goal Find the average of the elements in the list (list could have any number of elements).
      
       //If the average is a decimal number, return only the integer part. Example: if average=10.8, return 10
       //Example: if list={10, 20, 30, 40, 50}, the method should return: 30

      
   }

}

Answer 1

import java.io.*;
import java.util.Scanner;

class Node {
    int data;
    Node next;
    Node(int d){ // Constructor
        data = d;
        next = null;
    }
}

class LinkedList {// a Singly Linked List
    Node head; // head of list
    public void insert(int data){ // Method to insert a new node
        Node new_node = new Node(data); // Create a new node with given data
        new_node.next = null;
        if (head == null) // If the Linked List is empty, then make the new node as head
            head = new_node;
        else {// Else traverse till the last node and insert the new_node there
            Node last = head;
            while (last.next != null)
                last = last.next;
            last.next = new_node; // Insert the new_node at last node
        }
    }
}

public class Main {
    public static void main(String[] args)
    {
        LinkedList list = new LinkedList();/* Start with the empty list. */
        Scanner scan = new Scanner(System.in);
        int num;
        for (int i=0; i<5; i++){//Read list values
            num = scan.nextInt();
            list.insert(num);
        }
        System.out.println(""+getAvg(list));
    }


    public static int getAvg(LinkedList list) {
        // declare variables
        int num = 0;
        int sum = 0;
        
        // if head is null means list is empty
        if (list.head == null) {
            return -1;
        }
        
        // get the current 
        Node current = list.head;
        
        // loop till end
        while (current != null) {
            num += 1;   // count the length
            sum += current.data;    // calculate sum
            current = current.next;     // make list point to next
        }
        
        // return the average
        return sum/num;

    }

}

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FOR HELP PLEASE COMMENT.
THANK YOU,