Average of N Numbers in Java using For loop | While loop | Array

Average of N numbers in java using For loop, While loop, and Array.

In this article, you will learn how to find the average of N numbers in java using For loop, While loop, and Array.

Example

You should have knowledge of the following topics in Java programming to understand this program:

• Java java.util.Scanner package
• Java main() method
• Java System.out.println() function
• Java For loop
• Java While loop
• Java Array

Source Code

// Average of N Numbers in Java using For loop
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
    	Scanner in = new Scanner(System.in);

        System.out.println ("Enter the number of elements to calculate the average::");
        int x=in.nextInt(); // Counting of input elements
        float avg=0; // Average of the input elements

        System.out.println ("\nEnter " + x + " elements one by one");
        int y=0;
        for(int i = 0; i < x; i++) {
            y=in.nextInt();
            avg += y;
        }
        avg /= x;
        System.out.println ("\nThe average of the entered input numbers is = " + avg);
    }
}

Run

Output

Explanation

In this given program, we have taken the inputs size of the input elements 3 and these input elements 34563, 3522, 6553 to calculate the average of these elements.

After that, I made the sum of each element of the array we divided this value by the input value 3.

After the whole calculation, It will return the 14879.333 the output of the program.

Average of N Numbers in Java using While loop

// Average of N Numbers in Java using While loop
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
    	Scanner in = new Scanner(System.in);

        System.out.println ("Enter the number of elements to calculate the average::");
        int x=in.nextInt(); // Counting of input elements
        float avg=0; // Average of the input elements

        System.out.println ("\nEnter " + x + " elements one by one");
        int y=0, i=0;
        while (i < x) {
            y=in.nextInt();
            avg += y;
            i++;
        }
        avg /= x;
        System.out.println ("\nThe average of the entered input numbers is = " + avg);
    }
}

Run

Average of N Numbers in Java using Array

// Average of N Numbers in Java using Array
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
    	Scanner in = new Scanner(System.in);

        System.out.println ("Enter the number of elements to calculate the average::");
        int x=in.nextInt(); // Counting of input elements
        float avg=0; // Average of the input elements

        System.out.println ("\nEnter " + x + " elements one by one");
        int arr[] = new int[x]; // Array initialized with length
        
        // It will read the inputs and puts them into an array variable
        // It will make a sum of each element of the array
        for(int i=0; i<x; i++) {
            arr[i]=in.nextInt();
            avg += arr[i];
        }
        avg/=x;
        
        // It will print the final output
        System.out.println ("\nThe average of the entered input numbers is = " + avg);
    }
}

Run

Output