Java Program to find Average of N Numbers

Posted in Java Tutorial

Updated on Oct 30, 2024

By Mari Selvan

👁️ 114 - Views

⏳ 4 mins

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Java Program to find Average of N NumbersJava

Photo Credit to CodeToFun

🙋 Introduction

In the world of programming, dealing with numerical data and performing calculations is a fundamental skill. One common task is finding the average of a set of numbers. This is a basic operation used in various applications, ranging from statistical analysis to data processing.

In this tutorial, we will explore a Java program designed to find the average of N numbers. The program takes a user-specified number of inputs, calculates their sum, and then computes the average.

📄 Example

Let's delve into the Java code that accomplishes this task.

FindAverage.java

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import java.util.Scanner;

public class FindAverage {

  // Function to find the average of N numbers
  static double findAverage(int n) {
    double sum = 0, number;

    // Input N numbers from the user
    Scanner scanner = new Scanner(System.in);
    System.out.println("Enter " + n + " numbers:");

    for (int i = 0; i < n; ++i) {
      // Input each number and add to the sum
      number = scanner.nextDouble();
      sum += number;
    }

    // Calculate the average
    double average = sum / n;
    return average;
  }

  // Driver program
  public static void main(String[] args) {
    // Replace this value with your desired number of inputs (N)
    int n = 5;

    // Call the function to find the average
    double result = findAverage(n);

    // Display the result
    System.out.println("The average of the entered numbers is: " + result);
  }
}

💻 Testing the Program

To test the program with different numbers, modify the value of n in the main function.

Output

Enter 5 numbers:
1 2 3 4 5 
The average of the entered numbers is: 3.000000

🧠 How the Program Works

The program defines a class FindAverage containing a static method findAverage that takes an integer n as input, prompts the user to input n numbers, calculates their sum, and then computes and returns the average.
Inside the main method, replace the value of n with your desired number of inputs.
The program calls the findAverage method, and the result is displayed.

🧐 Understanding the Concept to find Average of N Numbers

Before delving into the code, let's understand the concept behind finding the average of N numbers. The program uses a loop to input N numbers, calculates their sum, and then divides the sum by N to find the average.

For example, if the user enters 5 numbers (10, 15, 20, 25, 30), the program calculates (10 + 15 + 20 + 25 + 30) / 5, resulting in an average of 20.