Let’s learn java program to find sum & average of an array.
Java program to find sum & average of an array
To find sum and average of an array first user enters (total) number of elements using nextInt() method of Scanner class.
This number is stored in integer variable number. Then this number is assigned to integer array arrNum.
Now user enters each elements or numbers which gets stored in integer array arrNum and meanwhile calculate sum in for loop.
This sum is divided by total number of elements in array to calculate average. Here’s the java program.
import java.util.Scanner;
public class Main
{
public static void main(String[] args)
{
int number, sum = 0;
float average;
Scanner sc = new Scanner(System.in);
System.out.println("Enter number of elements : ");
number = sc.nextInt();
int[] arrNum = new int[number];
System.out.println("Enter " + number + " elements : ");
for(int a = 0; a < number ; a++)
{
arrNum[a] = sc.nextInt();
sum = sum + arrNum[a];
}
System.out.println("Sum is : " + sum);
// average of an array
average = (float)sum / number;
System.out.println("Average is : " + average);
sc.close();
}
}
Output:
