Program to Calculate Sum and Average of Array elements

Table Of Contents
  1. Program to Calculate Sum and Average of Array Elements | Example 1
  2. Program to Calculate Sum and Average of Array elements | Example 2

In this section, we will see various variations on how to write this program.In Example 1, we will be taking array input in a predefined fashion i.e. we will be assigning elements to array pre -pre-compilation.In Example 2 we will be taking user defined array and performing operations to it.

Program to Calculate Sum and Average of Array Elements | Example 1

Algorithm:

  • Start
  • Initialize an array.
    • int array[]={array elements};
  • Define variable sum=0 to calculate array sum.
  • initialize for loop
    • for (int i=0;i<array.length;i++)//loop till array length.
    • Calculate sum=sum+array[i].
  • print Array sum.
  • Calculate average=sum/array.length;
  • print Array average.
  • end
/*
Java Program to find Sum and Average of array Elements */
import java.util.*;
public class arrayoperations
{
public static(String args[]){
 int array[]={10,20,30,40,50,60};// you can define double array too
 int sum=0;
for(int i=0;i<array.length;i++)
{
/* 
This logic is used  for calculating sum of array elements*/
  sum=sum + array[i];
}
  System.out.println("Sum of Array Elements are:"+sum);
  double average=(sum/arr.length);//simple average formula
  System.out.format("Average of Array Elements is" +average);
}
}
Output:
Sum of Array Elements are:210
Average of Array Elements is: 35.000

Program to Calculate Sum and Average of Array elements | Example 2

Algorithm:

  • Start
  • define int size.//size for an array
  • Initialize an array.
    • Scanner sc=new Scanner(System.in).
    • size=sc.nextInt();
    • int array[size]={array elements};
  • Define variable sum=0 to calculate array sum.
  • initialize for loop for
    • (int i=0;i<array.length;i++)//loop till array length.
    • array[i]=sc.nextInt();
    • Calculate sum=sum+array[i].
  • print Array sum.
  • Calculate average=sum/array.length;
  • print Array average.
  • end
/*
Java Program to find Sum and Average of array Elements */
import java.util.*;
public class arrayoperations
{
 public static void main(String arg[]){
 int size;
 System.out.println("Enter the Size or Array");
 Scanner sc= new Scanner(System.in);
 size=sc.nextInt();
 int array[]=new int[size];// you can define double array too
 int sum=0;
  for(int i=0;i<array.length;i++)
 {
/* 
This logic is used  for calculating sum of array elements*/
  array[i]=sc.nextInt();
  sum=sum + array[i];
}
  System.out.println("Sum of Array Elements are:"+sum);
  double average=(sum/array.length);//simple average formula
  System.out.format("Average of Array Elements is" +average);
}
}
Output:
Enter the Size or Array
5
Enter Elements in Array
10 20 30 40 50
Sum of Array Elements are:150
Average of Array Elements is30.0

Leave a Comment