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Java Program to find the sum and average of array Elements

Get array size n and n elements of array, then compute sum and average of the elements.

Sample Input 1:

5 5 7 9 3 1

Sample Output 1:

25 5.0

Program or Solution

					    
							
import java.util.*;
class SAvArray
{
  public static void main(String args[])
  {
     int size,i,sum=0;
     double avg;     
     Scanner sc=new Scanner(System.in);
     System.out.println("Enter Size Of Array:");
     size=sc.nextInt();
     int a[]=new int[size];
     System.out.println("Enter The Array Elements:\n");
     for(i=0;i<size;i++)
        {
            a[i]=sc.nextInt();
	    sum=sum+a[i];
	}
     System.out.println("The Sum Of Array Elements Is:\n"+sum);
     avg=sum/size;
     System.out.println("The Average Is:"+avg);
     

  }
}
					    
					

Program Explanation

i is initialized to 0 and incremented by 1 at each iteration of both the for loops.

First for loop reads n input numbers from user and stores them in array a[] from location 0 to n-1 Second for loop adds all the n elements of array located from 0 to n-1 Finally compute average using avg=sum/n statement and prints average avg using system.out.println.