JAVA week 1 Program question 5

Java Week 1:Q5 

/*Complete the code segment to find the highest mark and average mark secured by Hari in "s" number of subjects. */

import java.util.Scanner;
public class Exercise1_5
{
    public static void main(String[] args)
 {
  Scanner input = new Scanner(System.in);
         double mark_avg;
         int result;
         int i;
         int s;
      //define size of array
       s = input.nextInt();
     //The array is defined "arr" and inserted marks into it of integer type.
      int[] arr = new int[s];  
     
  for(i=0;i<arr.length;i++)
   {
         arr[i]=input.nextInt();
   }
//Initialize maximum element as first element of the array.
int max=arr[0];
   //Traverse array elements to get the current max.
for(i=0;i<arr.length;i++)
  if(max<arr[i])
      max=arr[i];
   //Store the highest mark in the variable result.
  result=max;
   //Store average mark in avgMarks.
double avg,sum=0;
for(i=0;i<arr.length;i++)
{
  sum=sum+arr[i];
}
Double d=Double.valueOf(s);
avg=(sum/d);

System.out.print(max+"\n"+avg);
}
}