Incorrect output for Min,Max, & Avg loops

Question

This code is mostly working to compute the average and to get the maximum but it is taking 12 inputs and not 10 as required. I'm a bit unsure how to implement the Min into this as well. I would appreciate any guidance that can be provided on this as I'm stumped. Thank you.
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        int maxGrade = 0;
        int minGrade = 0;
       int total = 0;
       int testScores = 0;
       int grade = 0;       
        Scanner scan = new Scanner( System.in );
System.out.println ( "Please enter ten exam scores");
         for ( int i =1; i <= 10; i++ )
    testScores = scan.nextInt();
    total += testScores;
maxGrade = scan.nextInt();
grade = scan.nextInt();
if ( grade > maxGrade )
    maxGrade = grade;
System.out.println( "The average score is: " + ((double) (total) / 10));
System.out.println( "The Maximum score is: " + maxGrade);
}

Answer 1

Suggestions:
1) have your for loop go from 0 to i < 10. Since arrays are zero-based, this habit will help you in the future when you loop through arrays.
2) Your code indentation is atrocious making it hard for us (and for you!) to understand your code. Fix it and you'll make your future coding a lot easier.
3) Get the input only once in the for loop, and not outside and after the for loop as you are trying to to do here:
      maxGrade = scan.nextInt();
      grade = scan.nextInt();It makes no sense. Instead set the maxGrade and the minGrade both with the testScores entered the first time the for loop loops (when i equals 1 in your current code, but when i is 0 if you follow my recommendations). A simple if block -- if (i == 0) should work for this.
4) Inside the for loop and after testScores is entered, check if it is > max or < min and change max and min accordingly. Again this must be done inside of the loop. In pseudo-code
for i goes from 0 to less than 10:
   current score = get user input
   if i is 0
      set maximum score to current score
      set minimum score to current score
   end if
   if current score is less than minimum score
      change minimum score to current score
   end if
   if current score is greater than maximum score
      change maximum score to current score
   end if
end for loopLuck!
Edited by: Encephalopathic on Jul 10, 2010 7:43 AM