test

public class EnhancedFor
{
 public static void main(String[] args)
 { int[] list ={1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
  int sum = sumListEnhanced(list);
  System.out.println("Sum of elements in list: " + sum);

  System.out.println("Original List");
  printList(list);
  System.out.println("Calling addOne");
  addOne(list);
  System.out.println("List after call to addOne");
  printList(list);
  System.out.println("Calling addOneError");
  addOneError(list);
  System.out.println("List after call to addOneError. Note elements of list did not change.");
  printList(list);
 }

 // pre: list != null
 // post: return sum of elements
 // uses enhanced for loop
 public static int sumListEnhanced(int[] list)
 { int total = 0;
  for(int val : list)
  { total += val;
  }
  return total;
 }

 // pre: list != null
 // post: return sum of elements
 // use traditional for loop
 public static int sumListOld(int[] list)
 { int total = 0;
  for(int i = 0; i < list.length; i++)
  { total += list[i];
   System.out.println( list[i] );
  }
  return total;
 }

 // pre: list != null
 // post: none.
 // The code appears to add one to every element in the list, but does not
 public static void addOneError(int[] list)
 { for(int val : list)
  { val = val + 1;
  }
 }

 // pre: list != null
 // post: adds one to every element of list
 public static void addOne(int[] list)
 { for(int i = 0; i < list.length; i++)
  { list[i]++;
  }
 }

 public static void printList(int[] list)
 { System.out.println("index, value");
  for(int i = 0; i < list.length; i++)
  { System.out.println(i + ", " + list[i]);
  }
 }



}