lastEven

Question :

Write a function named lastEven that returns the index of the last even value in its array argument. For example, lastEven will return 3 if the array is {3, 2, 5, 6, 7}, because that is the index of 6 which is the last even value in the array.

If the array has no even numbers, the function should return -1.

If you are programming in Java or C#, the function signature is

   int lastEven (int[ ] a)

If you are programming in C or C++, the function signature is

   int lastEven (int a[ ], int len) where len is the number of elements in a.

Solution :

  public static int lastEven(int [] a)

        {

            int lastIndex = 0;

            for (int i = a.Length - 1; i > 0;i-- )

            {

                if (a[i] % 2 == 0)

                {

                    lastIndex = i;

                    break;

                }

            }

            return lastIndex;

        }