/*
 * Aresh Saharkhiz
 * saharkiz@gmail.com
 * Associate Professor / Mapua Institute of Technology / Philippines
 */

using System;

// Introduction to Software Testing
// Authors: Paul Ammann & Jeff Offutt
// Chapter 1, section 1.2, page 16

internal class lastZero_class
{

    public static int lastZero(int[] x)
    { //Effects: if x==null throw NullPointerException
        //   else return the index of the LAST 0 in x.
        //   Return -1 if 0 does not occur in x

        for (int i = 0; i < x.Length; i++)
        {
            if (x[i] == 0)
            {
                return i;
            }
        }
        return -1;
    }
    // test:  x=[0, 1, 0]              
    //        Expected = 2

    public static void Main(string[] argv)
    { // Driver method for lastZero
        // Read an array from standard input, call lastZero()
        int[] inArr = new int[argv.Length];
        if (argv.Length == 0)
        {
            Console.WriteLine("Usage: java lastZero v1 [v2] [v3] ... ");
            return;
        }

        for (int i = 0; i < argv.Length; i++)
        {
            try
            {
                inArr[i] = Convert.ToInt32(argv[i]);
            }
            catch (FormatException)
            {
                Console.WriteLine("Entry must be a integer, using 1.");
                inArr[i] = 1;
            }
        }

        Console.WriteLine("The last index of zero is: " + lastZero(inArr));
    }

}