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

using System;
using System.IO;

// Introduction to Software Testing
// Authors: Paul Ammann & Jeff Offutt
// Chapter 5, section 5.2, page 189

internal class findVal_class
{

    //Effects: If numbers null throw NullPointerException     
    //   else return LAST occurrence of val in numbers[]       
    //   If val not in numbers[] return -1                     
    public static int findVal(int[] numbers, int val)
    {
        int findVal = -1;

        for (int i = 0; i < numbers.Length; i++)
        {
            // for (int i=(0+1); i<numbers.length; i++)
            if (numbers[i] == val)
            {
                findVal = i;
            }
        }
        return (findVal);
    }

    public static void Main(string[] argv)
    { // Driver method for findVal
        // Read an array and an integerfrom standard input, call findVal()
        int integer = 0;
        int[] inArr = new int[argv.Length];
        if (argv.Length == 0)
        {
            Console.WriteLine("Usage: java findLast 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("Enter an integer you want to find: ");
        integer = N;

        Console.WriteLine("The LAST occurrence of " + integer + " is: " + findVal(inArr, integer));
    }

    // ====================================
    // Read (or choose) an integer
    private static int N
    {
        get
	{
	   int inputInt = 1;
	   string inStr;
    
	   try
	   {
		  inStr = Console.ReadLine();
		  inputInt = Convert.ToInt32(inStr);
	   }
	   catch (IOException)
	   {
		  Console.WriteLine("Could not read input, choosing 1.");
	   }
	   catch (FormatException)
	   {
		  Console.WriteLine("Entry must be a number, choosing 1.");
	   }
    
	   return (inputInt);
	}
    } // end getN

}