using System;

public class Program

{

    public static void Main()

    {

        WordClass wordClass = new WordClass(); 

        string[] words = wordClass.words;

        int wordsCount = words.Length;

        Console.WriteLine("Current dictionary of words:");

        for(int i = 0; i < wordsCount; i++)

        {

            Console.Write(words[i] + " ");

        }

        Console.WriteLine();

        string replay = "N";

        do 

        {

            Console.WriteLine("What word are we targeting to find the predecessor? "); 

            string targetWord = Console.ReadLine();

            WordClass.get_previous_word(targetWord, words, wordsCount);

            Console.WriteLine("Search again? (Y/N) ");

            replay = Console.ReadLine();

        } while (string.Equals(replay, "Y", StringComparison.InvariantCultureIgnoreCase));

    }

}

public class WordClass

{

    private readonly string[] _words = { "apple", "peanut butter", "interview", "monkey", "superhero", "interventions" }; 

    public string[] words {get{return _words;}}

    public static void get_previous_word(string pTargetWord, string[] ppUnsortedDictionary, int unsortedDictionaryWordCount)

    {

        string predecessor = "unavailable as the target word was not found.";

        Array.Sort(ppUnsortedDictionary);

        for (int index = 0; index < unsortedDictionaryWordCount; index++)

        {

            if (ppUnsortedDictionary[index] == pTargetWord)

            {

                if (index != 0)

                {

                    predecessor = ppUnsortedDictionary[index-1];

                    break;

                } else if (index == 0)

                {

                    predecessor = "unavailable as the target word was first in list";

                    break;

                }

            }

        }

        Console.WriteLine("**The predecessor to " + pTargetWord + " is " + predecessor);

    }

}