/*

    Write a method that returns the total number of occurences of a specied string from

        a predefined list of strings.

    RESULTS:

        hello | Total number of occurences: 4

        hi | Total number of occurences: 2

        bonjour | Total number of occurences: 1

        goodbye | Total number of occurences: 0

*/

​

using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        var listOfStrings = new List<string>

        {

            "hello",

            "hi",

            "hello",

            "hello",

            "hi",

            "bonjour",

            "hello"

        };      

        Console.WriteLine("hello | Total number of occurences: " + NumberOfOccurences(listOfStrings, "hello")); // Expected: 4

        Console.WriteLine("hi | Total number of occurences: " + NumberOfOccurences(listOfStrings, "hi")); // Expected: 2

        Console.WriteLine("bonjour | Total number of occurences: " + NumberOfOccurences(listOfStrings, "bonjour")); // Expected: 1

        Console.WriteLine("goodbye | Total number of occurences: " + NumberOfOccurences(listOfStrings, "goodbye")); // Expected: 0

    }

    private static int NumberOfOccurences(List<string> listOfStrings, string inputString)

    {

        return listOfStrings.Where(x => x == inputString).Count();

    }   

}