// COPY THIS WHOLE TEXT AND PASTE OVER THE TEXT IN THE IDE ONLINE

// BASIC EXERCISE

// AUTHOR: ALA BROWN

using System;

using System.Collections.Generic;

using System.Linq;

​

// ** SETUP FOR .NET FIDDLE **

// Make sure Language is: C#

// Project Type: Console

// Compiler: .NET 4.7.2

// NuGet Packages: "Leave this blank nothing needed"

// Auto Run: No (This means you will have to check your answer by clicking the run button on top)

// ** SETUP FOR .NET FIDDLE **

//Here are 2 string lists with team names

//List<string> listA = new List<string>() { "OREGON", "STANDFORD", "CALIFORNIA", "UTAH", "USC", "ND", "NAVY", "BYU", "BSU", "UTSTATE", "WYOMING", "WEBERSTATE", "SLCC", "WESTMINISTER" };

//List<string> listB = new List<string>() { "BYU", "UTAH", "UTSTATE", "WEBERSTATE", "OREGON", "SLCC" };

// 1. If a team in listA also appears in listB how would you remove it from listA.

// example: SLCC appears on both lists so you would remove SLCC from listA

// 2. How would you remove teams from listA that appears in listB and the string value does not contain the letter “a” this is not case sensitive. So “a” or “A” in a string value would be removed.

// example: “SLCC” appears on both lists and the string value does not contain the letter “a” so “SLCC” would remain in listA.

//There are multiple ways to solve this. Try to figure out the simplest way to do this. Try to figure out the most efficient way to do this.

public class Program

{

    public static void Main()

    {

        List<string> listA = new List<string>()

        {"OREGON", "STANDFORD", "CALIFORNIA", "UTAH", "USC", "ND", "NAVY", "BYU", "BSU", "UTSTATE", "WYOMING", "WEBERSTATE", "SLCC", "WESTMINISTER"};

        List<string> listB = new List<string>()

        {"BYU", "UTAH", "UTSTATE", "WEBERSTATE", "OREGON", "SLCC"};

        FilterAListFromB(listA, listB);

        FilterAListFromBAndFilterOutA(listA, listB);

    }

​

    public static void FilterAListFromB(List<string> listA, List<string> listB)

    {

        Console.WriteLine("**FilterAListFromB**");

        Console.WriteLine("");

        foreach (var team in listA)

        {

            // discard items from listB

            if (!listB.Contains(team))

                Console.WriteLine(team);

        }

​

        Console.WriteLine("");

    }

​

    public static void FilterAListFromBAndFilterOutA(List<string> listA, List<string> listB)

    {

        Console.WriteLine("**FilterAListFromBAndFilterOutA**");

        Console.WriteLine("");

        foreach (var team in listA)

        {

            // discard items from listB -AND- check teams with the letter "A"

            if (!listB.Contains(team) && !team.ToLower().Contains('a'))

                Console.WriteLine(team);

        }

​

        Console.WriteLine("");

    }

}

// Answer 1: "STANDFORD", "CALIFORNIA", "USC", "ND", "NAVY", "BSU", "WYOMING", "WESTMINISTER"

// Answer 2: "USC", "ND", "BSU", "WYOMING", "WESTMINISTER"

​