queryExample.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

namespace MCVE
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] friendlyChampionIds = {14};
            int[] enemyChampionIds = {};

            // This list includes the teams
            // 1. 22,55,14,15,62 vs 14,11,16,51,32
            // 2. 14,15,22,76,16 vs 61,78,94,11,25
            // 3. 22,11,61,59,42 vs 24,14,17,67,14

            //Input lists
            // friendlyChampionIds = {22} & enemyChampionIds = {32}; returns match 1; as 22 and 32 are on opposite teams
            // friendlyChampionIds = {22} & enemyChampionIds = {}; returns match 1 and 3; as 22 Id 22 is on either team
            // friendlyChampionIds = {55,15} & enemyChampionIds = {11,16,51}; returns match 1; as the team contains the ids
            // enemyChampionIds = {22,11,59} & friendlyTeamChampionIds = {}; returns match 3 as one team matches the ids given
            // each list of Ids need to exist on the opposite team
            var listOfMatches = GetListOfMatches();
            

            var fullMatchupMatches = listOfMatches
                .Where(q => q.Teams.Zip(new[] { friendlyChampionIds, enemyChampionIds }, (t, n) => n.All(nn => t.Players.All(x => friendlyChampionIds.Contains(x.ChampionId)))).All()
                            ||
                            q.Teams.Reverse().Zip(new[] { friendlyChampionIds, enemyChampionIds }, (t, n) => n.All(nn => t.Players.Contains(n))).All());

            Console.WriteLine("Hello World!");
        }


        public class Match
        {
            public IList<Team> Teams { get; set; } = new List<Team>();
        }

        public class Team
        {
            public IList<Player> Players { get; set; } = new List<Player>();
        }

        public class Player
        {
            public int ChampionId { get; set; }
        }
        
        public static IList<Match> GetListOfMatches()
        {
            IList<Match> matches = new List<Match>();
            
            var matchOne = new Match();
            matchOne.Teams.Add(new Team()
            {
                Players = new List<Player>()
                {
                    new Player() {ChampionId = 22},
                    new Player() {ChampionId = 55},
                    new Player() {ChampionId = 15},
                    new Player() {ChampionId = 76},
                    new Player() {ChampionId = 99},
                }
            });

            matchOne.Teams.Add(new Team()
            {
                Players = new List<Player>()
                {
                    new Player() {ChampionId = 61},
                    new Player() {ChampionId = 63},
                    new Player() {ChampionId = 19},
                    new Player() {ChampionId = 85},
                    new Player() {ChampionId = 92},
                }
            });

            matches.Add(matchOne);
            

            var matchTwo = new Match();
            matchTwo.Teams.Add(new Team()
            {
                Players = new List<Player>()
                {
                    new Player() {ChampionId = 22},
                    new Player() {ChampionId = 55},
                    new Player() {ChampionId = 15},
                    new Player() {ChampionId = 76},
                    new Player() {ChampionId = 99},
                }
            });

            matchTwo.Teams.Add(new Team()
            {
                Players = new List<Player>()
                {
                    new Player() {ChampionId = 22},
                    new Player() {ChampionId = 55},
                    new Player() {ChampionId = 15},
                    new Player() {ChampionId = 76},
                    new Player() {ChampionId = 99},
                }
            });
            matches.Add(matchTwo);


            var matchThree = new Match();
            matchThree.Teams.Add(new Team()
            {
                Players = new List<Player>()
                {
                    new Player() {ChampionId = 22},
                    new Player() {ChampionId = 55},
                    new Player() {ChampionId = 15},
                    new Player() {ChampionId = 76},
                    new Player() {ChampionId = 99},
                }
            });

            matchThree.Teams.Add(new Team()
            {
                Players = new List<Player>()
                {
                    new Player() {ChampionId = 22},
                    new Player() {ChampionId = 55},
                    new Player() {ChampionId = 15},
                    new Player() {ChampionId = 76},
                    new Player() {ChampionId = 99},
                }
            });
            matches.Add(matchThree);


            var matchFour = new Match();
            matchFour.Teams.Add(new Team()
            {
                Players = new List<Player>()
                {
                    new Player() {ChampionId = 52},
                    new Player() {ChampionId = 41},
                    new Player() {ChampionId = 15},
                    new Player() {ChampionId = 51},
                    new Player() {ChampionId = 17},
                }
            });

            matchFour.Teams.Add(new Team()
            {
                Players = new List<Player>()
                {
                    new Player() {ChampionId = 77},
                    new Player() {ChampionId = 36},
                    new Player() {ChampionId = 92},
                    new Player() {ChampionId = 41},
                    new Player() {ChampionId = 14},
                }
            });
            matches.Add(matchFour);

            return matches;

        }
    }
}