Farm

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

namespace AlgorithmsRegularExam
{
	public class Farm
	{

        private string name;
        private List<Animal> animals;

        public Farm()
        {

        }

        public Farm(string name)
        {
            Name = name;
            Animals = new List<Animal>();
        }

        public string Name
        {
            get
            {
                return name;
            }
            set
            {
                name = value;
            }
        }

        public List<Animal> Animals
        {
            get
            {
                return animals;
            }
            set
            {
                animals = value;
            }
        }

        public void AddAnimal(string type, int weight)
        {
            Animal animal = new Animal(type, weight);
            Animals.Add(animal);
        }

        public double AverageWeight()
        {
            double sum = 0;
            int count = 0;
            foreach (Animal animal in Animals)
            {
                sum += animal.Weight;
                count++;
            }

            return sum / count;
        }

        public List<string> FilterAnimalsByWeight(int weight)
        {
            List<string> animals = new List<string>();
            foreach (Animal animal in Animals)
            {
                if (animal.Weight < weight)
                {
                    animals.Add(animal.Type);
                }
            }
            return animals;
        }

        public List<Animal> SortAscendingByType()
        {
            List<Animal> sorted = Animals.OrderBy(animal => animal.Type).ToList();
            Animals = sorted;
            return sorted;
        }

        public List<Animal> SortDescendingByWeight()
        {
            List<Animal> sorted = Animals.OrderByDescending(animal => animal.Weight).ToList();
            Animals = sorted;
            return sorted;
        }

        public bool CheckAnimalIsInFarm(string type)
        {
            foreach (Animal animal in Animals)
            {
                if (animal.Type == type)
                {
                    return true;
                }
            }

            return false;
        }

        public string[] ProvideInformationAboutAllAnimals()
        {
            List<string> infoList = new List<string>();
            foreach (Animal animal in Animals)
            {
                infoList.Add(animal.ToString());
            }
            return infoList.ToArray();
        }
    }
}