Экзаменационное задание Билет 13

Verkhoturov.cs

using System;
using System.Collections.Generic;

namespace Exam
{
    abstract class Rodent
    {
        public string TypeName { get; private set; }
        public int NumOfTeeth { get; private set; }
        public float? TailLength { get; private set; }
        public float? NoseLength { get; private set; }

        public Rodent(string typeName, int numOfTeeth, float? tailLength,
            float? noseLength)
        {
            TypeName = typeName;
            NumOfTeeth = numOfTeeth;
            TailLength = tailLength;
            NoseLength = noseLength;
        }
    }

    class RodentChild1 : Rodent
    {
        public RodentChild1(int numOfTeeth, float tailLength,
            float noseLength) :
            base("Шикотанская полевка", numOfTeeth, tailLength, noseLength)
        {
        }
    }

    class RodentChild2 : Rodent
    {
        public RodentChild2(int numOfTeeth) :
            base("Тушканчик-прыгун", numOfTeeth, null, null)
        {
        }
    }

    class RodentChild3 : Rodent
    {
        public int Age { get; private set; }
        public float MustacheLength { get; private set; }

        public RodentChild3(int numOfTeeth, float tailLength, float noseLength,
            int age, float mustacheLength) :
            base("Тувинская полевка", numOfTeeth, tailLength, noseLength)
        {
            Age = age;
            MustacheLength = mustacheLength;
        }
    }

    class Cat
    {
        public string Name { get; }
        public List<Rodent> SpaceForRodents { get; private set; }

        public Cat(string name = "Дина")
        {
            Name = name;
            SpaceForRodents = new List<Rodent>();
        }

        public bool CanCatch(Rodent rodent)
        {
            if (rodent.NumOfTeeth <= 5)
                return false;
            if (rodent.TailLength is not null && rodent.TailLength < 4)
                return false;
            if (rodent.NoseLength is not null && rodent.NoseLength <= 1)
                return false;
            return true;
        }

        public List<Rodent> CatchGroup(List<Rodent> rodents)
        {
            var remainingRodents = new List<Rodent>();
            var iterations = rodents.Count;
            for (int _ = 0; _ < iterations; _++)
            {
                // favourite rodent
                var rodent = rodents.Find(rodent => rodent is RodentChild1);
                // any rodent
                rodent ??= rodents[0];
                if (!CanCatch(rodent))
                {
                    remainingRodents.Add(rodent);
                    rodents.Remove(rodent);
                    continue;
                }

                if (rodent is RodentChild1) rodents.Remove(rodent);
                else if (rodent is RodentChild2 || rodent is RodentChild3)
                {
                    SpaceForRodents.Add(rodent);
                    rodents.Remove(rodent);
                }
            }

            return remainingRodents;
        }
    }
}