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using Cruiser.Exceptions;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics.Eventing.Reader;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Cruiser.Generics
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{
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/// <summary>
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/// Параметризованный набор объектов
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/// </summary>
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/// <typeparam name="T"></typeparam>
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internal class SetGeneric<T>
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where T : class
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{
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/// <summary>
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/// Список объектов, которые храним
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/// </summary>
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private readonly List<T?> _places;
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/// <summary>
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/// Количество объектов в списке
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/// </summary>
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public int Count => _places.Count;
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/// <summary>
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/// Максимальное количество объектов в списке
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/// </summary>
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private readonly int _maxCount;
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/// <summary>
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/// Конструктор
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/// </summary>
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/// <param name="count"></param>
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public SetGeneric(int count)
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{
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_maxCount = count;
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_places = new List<T?>(count);
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}
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/// <summary>
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/// Добавление объекта в набор
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/// </summary>
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/// <param name="cruiser">Добавляемый лайнер</param>
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/// <returns></returns>
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public bool Insert(T cruiser) //починил код, работал неправильно
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{
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if (_places.Count >= _maxCount)
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{
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throw new StorageOverflowException(_places.Count);
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}
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_places.Insert(0, cruiser);
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return true;
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}
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/// <summary>
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/// Удаление объекта из набора с конкретной позиции
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/// </summary>
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/// <param name="position"></param>
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/// <returns></returns>
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public bool Remove(int position)
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{
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if (position < 0 || position > _places.Count)
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{
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throw new CruiserNotFoundException(position);
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}
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_places[position] = null;
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return true;
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}
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/// <summary>
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/// Добавление объекта в набор на конкретную позицию
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/// </summary>
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/// <param name="cruiser">Добавляемый автомобиль</param>
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/// <param name="position">Позиция</param>
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/// <returns></returns>
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public bool Insert(T cruiser, int position) //починил код, работал неправильно
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{
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if (_places.Count >= _maxCount)
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{
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throw new StorageOverflowException(_places.Count);
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}
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if (position < 0 || position > _places.Count)
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{
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throw new CruiserNotFoundException(position);
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}
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_places.Insert(position, cruiser);
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return true;
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}
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public T? this[int position]
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{
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get
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{
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if (position < 0 || position > _maxCount)
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{ return null; }
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return _places[position];
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}
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set
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{
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if (position < 0 || position > _maxCount)
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return;
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_places[position] = value;
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}
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}
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public IEnumerable<T?> GetCruisers(int? maxCruisers = null)
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{
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for (int i = 0; i < _places.Count; ++i)
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{
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yield return _places[i];
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if (maxCruisers.HasValue && i == maxCruisers.Value)
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{
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yield break;
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}
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}
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}
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}
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}
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