4.4
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@ -35,7 +35,7 @@ public interface ICollectionGenericObjects<T>
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/// </summary>
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/// <param name="obj">Добавляемый объект</param>
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/// <param name="position">Позиция</param>
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/// <returns>true - вставка прошла удачно, false - вставка неудалась</returns>
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/// <returns>true - вставка прошла удачно, false - вставка не удалась</returns>
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int Insert(T obj, int position);
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/// <summary>
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@ -28,61 +28,66 @@ public class MassiveGenericObjects<T> : ICollectionGenericObjects<T>
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public T? Get(int position)
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{
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if (position < 0 || position >= _collection.Length) return null;
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// TODO проверка позиции
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if (position >= _collection.Length || position < 0)
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{ return null; }
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return _collection[position];
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}
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public int Insert(T obj)
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{
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for (int i = 0; i < Count; i++)
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{// TODO вставка в свободное место набора
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int index = 0;
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while (index < _collection.Length)
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{
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if (_collection[i] == null)
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if (_collection[index] == null)
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{
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_collection[i] = obj;
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return i;
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_collection[index] = obj;
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return index;
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}
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index++;
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}
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return -1;
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}
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public int Insert(T obj, int position)
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{
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if (position < 0 || position >= Count)
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{
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return -1;
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}
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if (position >= _collection.Length || position < 0)
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{ return -1; }
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if (_collection[position] == null)
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{
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_collection[position] = obj;
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return position;
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}
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int index;
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for (int i = position + 1; i < Count; i++)
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for (index = position + 1; index < _collection.Length; ++index)
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{
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if (_collection[i] == null)
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if (_collection[index] == null)
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{
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_collection[i] = obj;
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return i;
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}
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}
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for (int i = position - 1; i >= 0; i--)
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{
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if (_collection[i] == null)
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{
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_collection[i] = obj;
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return i;
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_collection[position] = obj;
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return position;
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}
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}
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for (index = position - 1; index >= 0; --index)
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{
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if (_collection[index] == null)
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{
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_collection[position] = obj;
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return position;
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}
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}
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return -1;
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}
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public T? Remove(int position)
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{
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if (position < 0 || position >= Count)
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{
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return null;
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}
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// TODO проверка позиции
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// TODO удаление объекта из массива, присвоив элементу массива значение null
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if (position >= _collection.Length || position < 0)
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{ return null; }
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T? obj = _collection[position];
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_collection[position] = null;
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return obj;
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@ -210,7 +210,7 @@ public partial class FormBoatCollection : Form
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/// <param name="e"></param>
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private void buttonCollectionDel_Click(object sender, EventArgs e)
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{
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if (listBoxCollection.SelectedIndex < 0 || listBoxCollection.SelectedItems == null)
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if (listBoxCollection.SelectedIndex < 0 || listBoxCollection.SelectedItem == null)
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{
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MessageBox.Show("Коллекция не выбрана");
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return;
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