/// <summary>
/// Determines whether a Set object is a subset of the specified collection
/// </summary>
/// <param name="other">The collection to compare to the current Set object</param>
/// <returns>True if the Set object is a subset of other or false, if isn't.</returns>
public bool SubsetWith(CustomSet <T> other)
{
if (other == null)
{
throw new ArgumentNullException(nameof(other));
}
for (int i = 0; i < Count; i++)
{
if (!other._container.Contains(_container[i]))
{
return(false);
}
}
return(true);
}
/// <summary>
/// Modifies the current Set to contain all elements that are present in itself, the specified collection, or both
/// </summary>
/// <param name="other">The collection to compare to the current Set</param>
public void UnionWith(CustomSet <T> other)
{
if (other == null)
{
throw new ArgumentNullException(nameof(other));
}
var resultSet = _container;
for (int i = 0; i < other.Count; i++)
{
if (!resultSet.Contains(other._container[i]))
{
resultSet = new T[Count + 1];
Array.Copy(_container, 0, resultSet, 0, Count);
resultSet[Count] = other._container[i];
_container = resultSet;
}
}
}
/// <summary>
/// Removes all elements in the specified collection from the current Set object
/// </summary>
/// <param name="other">The collection of items to remove from the Set object</param>
public void DifferenceWith(CustomSet <T> other)
{
if (other == null)
{
throw new ArgumentNullException(nameof(other));
}
int countOfResultSet = 0;
var resultSet = new T[countOfResultSet];
for (int i = 0; i < Count; i++)
{
if (!other._container.Contains(_container[i]))
{
var newResultSet = new T[countOfResultSet + 1];
Array.Copy(resultSet, 0, newResultSet, 0, countOfResultSet);
newResultSet[countOfResultSet] = _container[i];
resultSet = newResultSet;
countOfResultSet++;
}
}
_container = resultSet;
}
