/// <summary>
/// Intersection operation
/// </summary>
/// <param name="otherSet"></param>
/// <returns></returns>
public SetUniversal <T> Intersection(SetUniversal <T> otherSet)
{
//return new SetUniversal<T>(container.Intersect(otherSet));
var result = new SetUniversal <T>();
SetUniversal <T> big;
SetUniversal <T> small;
if (Count > otherSet.Count)
{
big = this;
small = otherSet;
}
else
{
big = otherSet;
small = this;
}
foreach (var item1 in small.container)
{
foreach (var item2 in big.container)
{
if (item1.Equals(item2))
{
result.Add(item1);
}
break;
}
}
return(result);
}
/// <summary>
/// Difference operation
/// </summary>
/// <param name="otherSet"></param>
/// <returns></returns>
public SetUniversal <T> Difference(SetUniversal <T> otherSet)
{
//return new SetUniversal<T>(container.Except(otherSet.container));
var result = new SetUniversal <T>(container);
foreach (var item in otherSet.container)
{
result.Remove(item);
}
return(result);
}
/// <summary>
/// Union operation
/// </summary>
/// <param name="otherSet"></param>
/// <returns></returns>
public SetUniversal <T> Union(SetUniversal <T> otherSet)
{
//return new SetUniversal<T>(container.Union(otherSet));
var result = new SetUniversal <T>();
foreach (var item in container)
{
result.Add(item);
}
foreach (var item in otherSet.container)
{
result.Add(item);
}
return(result);
}
/// <summary>
/// Subset operation
/// </summary>
/// <param name="otherSet"></param>
/// <returns></returns>
public bool Subset(SetUniversal <T> otherSet)
{
//return otherSet.container.All(i => container.Contains(i));
foreach (var item1 in otherSet.container)
{
var equals = false;
foreach (var item2 in container)
{
if (item1.Equals(item2))
{
equals = true;
break;
}
}
if (!equals)
{
return(false);
}
}
return(true);
}
