public void TestSetEqualsEdgeCase()
{
var equalityComparer = EqualityComparer <int> .Default;
Func <int, int> getHashCode = value => Math.Abs(value) < 5 ? 0 : 1;
var set = new TreeSet <int>(branchingFactor: 4, comparer: new SubsetHashCodeEqualityComparer <int>(equalityComparer, getHashCode));
set.UnionWith(new[] { 1, 3, 7, 9 });
Assert.False(set.SetEquals(new[] { 1, 4, 7, 9 }));
}
public bool Equals(TreeSet <T>?x, TreeSet <T>?y)
{
if (x is null)
{
return(y is null);
}
else if (y is null)
{
return(false);
}
if (x.Comparer.Equals(y.Comparer))
{
return(x.SetEquals(y));
}
bool found = false;
foreach (T item1 in x)
{
found = false;
foreach (T item2 in y)
{
if (_comparer.Equals(item1, item2))
{
found = true;
break;
}
}
if (!found)
{
return(false);
}
}
return(true);
}