private static DenseSet <int> ParseDenseSet(string text)
{
text = text.Trim();
// Empty string means empty set
if (text.Length == 0)
{
return(new());
}
// Split by Union and parse intervals
var intervalParts = text.Split('U');
var intervals = intervalParts.Select(ParseInterval);
// Construct the dense set
var result = new DenseSet <int>();
foreach (var iv in intervals)
{
result.Add(iv);
}
// Check, if the constructed set is indeed the specified one
Assert.True(intervals.SequenceEqual(result));
return(result);
}
private static void AssertEquals(DenseSet <int> a, DenseSet <int> b)
{
// Same intervals
Assert.True(a.SequenceEqual(b));
// Set-equality
Assert.True(a.SetEquals(b));
Assert.True(b.SetEquals(a));
// Subset-ness
Assert.True(a.IsSubsetOf(b));
Assert.True(b.IsSubsetOf(a));
// Proper subset-ness
Assert.False(a.IsProperSubsetOf(b));
Assert.False(b.IsProperSubsetOf(a));
// Superset-ness
Assert.True(a.IsSupersetOf(b));
Assert.True(b.IsSupersetOf(a));
// Proper superset-ness
Assert.False(a.IsProperSupersetOf(b));
Assert.False(b.IsProperSupersetOf(a));
}
