public bool Equals(CustomQueue <T> x, CustomQueue <T> y)
{
if (ReferenceEquals(x, null) && ReferenceEquals(y, null))
{
return(true);
}
if (ReferenceEquals(x, null) || ReferenceEquals(y, null))
{
return(false);
}
return(x.Count == y.Count && x.All(item => y.Contains(item, EqualityComparer <T> .Default)));
}