public int RemoveAll(T element)
{
int firstOccurance = sortedElements.IndexOf(element);
int secondoccurance = sortedElements.LastIndexOf(element);
if (sortedElements.IndexOf(element) < 0)
{
return(0);
}
else
{
//Predicate<T> predicate = x => x.CompareTo(element) == 0;
this.elements.RemoveAll(x => x.CompareTo(element) == 0);
sortedElements.RemoveAllCopies(element);
reversedElements.RemoveAllCopies(element);
return(secondoccurance - firstOccurance + 1);
}
}