//Checks if parameter exists in the tree.
public bool exists(int number)
{
if (this.number == number)
{
return(true);
}
if (left != null)
{
if (left.exists(number))
{
return(true);
}
}
if (right != null)
{
if (right.exists(number))
{
return(true);
}
}
return(false);
}
/**
* Returns true if the number is present as a node in the tree
*/
public bool exists(int number)
{
return(root.exists(number));
}
