void addBefore(T val)

Makes a new node from the given value and before it after the current node

Parameter

val - The value to add before the current node

Example

LinkedList<int> list = {3, 4, 5, 6, 7};
list.moveCurrentRight();
list.moveCurrentRight();
//Current is now at the element 5
list.addBefore(10);
//list now contains 3, 4, 10, 5, 6, 7