TreeNode node = root.find(42); int position = node.getPosition();
LinkedListlist = new LinkedList (); int index = list.indexOf(node); int position = node.getPosition();
int[] array = {1, 2, 3, 4, 5, 6}; int index = Arrays.binarySearch(array, 4); int position = Node.getPosition(index);In terms of library, Node.getPosition() is likely included in the standard Java libraries for data structures, such as java.util.LinkedList or java.util.TreeSet. However, it could also be part of a third-party library like Apache Commons or Guava.