A-LevelComputer ScienceObject-Oriented ProgrammingMay/June 2025Paper 4 Q330 Marks
A program stores data in a binary tree that is designed using Object-Oriented Programming (OOP). The tree stores data in ascending numerical order, for example: [Diagram of a binary tree]. The class Node stores data about the nodes. NodeData : Integer stores the node's integer data LeftNode : Node stores the node that is stored to the left of the current node, or a null value if there is no node to the left RightNode : Node stores the node that is stored to the right of the current node, or a null value if there is no node to the right Constructor() initialises NodeData to its parameter value; initialises LeftNode and RightNode to a null value GetLeft() returns LeftNode GetRight() returns RightNode GetData() returns NodeData SetLeft() takes an object of type Node as a parameter and stores it in LeftNode SetRight() takes an object of type Node as a parameter and stores it in RightNode
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