Write a recursive private method called countOneChildLeafNodes to be considered within the BinaryTree class and has one parameter node of type Node

• Write a recursive private method called countOneChildLeafNodes to be considered within the BinaryTree class and has one parameter node of type Node and returns the number of nodes having one child or leaf nodes in the binary tree. This method is being called by a public method called countOneChildLeaf which has no parameter and returns the number of nodes

  solve
  

  Show transcribed image text

• 

  There are 2 steps to solve this one.

  Solution

  Share

  Step 1

  Here’s a simplified version of the code:

  public class BinaryTree<E> {
  private class Node {
  Node left;
  Node right;

  // Define your Node class here
  }

  private Node root; // Assuming you have a root node in your BinaryTree class

  public int countOneChildLeaf() {
  return countOneChildLeafNodes(root);
  }

  private int countOneChildLeafNodes(Node node) {
  // Implement your recursive logic here
  if (node == null) {
  return 0;
  }

  // Your logic to count nodes with one child or leaf nodes
  int count = 0;
  if ((node.left == null && node.right != null) || (node.left != null && node.right == null)) {
  count++;
  }

  // Recursive calls for left and right children
  count += countOneChildLeafNodes(node.left);
  count += countOneChildLeafNodes(node.right);

  return count;
}
}


  Explanation:

  1. Node Class: The Node class is declared as a private inner cl…