Question

Write a method removeleaves that removes the leaves from a tree.

Answer 1

The removeLeaves method can be implemented in a recursive manner to remove the leaves of a tree by traversing the tree using a depth-first search algorithm.

Step-by-step explanation:

The removeLeaves method can be implemented in a recursive manner to remove the leaves of a tree. A leaf node is a node that does not have any child nodes. To remove the leaves, we can traverse the tree using a depth-first search algorithm and remove any node that is a leaf.

Here is the step-by-step implementation:

1. If the given tree is empty or has only one node (root), return null.
2. Recursively call the removeLeaves method on the left and right subtrees.
3. If the current node is a leaf (no left or right child), return null. Otherwise, return the current node.

By following this recursive approach, we can remove all the leaf nodes from the tree.