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Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What happens when we delete a leaf node?
💡 Hint: Think about what it means for a node to have no children.
Question 2
Easy
If a node has one child, what do we do?
💡 Hint: What does promoting a child mean?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What happens when we delete a leaf node?
- It becomes an empty node
- It is promoted
- No action required
💡 Hint: Consider what a leaf node represents.
Question 2
True or False: A node with two children can be deleted directly.
- True
- False
💡 Hint: Think about the rules of binary search trees.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a binary search tree with nodes [30, 20, 40, 10, 25, 35, 50], delete node '20' and show the tree's new structure and describe the deletion process.
💡 Hint: Remember to replace with the maximum from the left.
Question 2
You have an unbalanced tree after multiple insertions of sorted values. If you need to delete the last node, discuss how you can keep the tree balanced afterward with examples.
💡 Hint: What methods do you recall for balancing trees?
Challenge and get performance evaluation