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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define the divide and conquer strategy in one sentence.
💡 Hint: Think about how to tackle a large task.
Question 2
Easy
What is an inversion in the context of rankings?
💡 Hint: Consider how preferences can differ between two people.
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 is the time complexity of the brute force method for counting inversions?
- O(n)
- O(n log n)
- O(n²)
💡 Hint: Consider how many comparisons are made.
Question 2
True or False: Merge sort can be modified to count inversions.
- True
- False
💡 Hint: Reflect on what happens when sorting two halves.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given the rankings [3, 1, 4, 2] and [1, 4, 2, 3], calculate the number of inversions and explain each step.
💡 Hint: Map each of the ranking pairs and see which are inverted.
Question 2
Describe how you would implement a counting inversions algorithm from scratch, including planning for edge cases.
💡 Hint: Think about how to handle empty or very small input lists effectively.
Challenge and get performance evaluation