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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define what an inversion is.
💡 Hint: Think about how two people can rank the same items differently.
Question 2
Easy
Why is the brute force method considered inefficient?
💡 Hint: Consider how the number of comparisons grows as items increase.
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 an inversion in ranking?
- A pair of items in correct order
- A pair of items that are swapped
- A pair of items that are out of order
💡 Hint: Think about pairs that don't follow the expected order.
Question 2
True or False: The brute force method has a time complexity of O(n log n).
- True
- False
💡 Hint: Consider the efficiency of different methods.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You have two rankings, R1 = [3, 1, 4, 2] and R2 = [4, 3, 2, 1]. Calculate how many inversions exist and detail the method used.
💡 Hint: Count all misordered pairs.
Question 2
Create an algorithm to efficiently count inversions in an array of size n, and analyze its time complexity.
💡 Hint: Think about merging sorted arrays.
Challenge and get performance evaluation