12.8 - Merging and Counting Inversions
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Practice Questions
Test your understanding with targeted questions
Define what an inversion is in ranking.
💡 Hint: Think about two items ranked differently.
What is the time complexity of the brute force method for counting inversions?
💡 Hint: Consider how many comparisons are made.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What condition defines an inversion in two ranking orders?
💡 Hint: Think about pairs and their comparisons.
Is counting inversions in a ranking system important for recommendation systems?
💡 Hint: Consider how recommendations are determined based on user preferences.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Given an array of movie rankings [4, 3, 2, 1], how many inversions does it contain? Illustrate your reasoning step by step.
💡 Hint: List and compare each possible pair.
Design an algorithm to count inversions in an array and analyze its time complexity.
💡 Hint: Focus on iterating through merged arrays to count crossing conditions.
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