15.1.3 - Choosing a Pivot Element
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Practice Questions
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What is a pivot element in Quick sort?
💡 Hint: Think about how it helps divide the array.
Name one advantage Quick sort has over merge sort.
💡 Hint: Consider the space requirements.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of choosing a pivot in Quick sort?
💡 Hint: Recall how pivot partitioning works.
True or False: Quick sort requires additional memory for merging.
💡 Hint: Think about how merge sort works.
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Challenge Problems
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Given the array [4, 2, 7, 3, 1, 6], implement the Quick sort algorithm using the first element as the pivot. Show the partitioning steps and the recursive calls.
💡 Hint: Focus on how elements rearrange around the pivot and track recursive calls.
Analyze the impact of selecting the last element as the pivot in a descending sorted array. How does it affect Quick sort’s performance?
💡 Hint: Consider how you can balance the partitions to achieve better performance.
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