Algorithms quiz

Test your Algorithms knowledge with a free interactive quiz — 50 questions with answers and explanations. No signup needed to play.

Why does the stability of a sort matter in real applications?

1. Why does the stability of a sort matter in real applications?
2. Two algorithms both have time complexity `O(n)`. Which statement is most useful in practice?
3. When we say an algorithm is "correct", we mean:
4. Binary search has what time complexity, and what is its precondition?
5. What is a loop invariant?
6. Quicksort's average vs worst-case time complexity is:
7. Which sort has best-case O(n) when the array is already sorted, while still being a simple comparison sort?
8. What is the worst-case time complexity of bubble sort?
9. A recursive algorithm requires what to terminate?
10. What is the time complexity of linear search on an unsorted array of n elements?
11. Divide and conquer is an algorithmic paradigm that:
12. The "two pointers" technique typically applies when:

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