Qfunny

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Which data structure uses LIFO order?

A Stack B Queue C Linked List D Tree

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What is the time complexity of binary search?

A O(log n) B O(n²) C O(n) D O(1)

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Which structure stores key-value pairs?

A Hash Map B Stack C Array D Queue

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What is the root of a binary tree?

A The first node at the top B The middle node C The last node D Any leaf node

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Which sorting algorithm has O(n log n) average complexity?

A Selection Sort B Bubble Sort C Merge Sort D Insertion Sort

Data Structures