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Which data structure is used to implement a hash table?
A. Array
B. Linked List
C. Tree
D. Graph
Answer: Array
What is the time complexity of deleting an element from a priority queue implemented using a binary heap?
A. O(log n)
B. O(n)
C. O(1)
D. O(n log n)
Answer: O(log n)
Which of the following algorithms is used to solve the traveling salesman problem?
A. Approximation Algorithms
B. Greedy Algorithm
C. Dynamic Programming
D. Divide and Conquer
Answer: Dynamic Programming
Which data structure is used for implementing a circular buffer?
A. Array
B. Linked List
C. Queue
D. Stack
Answer: Array
What is the time complexity of finding the height of a binary tree with `n` nodes?
A. O(n)
B. O(log n)
C. O(n log n)
D. O(1)
Answer: O(n)
Which algorithm is used to find the longest common prefix in a set of strings?
A. Trie Data Structure
B. Binary Search
C. Divide and Conquer
D. Dynamic Programming
Answer: Trie Data Structure
What is the time complexity of accessing an element in an array?
A. O(1)
B. O(n)
C. O(log n)
D. O(n log n)
Answer: O(1)
Which data structure is used to implement a graph?
A. Adjacency List
B. Array
C. Stack
D. Queue
Answer: Adjacency List
What is the average-case time complexity of bubble sort?
A. O(n^2)
B. O(n log n)
C. O(n)
D. O(log n)
Answer: O(n^2)