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Which data structure is used to implement a priority queue efficiently?
A. Binary Heap
B. Stack
C. Queue
D. Linked List
Answer: Binary Heap
Which technique is used to find the longest common subsequence of two sequences?
A. Dynamic Programming
B. Greedy Algorithm
C. Divide and Conquer
D. Backtracking
Answer: Dynamic Programming
Which algorithm is used to find the shortest path in a weighted graph with positive weights?
A. Dijkstra's Algorithm
B. Bellman-Ford Algorithm
C. Kruskal's Algorithm
D. Prim's Algorithm
Answer: Dijkstra's Algorithm
What is the average-case time complexity of merge sort?
A. O(n log n)
B. O(n^2)
C. O(n)
D. O(log n)
Answer: O(n log n)
What is the worst-case time complexity of quicksort?
A. O(n^2)
B. O(n log n)
C. O(n)
D. O(log n)
Answer: O(n^2)
Which of the following is a characteristic of a max-heap?
A. The parent node is greater than or equal to its children
B. The parent node is less than or equal to its children
C. The tree is always balanced
D. The left subtree is always smaller than the right subtree
Answer: The parent node is greater than or equal to its children
Which data structure can be used to implement a breadth-first search?
A. Queue
B. Stack
C. Heap
D. Linked List
Answer: Queue
In which data structure is the ‘pop’ operation used?
A. Stack
B. Queue
C. Priority Queue
D. Hash Table
Answer: Stack
What is the time complexity of searching for an element in an unsorted array?
A. O(n)
B. O(log n)
C. O(n log n)
D. O(1)
Answer: O(n)