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What is the average-case time complexity of insertion sort on an array?
A. O(n^2)
B. O(n log n)
C. O(n)
D. O(log n)
Answer: O(n^2)
Which algorithm is used for finding strongly connected components in a directed graph?
A. Kosaraju's Algorithm
B. Dijkstra's Algorithm
C. Kruskal's Algorithm
D. Prim's Algorithm
Answer: Kosaraju's Algorithm
Which traversal technique is used to visit all nodes in a binary tree using a depth-first approach?
A. Pre-Order Traversal
B. In-Order Traversal
C. Post-Order Traversal
D. Level-Order Traversal
Answer: Pre-Order Traversal
Which of the following is a dynamic programming technique for solving optimization problems?
A. Knapsack Problem
B. Merge Sort
C. Binary Search
D. Depth-First Search
Answer: Knapsack Problem
In which data structure is the ‘enqueue’ operation used?
A. Queue
B. Stack
C. Heap
D. Tree
Answer: Queue
What is the worst-case time complexity of heap sort?
A. O(n log n)
B. O(n^2)
C. O(n)
D. O(log n)
Answer: O(n log n)
Which algorithm is used to solve the problem of finding the maximum sum of a contiguous subarray?
A. Kadane's Algorithm
B. Divide and Conquer
C. Dynamic Programming
D. Greedy Algorithm
Answer: Kadane's Algorithm
What is the time complexity of the depth-first search algorithm on a graph with `V` vertices and `E` edges?
A. O(V + E)
B. O(V^2)
C. O(E log V)
D. O(V log V)
Answer: O(V + E)
In a priority queue implemented using a binary heap, what operation has O(1) time complexity?
A. Peek
B. Insert
C. Delete Min/Max
D. Heapify
Answer: Peek