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Which technique is used to reduce the time complexity of range queries in arrays?
A. Prefix Sums
B. Sorting
C. Recursion
D. Greedy Algorithm
Answer: Prefix Sums
Which of the following algorithms is an example of a dynamic programming approach?
A. Floyd-Warshall Algorithm
B. Prim's Algorithm
C. Kruskal's Algorithm
D. Dijkstra's Algorithm
Answer: Floyd-Warshall Algorithm
In a heap, the element with the highest priority is always located at which position?
A. The root
B. A leaf node
C. The last element
D. Random position
Answer: The root
Which type of binary tree has a balance factor of -1, 0, or 1 at every node?
A. AVL Tree
B. Red-Black Tree
C. Heap
D. Binary Search Tree
Answer: AVL Tree
Which sorting algorithm is NOT comparison-based?
A. Radix Sort
B. Merge Sort
C. Quick Sort
D. Heap Sort
Answer: Radix Sort
Which data structure is best for storing hierarchical data?
A. Tree
B. Graph
C. Queue
D. Stack
Answer: Tree
In the Knapsack problem, which approach is typically more efficient: greedy or dynamic programming?
A. Dynamic Programming
B. Greedy Algorithm
C. Both are equally efficient
D. Neither
Answer: Dynamic Programming
What is the goal of a binary search?
A. To divide the search space by half
B. To check all elements sequentially
C. To create a priority queue
D. To build a binary tree
Answer: To divide the search space by half
What is the time complexity of searching in a hash table on average?
A. O(1)
B. O(n)
C. O(log n)
D. O(n log n)
Answer: O(1)