A deque is a data structure in which insertion and deletion can be performed at which ends?
Options
- A. Only at the front
- B. Only at the rear
- C. Both front and rear
- D. More than one of the above
- E. None of the above
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
C. Both front and rear
Detailed Explanation
A deque (double-ended queue) allows insertion and deletion at both the front and rear. It combines characteristics of queues and stacks. A deque can be implemented using arrays or linked lists. Two special forms are an input-restricted deque, where insertion is restricted to one end, and an output-restricted deque, where deletion is restricted to one end. These distinctions are useful for DSA MCQs.