Which operation on a stack is used to retrieve the top element without removing it?
A. Pop
B. Push
C. Peek
D. Size
Answer: Option C
A. Pop
B. Push
C. Peek
D. Size
Answer: Option C
What is the time complexity of push operation in a stack implemented using an array?
A. O(1)
B. O(n)
C. O(log n)
D. O(n log n)
What is the stack's behavior when it's described as LIFO?
A. Last In First Out
B. Last In Last Out
C. First In First Out
D. First In Last Out
How can you implement a stack using a linked list?
A. By using a singly linked list
B. By using a doubly linked list
C. By using a circular linked list
D. All of the above
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