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1
What are some real-world applications of Stacks? (Undo/Redo, Browser History)
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2
What is a Queue? Explain FIFO.
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3
How do you implement a Min Stack (tracking minimum in O(1))?
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4
What are the basic operations of a Stack? (Push, Pop, Peek)
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5
What is a Priority Queue? How is it different from a normal Queue?
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6
How do you check for balanced parentheses using a Stack?
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7
What is the difference between a Blocking Queue and a Non-Blocking Queue?
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8
What is a Stack? Explain LIFO.
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9
How does a Call Stack work in programming?
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10
What are the basic operations of a Queue? (Enqueue, Dequeue)
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11
What are some real-world applications of Queues? (Task scheduling, Printer spooling)
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12
How does a Priority Queue handle ties in priority? (Stability)
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13
What is a Deque (Double-Ended Queue)?
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14
What is a Circular Queue? Why is it needed?
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15
How do you implement a Stack using two Queues?
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16
How do you implement a Queue using two Stacks?
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17
How do you evaluate a postfix expression using a Stack?
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18
Explain Monotonic Stack. What problems does it solve?
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1
Foundations
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Basics
Complexity Analysis
2
Linear structures
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Arrays and Strings
Linked Lists
Stacks and Queues
Hash Tables