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What are the basic operations of a stack?

• Add, Remove, Check, and Clear

• Insert, Delete, View, and Count

• The basic operations of a stack are Push, Pop, Peek, and IsEmpty.

• Enqueue, Dequeue, Top, and IsFull

How do you implement a stack using an array?

• A stack can only be implemented using linked lists.

• You can only perform enqueue and dequeue operations on a stack.

• A stack requires a fixed size and cannot grow dynamically.

• A stack can be implemented using an array by maintaining an index for the top element and providing push, pop, and peek operations.

What is the time complexity of push and pop operations in a stack?

• O(1)

• O(log n)

• O(n)

• O(n^2)

Can you explain a real-world application of stacks?

• Web browser history management.

• Data encryption techniques

• File storage management

• Task scheduling in operating systems

What happens during a stack overflow?

• A stack overflow occurs when the memory is completely freed up.

• A stack overflow happens when the call stack exceeds its allocated size, often due to deep recursion or excessive function calls.

• A stack overflow is caused by insufficient disk space.

• A stack overflow happens when the CPU runs out of power.

What is stack underflow and when does it occur?

• Stack underflow occurs when an item is added to a full stack.

• Stack underflow is the condition that occurs when trying to pop an item from an empty stack.

• Stack underflow is when the stack size exceeds its limit.

• Stack underflow happens when the top item is removed from a non-empty stack.

How can you implement a stack using linked lists?

• Implement a stack using a queue to handle push and pop operations.

• Create a stack by using a simple variable to hold the top element.

• Use an array to store elements and manage operations with a fixed size.

• Implement a stack using a linked list by creating a Node class for elements and a Stack class to manage push, pop, and peek operations.

What are the differences between a stack and a queue?

• Both stack and queue use LIFO.

• A stack allows random access; a queue does not.

• A stack uses LIFO; a queue uses FIFO.

• A stack uses FIFO; a queue uses LIFO.

In which scenarios would you prefer using a stack over other data structures?

• Use a stack for random access

• Use a stack for LIFO operations, function calls, undo features, and backtracking.

• Use a stack for sorting data

• Use a stack for FIFO operations

How can recursion be related to stack operations?

• Recursion eliminates the need for stack memory.

• Recursion is a method to avoid using loops.

• Recursion uses the call stack to manage function calls and returns, similar to stack operations.

• Stack operations are unrelated to function calls.