Data Structures and Algorithms The Complete Masterclass - Stack and Queue

The video tutorial covers the fundamental concepts of stack and queue data structures. It explains the principles of Last In First Out (LIFO) for stacks and First In First Out (FIFO) for queues. The tutorial discusses stack operations like push, pop, and peak, and queue operations like enqueue, dequeue, and peak. It also explores the implementation of these structures using arrays and linked lists, along with their complexity analysis.

What is the primary principle that a stack follows?

• First In First Out

• Last In First Out

• Round Robin

• First Come First Serve

Which operation in a stack allows you to view the top element without removing it?

• Pop

• Push

• Peek

• Enqueue

In a stack, what does the 'push' operation do?

• Adds an element to the top

• Removes the top element

• Adds an element to the bottom

• Views the top element

What real-life scenario is a queue most similar to?

• A set of nested boxes

• A deck of cards

• A line at a movie theater

• A stack of plates

Which operation in a queue removes the first element?

• Enqueue

• Dequeue

• Peek

• Push

What is the time complexity of accessing the last element in a stack implemented with an array?

• O(1)

• O(n)

• O(log n)

• O(n^2)

Why is a linked list preferred over an array for implementing a queue?

• Easier to implement

• Less memory usage

• Efficient dequeue operation

• Faster access to elements

What is the time complexity of the 'enqueue' operation in a queue implemented with a linked list?

• O(n)

• O(log n)

• O(n^2)

• O(1)

What additional functionality does a min stack provide?

• Tracks the average value

• Tracks the maximum value

• Tracks the sum of values

• Tracks the minimum value

Which of the following is NOT a basic operation of a stack?

• Peek

• Push

• Enqueue

• Pop