Practice Implementing Stacks (35.3.2) - Sets, stacks, queues - Data Structures and Algorithms in Python
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Implementing Stacks

Practice - Implementing Stacks

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define what a stack is.

💡 Hint: Think about how plates are stacked.

Question 2 Easy

What operation do we use to add an item to a stack?

💡 Hint: What do you do to put another plate on top?

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does LIFO stand for?

Last-In-First-Out
Last-In-Fast-Out
Last-One-First-Out

💡 Hint: Think of stacking items.

Question 2

True or False: A stack can have duplicate elements.

True
False

💡 Hint: Consider how stacks are constructed.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Create a stack that can also track the maximum element. Implement push and pop methods accordingly.

💡 Hint: What will happen when you pop? How will you manage the max?

Challenge 2 Hard

Develop a solution using stacks to check for balanced parentheses in an expression.

💡 Hint: What does a balanced expression look like?

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Reference links

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