How to Solve Python Coding Questions using Stack

An essential data type for Data Scientists and Soft Engineers in 2021

Python is a versatile script-based programming language with a wide application in Artificial Intelligence, Machine Learning, Deep Learning, and Soft Engineering. Its popularity benefits from the various Data Types that Python stores.

Dictionary is the natural choice if we have to store key and value pairs, as in today’s Question 5. String and list are a pair of twin sisters that come together and solve string manipulation questions. Set holds a unique position as it does not allow duplicates, a unique feature that allows us to identify the repetitive and non-repetitive items. Well, tuple is the least frequently asked data type in technical interviews. Last week, a senior Data Scientist posted a coding question on Twitter, which can be easily solved via tuple. However, a lot of candidates got tripped over. I’ll write another post on the topic soon.

Data Types play an essential part in Python programming! Being able to differentiate one from another is super important for solving interview questions. In today’s post, let’s shift gears to another essential data type called Stack.

In writing this blog post, I have spent countless hours selecting the following questions and rank them in a way that is easily understandable to new programmers. Each question builds up upon the previous ones. If possible, please solve the problems in sequence.

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