Stacks & Queues in Data Structures 2023 📚

Stacks and Queues are a crucial part of Data Structures. They are commonly asked during coding interviews and are quite handy when it comes to solving certain type of questions. Learn more about Scaler: https://bit.ly/3xhe8bN

🔹 What are Stacks and Queues in Data Structure and Algorithm?
- Stack is a last in first out (lifo) linear data structure. Imagine stack in DS Algo as a pile of blocks. You can remove the block at the top quite easily. But if you have to remove the block at the end of the pile, you have to remove all the other blocks as well. Elements in Stack can be inserted or deleted only from one side. The insertion of an element into a stack is called push operation and the deletion of an element from the stack is called the pop operation.

- Queue is a first in first out (fifo) linear data structure. Elements in Queue can only be inserted and deleted from opposite sides. The insertion of an element in Queue is called as enqueue operation and the deletion of an element is referred to as an dequeue operation.

Learning Data Structures and Algorithms is non-negotiable since they help execute effective programs.

The following topics are covered in this video 👇🏼

0:00 - Introduction to Stacks and Queues
1:19 - What is a Stack?
4:50 - Operations on Stacks
9:09 - Applications of Stacks
12:13 - Implementation of Stack
48:40 - Queue in Data Structure
56:53 - Nearest Smaller Element Problem
1:05:36 - Largest Rectangle in Histogram Problem
1:25:18 - Sliding Window Maximum Problem



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