Learn how to implement popular data structures and algorithms in our next Python project with hands-on examples.

Python for Programmers

Data structures and algorithms are among the most fundamental concepts of computer science. This module is a detailed review of some of the most common data structures and algorithms, such as stack, linked lists, doubly linked lists, binary trees, binary search trees, and so on. With implementation details, thorough explanations, and hands-on coding exercises, we’ll gain the confidence to solve any problem related to our project.

Data Structures and Algorithms in Python

In Python, you can reverse a string very easily. For example, 

input_str = "Educative"
print(input_str[::-1])

However, if you are required to reverse a string using a stack, you can make use of the following algorithm illustrated in the slides below:

# Algorithm

Isn't the algorithm pretty straightforward? We push all the characters of the string onto the stack, and due to the *First-In, Last-Out* property of stack, we get all the characters in reverse order when we pop them off the stack. 


Now all that is left for us is to code the algorithm shown above. Let's do it!

The stack implementation from the first lesson of this chapter has been provided to you in the file `stack.py`. Check out the code below and feel free to play around with it:

This lesson teaches us how to reverse a string using a stack in Python. 

Reverse String

This lesson teaches us how to reverse a string using a stack in Python.

Built-in Data Structures

Stack

Singly Linked Lists

Circular Linked Lists

Doubly Linked Lists

Arrays

Binary Trees

Binary Search Trees

Binary Search

Recursion

String Processing

Conclusion

Reverse String

Algorithm