Permutations (LeetCode 46) | Full solution with backtracking examples | Interview | Study Algorithms

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A very famous backtracking problem. Given an array of unique elements, find all the possible permutations. This video shows how to identify the logic which creates all different permutations. Once we know how to find permutations, we can map it to the backtracking algorithmic paradigm. The concept is super simplified using diagrams and visuals of state space tree. You will also find a dry-run of the code in JAVA.

The actual problem on LeetCode: https://leetcode.com/problems/permuta...

Chapters:
00:00 - Intro
01:13 - Understanding the problem
02:51 - Logic to find permutations
06:43 - Using Backtracking to find permutations
11:52 - Dry-run of Code
15:36 - Final Thoughts

📚 Links to topics I talk about in the video:
Brute Force Paradigm:    • Brute Force algorithms with real life exam...  
Backtracking:    • Backtracking made easy | Algorithmic Parad...  
Similar problem (Subsets):    • Subsets (LeetCode 78) | Full solution with...  
Other problems on LeetCode:    • Leetcode Solutions  

📘 A text based explanation is available at: https://studyalgorithms.com

Code on Github: https://github.com/nikoo28/java-solut...
Test-cases on Github: https://github.com/nikoo28/java-solut...

📖 Reference Books:
Starting Learn to Code: https://amzn.to/36pU0JO
Favorite book to understand algorithms: https://amzn.to/39w3YLS
Favorite book for data structures: https://amzn.to/3oAVBTk
Get started for interview preparation: https://amzn.to/39ysbkJ

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