Recursion Part 7: Permutations Using Backtracking Explained with Java | ABC Example with Code

🔁 #Recursion #Backtracking #PermutationsInJava #JavaRecursion #DSA #LearnCoding #StringPermutations 🔁

Welcome to Recursion Part 7 of our Java DSA Series, where we dive deep into solving the Permutation Problem using Recursion and Backtracking! 🚀
This video is perfect for anyone trying to understand how backtracking works and how it can be applied to generate all permutations of a string.

📌 What’s covered in this video:

What is Backtracking, and how does it relate to recursion?

Step-by-step explanation of the recursive logic to generate permutations

How to swap characters, restore original state, and avoid repetition

Full working code to find all permutations of a string

Dry-run example with "ABC" to show how recursive calls work internally

How the backtracking mechanism ensures all combinations are explored and original state is restored

Time complexity overview and when to use this approach

🧠 Key Concepts Explained:

Recursive decision trees

Swapping and restoring positions (core of backtracking)

Base case logic for complete permutation

Understanding recursion call stack behavior

Difference between combinations and permutations

📚 Example Walkthrough:

Input: "ABC"

Output:

objectivec
Copy
Edit
ABC
ACB
BAC
BCA
CAB
CBA
🎯 This technique is frequently asked in coding interviews and helps you build a strong foundation in both recursion and backtracking, which are key to solving complex problems like Sudoku, N-Queens, and more!

👇 Let us know in the comments if you want a video on permutations with duplicates or generating permutations of arrays next!

🔁 #PermutationsUsingBacktracking #JavaPermutation #DSAJava #BacktrackingExplained #RecursionTutorial #CodingForBeginners #LearnJava 🔁

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Видео Recursion Part 7: Permutations Using Backtracking Explained with Java | ABC Example with Code канала Salesforce by Sachdeva