Reverse a Number || Java || 3- Methods || Most asked Question in Interviews

Published: 04 June 2025
on channel: Scalier

🎯 Welcome to Scale 1 of the "Scales" DSA Series!

In this Video, we tackle a classic yet essential problem: Reversing a number in Java, using not just one, but three different methods:
✅ Using Loops and Modulus
✅ Using StringBuilder
✅ Using Recursion
Each method is explained with clear logic, real-world examples, time complexity, and when to use what — perfect for Java beginners, interview prep, and DSA revision.

🧠 Programming Language: Java
📈 Difficulty: Beginner (Scale 1)
🎯 Focus: Logic Building + Fundamental Problem Solving

📚 Example Problem:
Input: 1234
Output: 4321

🗣️ Comment below:
Which method did you like the most — Loop, String, or Recursion?

⏱️ Timestamps:
00:00 – Introduction
00:29 – Code Begins!
01:45 – Method -1
06:13 – Method -2
07:18 – Method -3
09:00 –Conclusion

🔥 This video is part of the "Scales" Series, a structured 7-level DSA course designed to take you from beginner to advanced — for FREE.

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