Скачать или смотреть Add Digits LeetCode | Repeated Sum of Digits GeeksforGeeks | Easy Math Trick in C++

In this video, I explain LeetCode Add Digits and GeeksforGeeks Repeated Sum of Digits using C++ in the simplest and most beginner-friendly way.

You will learn:

✔ What is the repeated sum of digits
✔ Why the answer is always a single-digit
✔ How the digital root formula works
✔ Complete step-by-step logic
✔ C++ implementation
✔ Time & Space complexity
✔ Example dry runs and explanation

Both problems are very important for coding interviews, DSA practice, and beginner CP.

⭐ LeetCode Problem: Add Digits

You are given an integer num. Repeatedly add all its digits until the result becomes a single digit.
This video covers both Mathematical Trick and Loop solution.

⭐ GFG Problem: Repeated Sum of Digits

Same concept explained with clear examples and C++ code.

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