LeetCode 1009 – Complement of Base 10 Integer | Bit Manipulation Trick Explained (O(logN) Solution)

Описание: In this video, we solve LeetCode 1009 – Complement of Base 10 Integer using a clean and efficient Bit Manipulation approach.

💡 Instead of converting to string or manually flipping bits, we build a smart bitmask and compute the complement in O(log N) time.

🔎 What You’ll Learn:
What “complement” really means in binary
How to construct a bitmask dynamically
Why handling leading zeros is important
Optimized bit manipulation approach
Edge case: when n = 0

🧠 Approach Covered:
Convert number to binary (conceptually)
Create mask with all 1s of same length
XOR number with mask to get complement

⏱ Time Complexity:
O(log N)

📦 Space Complexity:
O(1)

Perfect for:
Beginners learning Bit Manipulation
Coding Interview Preparation
Daily LeetCode Practice
FAANG Interview Prep

#LeetCode #BitManipulation #CodingInterview #DailyLeetCode #DSA #InterviewPreparation #Binary #Programmer #TechYouTube