LC 1888 - Minimum Flips to Make Binary String Alternating | Sliding Window O(n) | LeetCode Explained

#leetcode #slidingwindows #algorithm #dsa #faangpreparation
In this video, we solve the LeetCode problem:

“Leetcode 1888 : Minimum Number of Flips to Make the Binary String Alternating”

We use a Sliding Window approach to achieve:
✅ O(n) Time Complexity
✅ O(1) Space Complexity
This problem looks simple at first, but the key insight is handling rotations efficiently and comparing against both possible alternating patterns.

🧠 What You’ll Learn:
How to think in terms of two alternating patterns: 010101... and 101010...
Why doubling the string helps in rotation problems
How sliding window helps avoid recomputation
How to track mismatches efficiently
How to optimize to constant space

💡 Key Concepts Covered:
Sliding Window Technique
String Rotation Handling
Greedy Pattern Matching
Optimized One-Pass Solution

⏱ Complexity:
Time: O(n)
Space: O(1)

If you're preparing for coding interviews or solving daily LeetCode problems, this video will help you strengthen your pattern recognition + sliding window skills.

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Видео LC 1888 - Minimum Flips to Make Binary String Alternating | Sliding Window O(n) | LeetCode Explained канала Ujjal Das