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LeetCode 3606 | Coupon Code Validator | Filtering & Custom Sorting Explained (Java)

In this video, we solve LeetCode 3606 – Coupon Code Validator step by step using Java.

👉 This video covers:
Clear problem explanation
Important observations
Step-by-step solution approach
Clean and optimized Java code

Perfect for interview preparation, LeetCode practice, and understanding custom sorting problems.

👍 If you find this helpful, don’t forget to like, comment, and subscribe!

Видео LeetCode 3606 | Coupon Code Validator | Filtering & Custom Sorting Explained (Java) канала Code Kage
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13 декабря 2025 г. 8:45:00
00:11:19
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