LeetCode Que - 387 First Unique Character скачать в хорошем качестве

LeetCode Que - 387 First Unique Character

🔤 LeetCode 387 | First Unique Character in a String | Hash Map Explained In this video, we solve LeetCode Question 387: First Unique Character in a String using an efficient hash map / frequency counting approach. This problem is commonly asked in coding interviews and is perfect for understanding string processing and hashing concepts. ✅ What you’ll learn in this video: How to find the first non-repeating character in a string Using frequency arrays / hash maps efficiently Step-by-step dry run explanation Time and space complexity analysis Interview edge cases ⚡ Approach Used: Technique: Hashing / Frequency Count Time Complexity: O(n) Space Complexity: O(1) (constant, 26 letters) 🧠 Concepts Covered Strings Hash Maps Character frequency counting Interview problem-solving strategy 💻 Code Languages C++ Java Python 🎯 Who should watch this? LeetCode beginners DSA & coding interview aspirants Anyone struggling with string problems 👍 If this video helped you, don’t forget to LIKE, SHARE, and SUBSCRIBE for more LeetCode solutions and DSA explanations. 💬 Comment below if you want more string-based problems explained next! #LeetCode387 #FirstUniqueCharacter #StringProblems #DSA #CodingInterview #LeetCodeSolutions #HashMap