Day 45: Solving LeetCode Coding Problems | First Unique Character In A String | 150 Days Challenge

Day 45: Solving LeetCode Coding Problems | First Unique Character In A String Problem Solution | 150 Days Coding Challenge by Gaurav Pandey

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Welcome to Day 45 of the 150 Days Coding Challenge by Gaurav Pandey! In this video, we solve the popular LeetCode problem – First Unique Character in a String, which is frequently asked in FAANG interviews and top product-based company coding rounds. This is a must-practice string problem for anyone preparing for placements, technical interviews, or coding assessments in 2025.
We walk through the problem explanation, step-by-step solution, and optimized Python code implementation while focusing on time complexity, space complexity, and interview approach. Whether you're preparing for DSA, coding interviews, or solving LeetCode problems daily, this video will help strengthen your problem-solving skills.

Ideal For:

1. LeetCode daily challenge 2025
2. String problems in DSA
3. FAANG placement preparation
4. First unique character problem solution
5. Coding interview preparation 2025
6. Python DSA for beginners
7. 150 days coding challenge Gaurav Pandey

Stay till the end for best practices, tips to avoid common mistakes, and coding interview insights. Like, share, comment your doubts, and subscribe for more such daily LeetCode solutions and coding prep content!
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