First Missing Positive | Leetcode 41 | DSA using python (telugu) | srkcodes
12Welcome to srkcodes, your ultimate destination for Telugu coding tutorials, Leetcode solutions, and Python programming for interviews! In this video, we solve Leetcode Question #41: First Missing Positive, a must-know problem for DSA preparation and coding interviews.
🔍 What You’ll Learn:
1️ ⃣ Brute Force Method: Check all positive integers sequentially until the missing one is found.
2️ ⃣ Optimal Method (O(n) time, O(1) space): Efficient in-place swapping for identifying the missing positive number.
3️ ⃣ Hashtable Approach: Use hashing to track presence of integers and find the smallest missing positive.
If you’re preparing for DSA interview questions or learning Python programming for interviews, this video provides multiple solutions to a frequently asked Leetcode problem.
👨 💻 Who Should Watch?
Beginners and intermediate coders learning Python programming for interviews.
Students preparing for DSA problems and coding interviews at top MNCs.
Anyone looking to improve their problem-solving skills with different approaches in DSA preparation.
💡 Key Takeaways:
Understand the difference between brute force, optimal, and hashtable solutions.
Learn how to solve problems in O(n) time with O(1) space in Python.
Gain confidence for your coding interviews by mastering complex problems with multiple approaches.
💬 Have a different approach or any questions? Comment below, and let’s discuss!
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🔗 External Study Resources for Deep Dive:
📝 Problem discussed in the video https://leetcode.com/problems/first-missing-positive/-m...
📚 Topic's ⬇ ️
1)searchttps://www.geeksforgeeks.org/searching-algorithms/rchi...
2)sorhttps://www.geeksforgeeks.org/sorting-algorithms/ting...
💡 LeetCode - sorting probhttps://leetcode.com/problem-list/sorting/st/sor...
💡 LeetCode - Top 25 algorithms every programmer shoulhttps://leetcode.com/discuss/interview-question/5193399/Top-25-Algorithms(Every-programmer-should-know)/intervie...