LeetCode 274: H-Index | Python Solution | Sorting & Counting Approach
📝 In this video, I solve LeetCode's H-Index problem using sorting and counting techniques. The h-index measures a researcher's productivity and citation impact. #leetcode #sorting #arrays #pythonsolution
⏱️ **Time Complexity**: O(n log n) - dominated by the sorting operation
🗂️ **Space Complexity**: O(1) - constant extra space
Timestamps
00:00 - Understanding problem statement
00:46 - Using Brute force
01:49 - Brute Force - Big O Notation
02:16 - Using Sorting approach
04:13 - Sorting approach - Big O Notation
04:45 - Optimized solution - Using Counters
07:12 - Optimal solution - Big O Notation
07:53 - Python code walk-through
08:54 - Solution analysis - runtime + memory
🔑 **Key Concepts**:
Sorting algorithms
Binary search application
Understanding citation metrics
Array manipulation techniques
Counting sort optimization
💡 **Main Takeaways**:
How to approach problems requiring ranked metrics
Efficiently calculating bibliometric indices
Optimizing sorting-based solutions
Handling edge cases in citation counting
📚 **Related LeetCode Problems**:
LeetCode 275: H-Index II (Binary Search)
LeetCode 347: Top K Frequent Elements
LeetCode 451: Sort Characters By Frequency
LeetCode 692: Top K Frequent Words
👨💻 **Target Audience**: Software engineering candidates preparing for technical interviews, particularly those focused on algorithmic problem-solving with Python.
📋 **Prerequisites**: Basic understanding of arrays, sorting algorithms, and Python syntax.
Links
LeetCode problem: https://leetcode.com/problems/h-index/
Solution code: https://leetcode.com/problems/h-index...
🔔 If you found this tutorial helpful, please subscribe to the channel for weekly coding problems explained step-by-step! Drop your questions or alternative approaches in the comments section below. #codinginterviews #pythonprogramming #algorithmsandatastructures
Additional Tips
Emphasize the definition of h-index, as it's not intuitive for many viewers
Discuss the O(n) counting sort solution as a follow-up optimization
Explain why sorting in descending order simplifies the solution logic
On this page of the site you can watch the video online LeetCode 274: H-Index | Python Solution | Sorting & Counting Approach with a duration of hours minute second in good quality, which was uploaded by the user Code Scribbler 02 June 2025, share the link with friends and acquaintances, this video has already been watched 406 times on youtube and it was liked by 7 viewers. Enjoy your viewing!
