757. Set Intersection Size At Least Two | Leetcode Daily - Python
🧋 Support the channel!
My Daily To Do: https://www.mydailytodo.com/
Buy Me A Boba: https://www.buymeaboba.com
✍️ My Planning Tools (Affiliate Links)
I use a tablet to sketch out data structures and logic before coding. Using these links helps support the channel at no extra cost to you!
Latest S-Pen Tablet: https://amzn.to/4nsgXRw
Great Budget Tablet: https://amzn.to/4ow4v3Y
In this video, we tackle LeetCode 757 "Set Intersection Size At Least Two", a challenging Hard problem involving interval scheduling and greedy algorithms. The goal is to find the smallest set of numbers such that every input interval contains at least two numbers from our set.
We break down the optimal greedy strategy: sorting the intervals based on start and end times, and then processing them backwards. By checking the "todo" requirements for each interval, we can greedily select points that maximize overlap with earlier intervals, keeping the total set size to a minimum. This tutorial walks through the logic step-by-step, explains the specific sorting criteria needed to handle sub-intervals, and analyzes the O(N^2) time complexity.
The main explanation uses Python, but full solution code is provided for Java, C++, and JavaScript as well.
Perfect for coding interview preparation and improving problem-solving skills.
👍 Like, Subscribe, and Comment! Let me know what problems you'd like to see solved.
Solution Link:
https://leetcode.com/problems/set-int...
#leetcode #python #algorithms #codinginterview #dailycoding