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easy Solve on LeetCode Solve on LeetCode

Last edited: November 15, 2025

Problem
Examples
Solution
Video explanation
Method 1 - Naive
Intuition
Approach
Complexity
Method 2 — Sort by start time
Intuition
Approach
Code
Complexity
Method 3 — Sort by end time
Intuition
Approach
Code
Complexity
Method 4 — Sweep line (events)
Intuition
Approach
Code
Complexity

video explanation

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