In today’s LeetCode Daily Challenge (Day 12), we solve 1266. Minimum Time Visiting All Points using a clean Greedy + Math approach.
Problem link: https://leetcode.com/problems/minimum-time-visiting-all-points/description/?envType=daily-question&envId=2026-01-12
The problem becomes very simple once we understand how diagonal movement works. Instead of simulating every move, we directly compute the minimum time using a key observation.
🔍 What’s covered in this video:
Understanding allowed moves (horizontal, vertical, diagonal)
Why diagonal moves are optimal
Deriving the formula max(|dx|, |dy|)
Step-by-step walkthrough with examples
Writing an optimal O(n) C++ solution
📊 Complexity discussed:
Time Complexity: O(n)
Space Complexity: O(1)
This is a great interview problem that tests observation and simplification, not brute force.
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