![LeetCode 437. Path Sum III [Solution + Code Explained ]](https://i.ytimg.com/vi/x87RihNvRaY/mqdefault.jpg)
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Last Updated: September 22, 2026
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This video is a solution to Leet code CORRECTION: TC is O(n^2), since from every node we are triggering a new pathSum_a(), which traverses tree rooted at that ... neetcode.io/ - A better way to prepare for Coding Interviews Discord: discord.gg/ddjKRXPqtk Twitter: ... 0:00 Reading the problem 1:39 Solution and diagram 4:42 Coding. Please note time complexity is O(n^2). One of the most frequently asked coding interview questions on Arrays in companies ... Source code: github.com/HUANGXUANKUN/
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