What is a good node in LeetCode 1448?

A node where no ancestor (root path) has a greater value — equals ok.

How to solve LeetCode 1448 good nodes binary tree?

DFS recurse with path max param: if node.val >= max, count++, update max for children.

Focuses recursion/trees best, but steps any code — try it free.

1.5 million LeetCode submissions on problem 1448 last year. Most miss the path-max trick. TraceLit changes that with line-by-line visuals.

theAIcatchup Apr 09, 2026 4 min read

Published by

Ship faster. Build smarter.

#DFS recursion #LeetCode 1448 #TraceLit #binary tree #good nodes #visual tracer

Get the best Developer Tools stories of the week in your inbox — no noise, no spam.

Originally reported by dev.to