Yosgi is a software engineer in Auckland with 9+ years of experience across product engineering, frontend architecture, full-stack systems, digital twins, and AI platform work.
Time: 25 minutes The main idea is to use the stack. The difference from the ordinary level-order traversal is that the stack is cleared every time var connect = function(root) { if (!root) return null …
When traversing a binary tree in front, middle, or post-order, we use a stack to simplify operations. This is because they are all recursive structures of DFS, which means processing from bottom to …
A few years ago, the company needed to log in and register, and the estimated construction period was one month. As a result, the project became uncontrollable during the process, and it took almost …
