-----stack写法也要了解，看答案吧 https://leetcode.com/problems/binary-tree-paths/solution/ ----- ...

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There are three main ways to traverse a binary ... prefer recursion for simplicity unless the tree is large, where iterative approaches with stacks or queues are better. Modularize code for ...

In this paper we propose a new non-recursive algorithm for in-order binary search trees that is both efficient and easy to understand. The implementation of this new algorithm was done in Java and the ...