Leetcode103_Binary-tree-zigzag-level-order-traversal

Original title:

https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal/

 

Ideas, if not start, first understand the breadth-first traversal of a binary tree BSF:

https://www.cnblogs.com/Jomini/p/12032020.html

 

Answer:

https://blog.csdn.net/qq_39313597/article/details/89669927