[LeetCode] N-ary Tree Level Order Traversal

1 · · Jan. 29, 2022, 3:51 a.m.
429. N-ary Tree Level Order Traversal Given an n-ary tree, return the level order traversal of its nodes’ values. Nary-Tree input serialization is represented in their level order traversal, each group of children is separated by the null value (See examples). ...