[LeetCode] N-ary Tree Level Order Traversal N叉树层序遍历
Givenann-arytree,returnthelevelordertraversalofitsnodes'values.(ie,fromlefttoright,levelbylevel).Forexample,givena3-arytree:Weshouldreturnitslevelordertraversal:[[1],[3,2,4],[5,6]]Note:Thedepthofthetr