. - 力扣(LeetCode)给你二叉树的根节点 root ,返回它节点值的 前序 遍历。...[0, 100] 内 -100 <= Node.val <= 100 2.解答 前序遍历是一种二叉树遍历方式,按照“根-左-右”的顺序访问每个节点。...0 : TreeSize(root->left) + TreeSize(root->right) + 1; } 2.以先序遍历(Preorder Tra...
package datastructure.tree.leetcode; import java.util.ArrayList; import java.util.LinkedList; import java.util.List; import java.util.Queue; /** * @author roseduan * @time 2020/9/19 11:20 上午 * @description N叉树的层次遍历 */ public class NaryTreeLevelOrderTraversal { /** * 广度优先...
package leetcode import "container/list" //N叉树的前序遍历 //使用递归 func preorder(root *Node) []int { var res []int npreHelper(root, &res) return res } func npreHelper(node *Node, res *[]int) { if node == nil { return } *res = append(*res, node.Val) for _, child ...
nary_tree_postorder_traversal package leetcode import "container/list" //N叉树的后序遍历 //递归 func postorder(root *Node) []int { var res []int npostHelper(root, &res) return res } func npostHelper(node *Node, res *[]int) { if node == nil { return } for _, child := range...