1//Recursive C program for level order traversal of Binary Tree2#include <stdio.h>3#include <stdlib.h>45structnode6{7intdata;8structnode *left;9structnode *right;10};1112structnode* newNode(intdata)13{14structn
* int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * };*/classSolution {public: vector<vector<int>> levelOrder(TreeNode*root) { vector<vector<int> >ret;if(!root)returnret; vector<int>tmp_ret; deque<TreeNode *>currLevel...
vector<int> inorderTraversal(TreeNode* root) { vector<int> vec; if(root == NULL)return vec; inorder(root,vec); return vec; } }; 递归 class Solution { public: void inorder(TreeNode* root, vector<int> & vec) { if(root -> left != NULL) { inorder(root -> left,vec); } vec...
This C Program Build Binary Tree if Inorder or Postorder Traversal as Input. Here is source code of the C Program to Build Binary Tree if Inorder or Postorder Traversal as Input. The C program is successfully compiled and run on a Linux system. The program output is also shown below. ...
Binary Tree Level Order Traversal(二叉树的层次遍历) HoneyMoose iSharkFly - 鲨鱼君 来自专栏 · Java 描述给出一棵二叉树,返回其节点值的层次遍历(逐层从左往右访问)样例给一棵二叉树 {3,9,20,#,#,15,7}:3 / \ 9 20 / \ 15 7返回他的分层遍历结果:[ [3], [9,20], [15,7] ]挑战挑战1...
Traverse the right sub tree of root. Note:Preorder traversal is also known as NLR traversal. Algorithm: Algorithm preorder(t) /*t is a binary tree. Each node of t has three fields: lchild, data, and rchild.*/ { If t! =0 then { Visit(t); Preorder(t->lchild); Preorder(t->rc...
If we are given a binary tree and we need to perform a vertical order traversal, that means we will be processing the nodes of the binary tree from left to right. Suppose we have a tree such as the one given below. If we traverse the tree in vertical order and print the nodes then...
Given binary tree [3,9,20,null,null,15,7], 3 / \ 9 20 / \ 15 7 return its bottom-up level order traversal as: [[15,7],[9,20],[3]] 二叉树的层次遍历,不过需要保持每一层的数据,可以通过vector配合队列实现,实现: classSolution{public:vector<vector<int>>levelOrderBottom(TreeNode*root...
*/classSolution{public List<Integer>preorderTraversal(TreeNode root){List<Integer>result=newLinkedList<>();TreeNode current=root;TreeNode prev=null;while(current!=null){if(current.left==null){result.add(current.val);current=current.right;}else{// has left, then find the rightmost of left su...
}publicvoidpostOrderTraversal() {this.root.postOrderTraversal(); }publicBinaryTree(Node root) {this.root =root; }publicNode getRoot() {returnroot; }publicvoidsetRoot(Node root) {this.root =root; } }publicstaticclassNode {privateintid;privateNode leftSubNode;privateNode rightSubNode;publicNo...