Given a binary tree, return the tilt of the whole tree. The tilt of a tree node is defined as the absolute difference between the sum of all left subtree node values and the sum of all right subtree node values. Null node has tilt 0. The tilt of the
使用递归打印二叉树的左视图 java package com.li.jinRiTouTiao; public class PrintLeftView { static class TreeNode{ TreeNode left; TreeNode right; int val; public TreeNode(int val) { this.val = val; } } int layer=0; //定义一个全局变量,最大层数layer, depth是递归的深度. public void pri
二叉树遍历(Java实现) 主要是二叉树的遍历,包括递归遍历和非递归遍历 import java.util.ArrayDeque; import java.util.ArrayList; import java.util.List; import java.util.Queue; public class BinaryNode<T> { /** * 泛型BinaryNode类 */ public T item; public BinaryNode<T> left,right;/
Given a binary tree, return the tilt of the whole tree. The tilt of a tree node is defined as the absolute difference between the sum of all left subtree node values and the sum of all right subtree node values. Null node has tilt 0. The tilt of the
100. Same Tree Total Accepted: 127501 Total Submissions: 294584 Difficulty: Easy Given two binary trees, write a function to check if they are equal or not. Two binary trees are considered equal if they are structurally identical and the nodes have t
题目:二叉树的深度 考点:知识迁移能力 题目描述:输入一棵二叉树,求该树的深度.从根结点到叶结点依次经过的结点(含根.叶结点)形成树的一条路径,最长路径的长度为树的深度. 牛客网上的剑指offer题,我按从简单到难的排序来做了 思路:从根节点出发, 查询左子树的深度 , 获取右子树的深度,比较一下,取大的,再加一 .就是整个二叉树的深度 法一:递归 /** public class TreeNode { int val = 0; TreeNode left = null; TreeNode
二叉树的宽度 思路:层序遍历的时候,记录每层的节点数量,最后取记录中的最多的数量. 代码实现: public int solution(TreeNode node){ LinkedList<TreeNode> queue=new LinkedList<>(); queue.offer(node); int ans=1; TreeNode temNode=null; while (!queue.isEmpty()){ ans=Math.max(ans,queue.size()); i
1.创建树的节点 public class Node { public Object data; //存储数据 public Node leftChild; //左子树指针 public Node rightChild; //右字树指针 } 2.二叉树的实现 public class BinTree { Node node; public BinTree() { } public BinTree(Node node) { node.leftChild = node.leftChild; node
一.定义二叉树节点类 package tree; public class Node<E> { public E data; public Node<E> lnode; public Node<E> rnode; public Node(){} public Node(E data) { this.data = data; } } 通过泛型(generics)定义了一个公有的节点类,包含一个数据域 data,以及两个引用域 lnode 和 rnode.构造函数提供有参和