/*** Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * }*/classSolution {publicList<Double>averageOfLevels(TreeNode root) { List<Double> result =newArrayList<>();if(root==null)returnre...
1#Definition for a binary tree node.2#class TreeNode(object):3#def __init__(self, x):4#self.val = x5#self.left = None6#self.right = None78classSolution(object):9defaverageOfLevels(self, root):10"""11:type root: TreeNode12:rtype: List[float]13"""14levels = [[root]]#将要...
Average of Levels in Binary Tree 链接637. Average of Levels in Binary Tree 题意 给定非空二叉树,求出每一层数的平均值 思路 利用队列存储每一层的数,存完之后需要取出size,再循环求平均值。这样保证了循环的次数就是每一层的结点数。 代码......
leetcode专题—637. Average of Levels in Binary Tree 原文:https://leetcode.com/problems/average-of-levels-in-binary-tree/discuss/105107/Java-BFS-Solution 题目意思:求每一层节点值和的平均数。BFS,用队列存每一level的节点,在除以size...Leet...
Given a non-empty binary tree, return the average value of the nodes on each level in the form of an array. Example 1: Input: 3 / \ 9 20 / \ 15 7 Output: [3, 14.5, 11] Explanation: The average value of nodes on level 0 is 3, on level 1 is 14.5, and on level 2 is 11...
Given a non-empty binary tree, return the average value of the nodes on each level in the form of an array. Example 1: Input: 3 / \ 9 20 / \ 15 7 Output: [3, 14.5, 11] Explanation: The average value of nodes on level 0 is 3, on level 1 is 14.5, and on level 2 is 11...
leetcode Add to List 637. Average of Levels in Binary Tree,就是对二叉树每一层求平均值。开始想法用层次遍历,然而又不知道该点是在哪一层。所以要求没一点的深度,而通过先序遍历递归求没一点的深度的过程中。好像并不需要再去层次遍历,结果就已经很明显了。要注意l
* Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * }; */classSolution{public:vector<double>averageOfLevels(TreeNode*root){vector<int>count;vector<double>res;average...
Average of Levels in Binary Tree [思路]:获得树每一层的平均值,使用广度优先搜索。 那么使用方法: 广度优先 deque vector<double>averageOfLevels(TreeNode*root){vector<double>res;deque<TreeNode*>q;q.push_back(root);while(!q.empty()){doubletemp=0;ints=q.size();for(inti=0;ileft)q.push_...
Average Path Length refers to the average distance between any two nodes in a graph. It is a measure that helps to understand the structure and connectivity of the graph. The concept of Average Path Length is significant in various applications such as social networks, where it highlights the ...