In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. It can have between 1 and 2h nodes inclusive at the last level h. 链接:http://leetcode.com/problems/count-complete-tree-nodes/ 题解: ...
Given a complete binary tree, count the number of nodes. Definition of a complete binary tree fromWikipedia: In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. It can have between 1 and 2hn...
public int countNodes(TreeNode root) { if (root == null) { return 0; } //因为当前树是 complete binary tree //所以可以通过从最左边和从最右边得到的高度判断当前是否是 perfect binary tree TreeNode left = root; int h1 = 0; while (left != null) { h1++; left = left.left; } TreeNo...
Given a complete binary tree, count the number of nodes. Definition of a complete binary tree from Wikipedia: In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. It can have between 1 and 2h...
In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. It can have between 1 and 2hnodes inclusive at the last level h. 思路: 满二叉树每层结点数目是2^(h-1),共2^h-1。利用上述定理,递归求...
In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. It can have between 1 and 2hnodes inclusive at the last level h. 1 /** 2 * Definition for a binary tree node. ...
Given a complete binary tree, count the number of nodes. Definition of a complete binary tree from Wikipedia:In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. It can have between 1 and 2h...
leetcode[222] Count Complete Tree Nodes Given a complete binary tree, count the number of nodes. Note: Definition of a complete binary tree from Wikipedia: In a complete binary tree every level, except possibly the last, is c...
5. Complete Java Program 6. Conclusion If you want to practice data structure and algorithm programs, you can go through 100+ Java coding interview questions. 1. Introduction In this post, we will see how to count leaf nodes in a binary tree in Java. Understanding how to count leaf nodes...
Can you solve this real interview question? Count Complete Tree Nodes - Given the root of a complete binary tree, return the number of the nodes in the tree. According to Wikipedia [http://en.wikipedia.org/wiki/Binary_tree#Types_of_binary_trees], every