1#include <iostream>2#include <vector>3#include <algorithm>4#include <queue>5#include <stack>6#include <string>7#include <fstream>8#include 9usingnamespacestd;1011structnode {12intdata;13structnode *left, *right;14node() : data(0), left(NULL), right(NULL) { }15node(intd) : data(...
When we get true from both child tree, the current node is the lowest common ancestor. Attention that if the current node is the given node and get true from either child tree, it is the lowest common ancestor itself. Code /** * Definition for a binary tree node. * type TreeNode str...
Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. 百度百科中最近公共祖先的定义为:“对于有根树 T 的两个结点 p、q,最近公共祖先表示为一个结点 x,满足 x 是 p、q 的祖先且 x 的深度尽可能大(一个节点也可以是它自己的祖先)。” According to the def...
一、题目大意 给定一个二叉搜索树, 找到该树中两个指定节点的最近公共祖先。 百度百科中最近公共祖先的定义为:“对于有根树 T 的两个结点 p、q,最近公共祖先表示为一个结点 x,满足 x 是 p、q 的祖先且 x 的深度尽可能大(一个节点也可以是它自己的祖先)。” 例如,给定如下二叉搜索树: root = [6,2,8...
236. Lowest Common Ancestor of a Binary Tree 题目 Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to thedefinition of LCA on Wikipedia: “The lowest common ancestor is defined between two nodes p and q as the lowest node in T that...
236. Lowest Common Ancestor of a Binary Tree 235. Lowest Common Ancestor of a Binary Search Tree 二叉搜索树的最低公共祖先(难) Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to thedefinition of LCA on Wikipedia: “The lowest common ...
Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to thedefinition of LCA on Wikipedia: “The lowest common ancestor is defined between two nodes p and q as the lowest node in T that has both p and q as descendants (where we allow...
Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to thedefinition of LCA on Wikipedia: “The lowest common ancestor is defined between two nodes p and q as the lowest node in T that has both p and q as descendants (where we allow...
Given the root and two nodes in a Binary Tree. Find the lowest common ancestor(LCA) of the two nodes. The lowest common ancestor is the node with largest depth which is the ancestor of both nodes. Example For the following binary tree: ...
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to thedefinition of LCA on Wikipedia: “The lowest common ancestor is defined between two nodes v and w as the lowest node in T that has both v and w as descendants (wh...