mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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190 lines
28 KiB
JSON
190 lines
28 KiB
JSON
{
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"questionId": "1035",
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"questionFrontendId": "993",
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"categoryTitle": "Algorithms",
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"boundTopicId": 3004,
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"title": "Cousins in Binary Tree",
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"titleSlug": "cousins-in-binary-tree",
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"content": "<p>Given the <code>root</code> of a binary tree with unique values and the values of two different nodes of the tree <code>x</code> and <code>y</code>, return <code>true</code> <em>if the nodes corresponding to the values </em><code>x</code><em> and </em><code>y</code><em> in the tree are <strong>cousins</strong>, or </em><code>false</code><em> otherwise.</em></p>\n\n<p>Two nodes of a binary tree are <strong>cousins</strong> if they have the same depth with different parents.</p>\n\n<p>Note that in a binary tree, the root node is at the depth <code>0</code>, and children of each depth <code>k</code> node are at the depth <code>k + 1</code>.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/02/12/q1248-01.png\" style=\"width: 304px; height: 270px;\" />\n<pre>\n<strong>Input:</strong> root = [1,2,3,4], x = 4, y = 3\n<strong>Output:</strong> false\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/02/12/q1248-02.png\" style=\"width: 334px; height: 266px;\" />\n<pre>\n<strong>Input:</strong> root = [1,2,3,null,4,null,5], x = 5, y = 4\n<strong>Output:</strong> true\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/02/13/q1248-03.png\" style=\"width: 267px; height: 258px;\" />\n<pre>\n<strong>Input:</strong> root = [1,2,3,null,4], x = 2, y = 3\n<strong>Output:</strong> false\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li>The number of nodes in the tree is in the range <code>[2, 100]</code>.</li>\n\t<li><code>1 <= Node.val <= 100</code></li>\n\t<li>Each node has a <strong>unique</strong> value.</li>\n\t<li><code>x != y</code></li>\n\t<li><code>x</code> and <code>y</code> are exist in the tree.</li>\n</ul>\n",
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"translatedTitle": "二叉树的堂兄弟节点",
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"translatedContent": "<p>在二叉树中，根节点位于深度 <code>0</code> 处，每个深度为 <code>k</code> 的节点的子节点位于深度 <code>k+1</code> 处。</p>\n\n<p>如果二叉树的两个节点深度相同，但<strong> 父节点不同</strong> ，则它们是一对<em>堂兄弟节点</em>。</p>\n\n<p>我们给出了具有唯一值的二叉树的根节点 <code>root</code> ，以及树中两个不同节点的值 <code>x</code> 和 <code>y</code> 。</p>\n\n<p>只有与值 <code>x</code> 和 <code>y</code> 对应的节点是堂兄弟节点时，才返回 <code>true</code> 。否则，返回 <code>false</code>。</p>\n\n<p> </p>\n\n<p><strong>示例 1：<br />\n<img alt=\"\" src=\"https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2019/02/16/q1248-01.png\" style=\"height: 160px; width: 180px;\" /></strong></p>\n\n<pre>\n<strong>输入：</strong>root = [1,2,3,4], x = 4, y = 3\n<strong>输出：</strong>false\n</pre>\n\n<p><strong>示例 2：<br />\n<img alt=\"\" src=\"https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2019/02/16/q1248-02.png\" style=\"height: 160px; width: 201px;\" /></strong></p>\n\n<pre>\n<strong>输入：</strong>root = [1,2,3,null,4,null,5], x = 5, y = 4\n<strong>输出：</strong>true\n</pre>\n\n<p><strong>示例 3：</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2019/02/16/q1248-03.png\" style=\"height: 160px; width: 156px;\" /></strong></p>\n\n<pre>\n<strong>输入：</strong>root = [1,2,3,null,4], x = 2, y = 3\n<strong>输出：</strong>false</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li>二叉树的节点数介于 <code>2</code> 到 <code>100</code> 之间。</li>\n\t<li>每个节点的值都是唯一的、范围为 <code>1</code> 到 <code>100</code> 的整数。</li>\n</ul>\n\n<p> </p>\n",
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"code": "/**\n * Definition for a binary tree node.\n * public class TreeNode {\n * public int val;\n * public TreeNode left;\n * public TreeNode right;\n * public TreeNode(int val=0, TreeNode left=null, TreeNode right=null) {\n * this.val = val;\n * this.left = left;\n * this.right = right;\n * }\n * }\n */\npublic class Solution {\n public bool IsCousins(TreeNode root, int x, int y) {\n\n }\n}",
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