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存量题库数据更新
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@@ -6,16 +6,16 @@
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"boundTopicId": null,
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"title": "Tree Node",
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"titleSlug": "tree-node",
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"content": "<p>Table: <code>Tree</code></p>\n\n<pre>\n+-------------+------+\n| Column Name | Type |\n+-------------+------+\n| id | int |\n| p_id | int |\n+-------------+------+\nid is the primary key column for this table.\nEach row of this table contains information about the id of a node and the id of its parent node in a tree.\nThe given structure is always a valid tree.\n</pre>\n\n<p> </p>\n\n<p>Each node in the tree can be one of three types:</p>\n\n<ul>\n\t<li><strong>"Leaf"</strong>: if the node is a leaf node.</li>\n\t<li><strong>"Root"</strong>: if the node is the root of the tree.</li>\n\t<li><strong>"Inner"</strong>: If the node is neither a leaf node nor a root node.</li>\n</ul>\n\n<p>Write an SQL query to report the type of each node in the tree.</p>\n\n<p>Return the result table <strong>ordered</strong> by <code>id</code> <strong>in ascending order</strong>.</p>\n\n<p>The query result format is in the following example.</p>\n\n<p> </p>\n<p><strong>Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/10/22/tree1.jpg\" style=\"width: 304px; height: 224px;\" />\n<pre>\n<strong>Input:</strong> \nTree table:\n+----+------+\n| id | p_id |\n+----+------+\n| 1 | null |\n| 2 | 1 |\n| 3 | 1 |\n| 4 | 2 |\n| 5 | 2 |\n+----+------+\n<strong>Output:</strong> \n+----+-------+\n| id | type |\n+----+-------+\n| 1 | Root |\n| 2 | Inner |\n| 3 | Leaf |\n| 4 | Leaf |\n| 5 | Leaf |\n+----+-------+\n<strong>Explanation:</strong> \nNode 1 is the root node because its parent node is null and it has child nodes 2 and 3.\nNode 2 is an inner node because it has parent node 1 and child node 4 and 5.\nNodes 3, 4, and 5 are leaf nodes because they have parent nodes and they do not have child nodes.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/10/22/tree2.jpg\" style=\"width: 64px; height: 65px;\" />\n<pre>\n<strong>Input:</strong> \nTree table:\n+----+------+\n| id | p_id |\n+----+------+\n| 1 | null |\n+----+------+\n<strong>Output:</strong> \n+----+-------+\n| id | type |\n+----+-------+\n| 1 | Root |\n+----+-------+\n<strong>Explanation:</strong> If there is only one node on the tree, you only need to output its root attributes.\n</pre>\n",
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"content": "<p>Table: <code>Tree</code></p>\n\n<pre>\n+-------------+------+\n| Column Name | Type |\n+-------------+------+\n| id | int |\n| p_id | int |\n+-------------+------+\nid is the column with unique values for this table.\nEach row of this table contains information about the id of a node and the id of its parent node in a tree.\nThe given structure is always a valid tree.\n</pre>\n\n<p> </p>\n\n<p>Each node in the tree can be one of three types:</p>\n\n<ul>\n\t<li><strong>"Leaf"</strong>: if the node is a leaf node.</li>\n\t<li><strong>"Root"</strong>: if the node is the root of the tree.</li>\n\t<li><strong>"Inner"</strong>: If the node is neither a leaf node nor a root node.</li>\n</ul>\n\n<p>Write a solution to report the type of each node in the tree.</p>\n\n<p>Return the result table in <strong>any order</strong>.</p>\n\n<p>The result format is in the following example.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/10/22/tree1.jpg\" style=\"width: 304px; height: 224px;\" />\n<pre>\n<strong>Input:</strong> \nTree table:\n+----+------+\n| id | p_id |\n+----+------+\n| 1 | null |\n| 2 | 1 |\n| 3 | 1 |\n| 4 | 2 |\n| 5 | 2 |\n+----+------+\n<strong>Output:</strong> \n+----+-------+\n| id | type |\n+----+-------+\n| 1 | Root |\n| 2 | Inner |\n| 3 | Leaf |\n| 4 | Leaf |\n| 5 | Leaf |\n+----+-------+\n<strong>Explanation:</strong> \nNode 1 is the root node because its parent node is null and it has child nodes 2 and 3.\nNode 2 is an inner node because it has parent node 1 and child node 4 and 5.\nNodes 3, 4, and 5 are leaf nodes because they have parent nodes and they do not have child nodes.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/10/22/tree2.jpg\" style=\"width: 64px; height: 65px;\" />\n<pre>\n<strong>Input:</strong> \nTree table:\n+----+------+\n| id | p_id |\n+----+------+\n| 1 | null |\n+----+------+\n<strong>Output:</strong> \n+----+-------+\n| id | type |\n+----+-------+\n| 1 | Root |\n+----+-------+\n<strong>Explanation:</strong> If there is only one node on the tree, you only need to output its root attributes.\n</pre>\n",
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"translatedTitle": null,
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"translatedContent": null,
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"isPaidOnly": false,
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"difficulty": "Medium",
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"likes": 381,
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"dislikes": 32,
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"likes": 1182,
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"dislikes": 124,
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"isLiked": null,
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"similarQuestions": "[]",
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"exampleTestcases": "{\"headers\": {\"Tree\": [\"id\", \"p_id\"]}, \"rows\": {\"Tree\": [[1,null],[2,1],[3,1],[4,2],[5,2]]}}\n{\"headers\": {\"Tree\": [\"id\", \"p_id\"]}, \"rows\": {\"Tree\": [[1,null]]}}",
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"exampleTestcases": "{\"headers\":{\"Tree\":[\"id\",\"p_id\"]},\"rows\":{\"Tree\":[[1,null],[2,1],[3,1],[4,2],[5,2]]}}\n{\"headers\":{\"Tree\":[\"id\",\"p_id\"]},\"rows\":{\"Tree\":[[1,null]]}}",
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"categoryTitle": "Database",
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"contributors": [],
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"topicTags": [
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@@ -45,23 +45,35 @@
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"langSlug": "oraclesql",
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"code": "/* Write your PL/SQL query statement below */\n",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Pandas",
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"langSlug": "pythondata",
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"code": "import pandas as pd\n\ndef tree_node(tree: pd.DataFrame) -> pd.DataFrame:\n ",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "PostgreSQL",
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"langSlug": "postgresql",
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"code": "-- Write your PostgreSQL query statement below\n",
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"__typename": "CodeSnippetNode"
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}
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],
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"stats": "{\"totalAccepted\": \"46.4K\", \"totalSubmission\": \"64.3K\", \"totalAcceptedRaw\": 46436, \"totalSubmissionRaw\": 64263, \"acRate\": \"72.3%\"}",
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"stats": "{\"totalAccepted\": \"143.3K\", \"totalSubmission\": \"200.3K\", \"totalAcceptedRaw\": 143280, \"totalSubmissionRaw\": 200267, \"acRate\": \"71.5%\"}",
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"hints": [
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"You can judge the node type by querying whether the node's id shows up in p_id column and whether the node's p_id is null."
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],
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"solution": {
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"id": "201",
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"canSeeDetail": true,
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"paidOnly": false,
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"canSeeDetail": false,
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"paidOnly": true,
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"hasVideoSolution": false,
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"paidOnlyVideo": true,
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"__typename": "ArticleNode"
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},
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"status": null,
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"sampleTestCase": "{\"headers\": {\"Tree\": [\"id\", \"p_id\"]}, \"rows\": {\"Tree\": [[1,null],[2,1],[3,1],[4,2],[5,2]]}}",
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"metaData": "{\n \"mysql\": [\n \"Create table If Not Exists Tree (id int, p_id int)\"\n ],\n \"mssql\": [\n \"Create table Tree (id int, p_id int)\"\n ],\n \"oraclesql\": [\n \"Create table Tree (id int, p_id int)\"\n ],\n \"database\": true\n}",
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"sampleTestCase": "{\"headers\":{\"Tree\":[\"id\",\"p_id\"]},\"rows\":{\"Tree\":[[1,null],[2,1],[3,1],[4,2],[5,2]]}}",
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"metaData": "{\"mysql\": [\"Create table If Not Exists Tree (id int, p_id int)\"], \"mssql\": [\"Create table Tree (id int, p_id int)\"], \"oraclesql\": [\"Create table Tree (id int, p_id int)\"], \"database\": true, \"name\": \"tree_node\", \"pythondata\": [\"Tree = pd.DataFrame([], columns=['id', 'p_id']).astype({'id':'Int64', 'p_id':'Int64'})\"], \"postgresql\": [\"\\nCreate table If Not Exists Tree (id int, p_id int)\"], \"database_schema\": {\"Tree\": {\"id\": \"INT\", \"p_id\": \"INT\"}}}",
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"judgerAvailable": true,
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"judgeType": "large",
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"mysqlSchemas": [
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@@ -76,7 +88,7 @@
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"enableRunCode": true,
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"enableTestMode": false,
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"enableDebugger": false,
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"envInfo": "{\"mysql\": [\"MySQL\", \"<p><code>MySQL 8.0</code>.</p>\"], \"mssql\": [\"MS SQL Server\", \"<p><code>mssql server 2019</code>.</p>\"], \"oraclesql\": [\"Oracle\", \"<p><code>Oracle Sql 11.2</code>.</p>\"]}",
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"envInfo": "{\"mysql\": [\"MySQL\", \"<p><code>MySQL 8.0</code>.</p>\"], \"mssql\": [\"MS SQL Server\", \"<p><code>mssql server 2019</code>.</p>\"], \"oraclesql\": [\"Oracle\", \"<p><code>Oracle Sql 11.2</code>.</p>\"], \"pythondata\": [\"Pandas\", \"<p>Python 3.10 with Pandas 2.0.2 and NumPy 1.25.0</p>\"], \"postgresql\": [\"PostgreSQL\", \"<p>PostgreSQL 16</p>\"]}",
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"libraryUrl": null,
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"adminUrl": null,
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"challengeQuestion": null,
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