leetcode-problemset/leetcode/originData/tree-node.json

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        "question": {
            "questionId": "608",
            "questionFrontendId": "608",
            "boundTopicId": null,
            "title": "Tree Node",
            "titleSlug": "tree-node",
            "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>&nbsp;</p>\n\n<p>Each node in the tree can be one of three types:</p>\n\n<ul>\n\t<li><strong>&quot;Leaf&quot;</strong>: if the node is a leaf node.</li>\n\t<li><strong>&quot;Root&quot;</strong>: if the node is the root of the tree.</li>\n\t<li><strong>&quot;Inner&quot;</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>&nbsp;</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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            "difficulty": "Medium",
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            "dislikes": 124,
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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]]}}",
            "categoryTitle": "Database",
            "contributors": [],
            "topicTags": [
                {
                    "name": "Database",
                    "slug": "database",
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            "codeSnippets": [
                {
                    "lang": "MySQL",
                    "langSlug": "mysql",
                    "code": "# Write your MySQL query statement below\n",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "MS SQL Server",
                    "langSlug": "mssql",
                    "code": "/* Write your T-SQL query statement below */\n",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Oracle",
                    "langSlug": "oraclesql",
                    "code": "/* Write your PL/SQL query statement below */\n",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Pandas",
                    "langSlug": "pythondata",
                    "code": "import pandas as pd\n\ndef tree_node(tree: pd.DataFrame) -> pd.DataFrame:\n    ",
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                {
                    "lang": "PostgreSQL",
                    "langSlug": "postgresql",
                    "code": "-- Write your PostgreSQL query statement below\n",
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            ],
            "stats": "{\"totalAccepted\": \"143.3K\", \"totalSubmission\": \"200.3K\", \"totalAcceptedRaw\": 143280, \"totalSubmissionRaw\": 200267, \"acRate\": \"71.5%\"}",
            "hints": [
                "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."
            ],
            "solution": {
                "id": "201",
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            "status": null,
            "sampleTestCase": "{\"headers\":{\"Tree\":[\"id\",\"p_id\"]},\"rows\":{\"Tree\":[[1,null],[2,1],[3,1],[4,2],[5,2]]}}",
            "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\"}}}",
            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [
                "Create table If Not Exists Tree (id int, p_id int)",
                "Truncate table Tree",
                "insert into Tree (id, p_id) values ('1', 'None')",
                "insert into Tree (id, p_id) values ('2', '1')",
                "insert into Tree (id, p_id) values ('3', '1')",
                "insert into Tree (id, p_id) values ('4', '2')",
                "insert into Tree (id, p_id) values ('5', '2')"
            ],
            "enableRunCode": true,
            "enableTestMode": false,
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