mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-11 02:58:13 +08:00
198 lines
32 KiB
JSON
198 lines
32 KiB
JSON
{
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"data": {
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"question": {
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"questionId": "1000295",
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"questionFrontendId": "剑指 Offer II 043",
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"categoryTitle": "LCOF2",
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"boundTopicId": 910289,
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"title": "往完全二叉树添加节点",
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"titleSlug": "NaqhDT",
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"content": "<p>English description is not available for the problem. Please switch to Chinese.</p>\n\n<div>\n<div> </div>\n</div>\n",
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"translatedTitle": "往完全二叉树添加节点",
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"translatedContent": "<p>完全二叉树是每一层（除最后一层外）都是完全填充（即，节点数达到最大，第 <code>n</code> 层有 <code>2<sup>n-1</sup></code> 个节点）的，并且所有的节点都尽可能地集中在左侧。</p>\n\n<p>设计一个用完全二叉树初始化的数据结构 <code>CBTInserter</code>，它支持以下几种操作：</p>\n\n<ul>\n\t<li><code>CBTInserter(TreeNode root)</code> 使用根节点为 <code>root</code> 的给定树初始化该数据结构；</li>\n\t<li><code>CBTInserter.insert(int v)</code> 向树中插入一个新节点，节点类型为 <code>TreeNode</code>，值为 <code>v</code> 。使树保持完全二叉树的状态，<strong>并返回插入的新节点的父节点的值</strong>；</li>\n\t<li><code>CBTInserter.get_root()</code> 将返回树的根节点。</li>\n</ul>\n\n<p> </p>\n\n<ol>\n</ol>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>inputs = ["CBTInserter","insert","get_root"], inputs = [[[1]],[2],[]]\n<strong>输出：</strong>[null,1,[1,2]]\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>inputs = ["CBTInserter","insert","insert","get_root"], inputs = [[[1,2,3,4,5,6]],[7],[8],[]]\n<strong>输出：</strong>[null,3,4,[1,2,3,4,5,6,7,8]]\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li>最初给定的树是完全二叉树，且包含 <code>1</code> 到 <code>1000</code> 个节点。</li>\n\t<li>每个测试用例最多调用 <code>CBTInserter.insert</code> 操作 <code>10000</code> 次。</li>\n\t<li>给定节点或插入节点的每个值都在 <code>0</code> 到 <code>5000</code> 之间。</li>\n</ul>\n\n<p> </p>\n\n<p><meta charset=\"UTF-8\" />注意：本题与主站 919 题相同： <a href=\"https://leetcode-cn.com/problems/complete-binary-tree-inserter/\">https://leetcode-cn.com/problems/complete-binary-tree-inserter/</a></p>\n",
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"isPaidOnly": false,
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"difficulty": "Medium",
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"likes": 20,
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"similarQuestions": "[]",
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"contributors": [
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"username": "LeetCode",
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"topicTags": [
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"name": "Tree",
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"translatedName": "树",
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"lang": "C++",
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"code": "/**\n * Definition for a binary tree node.\n * struct TreeNode {\n * int val;\n * TreeNode *left;\n * TreeNode *right;\n * TreeNode() : val(0), left(nullptr), right(nullptr) {}\n * TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}\n * TreeNode(int x, TreeNode *left, TreeNode *right) : val(x), left(left), right(right) {}\n * };\n */\nclass CBTInserter {\npublic:\n CBTInserter(TreeNode* root) {\n\n }\n \n int insert(int v) {\n\n }\n \n TreeNode* get_root() {\n\n }\n};\n\n/**\n * Your CBTInserter object will be instantiated and called as such:\n * CBTInserter* obj = new CBTInserter(root);\n * int param_1 = obj->insert(v);\n * TreeNode* param_2 = obj->get_root();\n */",
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"code": "/**\n * Definition for a binary tree node.\n * public class TreeNode {\n * int val;\n * TreeNode left;\n * TreeNode right;\n * TreeNode() {}\n * TreeNode(int val) { this.val = val; }\n * TreeNode(int val, TreeNode left, TreeNode right) {\n * this.val = val;\n * this.left = left;\n * this.right = right;\n * }\n * }\n */\nclass CBTInserter {\n\n public CBTInserter(TreeNode root) {\n\n }\n \n public int insert(int v) {\n\n }\n \n public TreeNode get_root() {\n\n }\n}\n\n/**\n * Your CBTInserter object will be instantiated and called as such:\n * CBTInserter obj = new CBTInserter(root);\n * int param_1 = obj.insert(v);\n * TreeNode param_2 = obj.get_root();\n */",
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"code": "# Definition for a binary tree node.\n# class TreeNode(object):\n# def __init__(self, val=0, left=None, right=None):\n# self.val = val\n# self.left = left\n# self.right = right\nclass CBTInserter(object):\n\n def __init__(self, root):\n \"\"\"\n :type root: TreeNode\n \"\"\"\n\n\n def insert(self, v):\n \"\"\"\n :type v: int\n :rtype: int\n \"\"\"\n\n\n def get_root(self):\n \"\"\"\n :rtype: TreeNode\n \"\"\"\n\n\n\n# Your CBTInserter object will be instantiated and called as such:\n# obj = CBTInserter(root)\n# param_1 = obj.insert(v)\n# param_2 = obj.get_root()",
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"code": "# Definition for a binary tree node.\n# class TreeNode:\n# def __init__(self, val=0, left=None, right=None):\n# self.val = val\n# self.left = left\n# self.right = right\nclass CBTInserter:\n\n def __init__(self, root: TreeNode):\n\n\n def insert(self, v: int) -> int:\n\n\n def get_root(self) -> TreeNode:\n\n\n\n# Your CBTInserter object will be instantiated and called as such:\n# obj = CBTInserter(root)\n# param_1 = obj.insert(v)\n# param_2 = obj.get_root()",
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"code": "/**\n * Definition for a binary tree node.\n * struct TreeNode {\n * int val;\n * struct TreeNode *left;\n * struct TreeNode *right;\n * };\n */\n\n\n\ntypedef struct {\n\n} CBTInserter;\n\n\nCBTInserter* cBTInserterCreate(struct TreeNode* root) {\n\n}\n\nint cBTInserterInsert(CBTInserter* obj, int v) {\n\n}\n\nstruct TreeNode* cBTInserterGet_root(CBTInserter* obj) {\n\n}\n\nvoid cBTInserterFree(CBTInserter* obj) {\n\n}\n\n/**\n * Your CBTInserter struct will be instantiated and called as such:\n * CBTInserter* obj = cBTInserterCreate(root);\n * int param_1 = cBTInserterInsert(obj, v);\n \n * struct TreeNode* param_2 = cBTInserterGet_root(obj);\n \n * cBTInserterFree(obj);\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 CBTInserter {\n\n public CBTInserter(TreeNode root) {\n\n }\n \n public int Insert(int v) {\n\n }\n \n public TreeNode Get_root() {\n\n }\n}\n\n/**\n * Your CBTInserter object will be instantiated and called as such:\n * CBTInserter obj = new CBTInserter(root);\n * int param_1 = obj.Insert(v);\n * TreeNode param_2 = obj.Get_root();\n */",
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"code": "/**\n * Definition for a binary tree node.\n * function TreeNode(val, left, right) {\n * this.val = (val===undefined ? 0 : val)\n * this.left = (left===undefined ? null : left)\n * this.right = (right===undefined ? null : right)\n * }\n */\n/**\n * @param {TreeNode} root\n */\nvar CBTInserter = function(root) {\n\n};\n\n/** \n * @param {number} v\n * @return {number}\n */\nCBTInserter.prototype.insert = function(v) {\n\n};\n\n/**\n * @return {TreeNode}\n */\nCBTInserter.prototype.get_root = function() {\n\n};\n\n/**\n * Your CBTInserter object will be instantiated and called as such:\n * var obj = new CBTInserter(root)\n * var param_1 = obj.insert(v)\n * var param_2 = obj.get_root()\n */",
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"code": "# Definition for a binary tree node.\n# class TreeNode\n# attr_accessor :val, :left, :right\n# def initialize(val = 0, left = nil, right = nil)\n# @val = val\n# @left = left\n# @right = right\n# end\n# end\nclass CBTInserter\n\n=begin\n :type root: TreeNode\n=end\n def initialize(root)\n\n end\n\n\n=begin\n :type v: Integer\n :rtype: Integer\n=end\n def insert(v)\n\n end\n\n\n=begin\n :rtype: TreeNode\n=end\n def get_root()\n\n end\n\n\nend\n\n# Your CBTInserter object will be instantiated and called as such:\n# obj = CBTInserter.new(root)\n# param_1 = obj.insert(v)\n# param_2 = obj.get_root()",
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"__typename": "CodeSnippetNode"
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"lang": "Swift",
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"langSlug": "swift",
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"code": "/**\n * Definition for a binary tree node.\n * public class TreeNode {\n * public var val: Int\n * public var left: TreeNode?\n * public var right: TreeNode?\n * public init() { self.val = 0; self.left = nil; self.right = nil; }\n * public init(_ val: Int) { self.val = val; self.left = nil; self.right = nil; }\n * public init(_ val: Int, _ left: TreeNode?, _ right: TreeNode?) {\n * self.val = val\n * self.left = left\n * self.right = right\n * }\n * }\n */\n\nclass CBTInserter {\n\n init(_ root: TreeNode?) {\n\n }\n \n func insert(_ v: Int) -> Int {\n\n }\n \n func get_root() -> TreeNode? {\n\n }\n}\n\n/**\n * Your CBTInserter object will be instantiated and called as such:\n * let obj = CBTInserter(root)\n * let ret_1: Int = obj.insert(v)\n * let ret_2: TreeNode? = obj.get_root()\n */",
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"code": "/**\n * Definition for a binary tree node.\n * type TreeNode struct {\n * Val int\n * Left *TreeNode\n * Right *TreeNode\n * }\n */\ntype CBTInserter struct {\n\n}\n\n\nfunc Constructor(root *TreeNode) CBTInserter {\n\n}\n\n\nfunc (this *CBTInserter) Insert(v int) int {\n\n}\n\n\nfunc (this *CBTInserter) Get_root() *TreeNode {\n\n}\n\n\n/**\n * Your CBTInserter object will be instantiated and called as such:\n * obj := Constructor(root);\n * param_1 := obj.Insert(v);\n * param_2 := obj.Get_root();\n */",
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"__typename": "CodeSnippetNode"
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"lang": "Scala",
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"langSlug": "scala",
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"code": "/**\n * Definition for a binary tree node.\n * class TreeNode(_value: Int = 0, _left: TreeNode = null, _right: TreeNode = null) {\n * var value: Int = _value\n * var left: TreeNode = _left\n * var right: TreeNode = _right\n * }\n */\nclass CBTInserter(_root: TreeNode) {\n\n def insert(v: Int): Int = {\n\n }\n\n def get_root(): TreeNode = {\n\n }\n\n}\n\n/**\n * Your CBTInserter object will be instantiated and called as such:\n * var obj = new CBTInserter(root)\n * var param_1 = obj.insert(v)\n * var param_2 = obj.get_root()\n */",
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"__typename": "CodeSnippetNode"
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},
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"lang": "Kotlin",
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"langSlug": "kotlin",
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"code": "/**\n * Example:\n * var ti = TreeNode(5)\n * var v = ti.`val`\n * Definition for a binary tree node.\n * class TreeNode(var `val`: Int) {\n * var left: TreeNode? = null\n * var right: TreeNode? = null\n * }\n */\nclass CBTInserter(root: TreeNode?) {\n\n fun insert(v: Int): Int {\n\n }\n\n fun get_root(): TreeNode? {\n\n }\n\n}\n\n/**\n * Your CBTInserter object will be instantiated and called as such:\n * var obj = CBTInserter(root)\n * var param_1 = obj.insert(v)\n * var param_2 = obj.get_root()\n */",
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"lang": "Rust",
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"langSlug": "rust",
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"code": "// Definition for a binary tree node.\n// #[derive(Debug, PartialEq, Eq)]\n// pub struct TreeNode {\n// pub val: i32,\n// pub left: Option<Rc<RefCell<TreeNode>>>,\n// pub right: Option<Rc<RefCell<TreeNode>>>,\n// }\n//\n// impl TreeNode {\n// #[inline]\n// pub fn new(val: i32) -> Self {\n// TreeNode {\n// val,\n// left: None,\n// right: None\n// }\n// }\n// }\nstruct CBTInserter {\n\n}\n\n\n/**\n * `&self` means the method takes an immutable reference.\n * If you need a mutable reference, change it to `&mut self` instead.\n */\nimpl CBTInserter {\n\n fn new(root: Option<Rc<RefCell<TreeNode>>>) -> Self {\n\n }\n \n fn insert(&self, v: i32) -> i32 {\n\n }\n \n fn get_root(&self) -> Option<Rc<RefCell<TreeNode>>> {\n\n }\n}\n\n/**\n * Your CBTInserter object will be instantiated and called as such:\n * let obj = CBTInserter::new(root);\n * let ret_1: i32 = obj.insert(v);\n * let ret_2: Option<Rc<RefCell<TreeNode>>> = obj.get_root();\n */",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "PHP",
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"langSlug": "php",
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"code": "/**\n * Definition for a binary tree node.\n * class TreeNode {\n * public $val = null;\n * public $left = null;\n * public $right = null;\n * function __construct($val = 0, $left = null, $right = null) {\n * $this->val = $val;\n * $this->left = $left;\n * $this->right = $right;\n * }\n * }\n */\nclass CBTInserter {\n /**\n * @param TreeNode $root\n */\n function __construct($root) {\n\n }\n\n /**\n * @param Integer $v\n * @return Integer\n */\n function insert($v) {\n\n }\n\n /**\n * @return TreeNode\n */\n function get_root() {\n\n }\n}\n\n/**\n * Your CBTInserter object will be instantiated and called as such:\n * $obj = CBTInserter($root);\n * $ret_1 = $obj->insert($v);\n * $ret_2 = $obj->get_root();\n */",
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"__typename": "CodeSnippetNode"
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},
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"lang": "TypeScript",
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"langSlug": "typescript",
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"code": "/**\n * Definition for a binary tree node.\n * class TreeNode {\n * val: number\n * left: TreeNode | null\n * right: TreeNode | null\n * constructor(val?: number, left?: TreeNode | null, right?: TreeNode | null) {\n * this.val = (val===undefined ? 0 : val)\n * this.left = (left===undefined ? null : left)\n * this.right = (right===undefined ? null : right)\n * }\n * }\n */\n\nclass CBTInserter {\n constructor(root: TreeNode | null) {\n\n }\n\n insert(v: number): number {\n\n }\n\n get_root(): TreeNode | null {\n\n }\n}\n\n/**\n * Your CBTInserter object will be instantiated and called as such:\n * var obj = new CBTInserter(root)\n * var param_1 = obj.insert(v)\n * var param_2 = obj.get_root()\n */",
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"__typename": "CodeSnippetNode"
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"lang": "Racket",
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"langSlug": "racket",
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"code": "; Definition for a binary tree node.\n#|\n\n; val : integer?\n; left : (or/c tree-node? #f)\n; right : (or/c tree-node? #f)\n(struct tree-node\n (val left right) #:mutable #:transparent)\n\n; constructor\n(define (make-tree-node [val 0])\n (tree-node val #f #f))\n\n|#\n\n(define cbt-inserter%\n (class object%\n (super-new)\n\n ; root : (or/c tree-node? #f)\n (init-field\n root)\n \n ; insert : exact-integer? -> exact-integer?\n (define/public (insert v)\n\n )\n ; get_root : -> (or/c tree-node? #f)\n (define/public (get_root)\n\n )))\n\n;; Your cbt-inserter% object will be instantiated and called as such:\n;; (define obj (new cbt-inserter% [root root]))\n;; (define param_1 (send obj insert v))\n;; (define param_2 (send obj get_root))",
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"__typename": "CodeSnippetNode"
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "%% Definition for a binary tree node.\n%%\n%% -record(tree_node, {val = 0 :: integer(),\n%% left = null :: 'null' | #tree_node{},\n%% right = null :: 'null' | #tree_node{}}).\n\n-spec cbt_inserter_init_(Root :: #tree_node{} | null) -> any().\ncbt_inserter_init_(Root) ->\n .\n\n-spec cbt_inserter_insert(V :: integer()) -> integer().\ncbt_inserter_insert(V) ->\n .\n\n-spec cbt_inserter_get_root() -> #tree_node{} | null.\ncbt_inserter_get_root() ->\n .\n\n\n%% Your functions will be called as such:\n%% cbt_inserter_init_(Root),\n%% Param_1 = cbt_inserter_insert(V),\n%% Param_2 = cbt_inserter_get_root(),\n\n%% cbt_inserter_init_ will be called before every test case, in which you can do some necessary initializations.",
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"lang": "Elixir",
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"langSlug": "elixir",
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"code": "# Definition for a binary tree node.\n#\n# defmodule TreeNode do\n# @type t :: %__MODULE__{\n# val: integer,\n# left: TreeNode.t() | nil,\n# right: TreeNode.t() | nil\n# }\n# defstruct val: 0, left: nil, right: nil\n# end\n\ndefmodule CBTInserter do\n @spec init_(root :: TreeNode.t | nil) :: any\n def init_(root) do\n\n end\n\n @spec insert(v :: integer) :: integer\n def insert(v) do\n\n end\n\n @spec get_root() :: TreeNode.t | nil\n def get_root() do\n\n end\nend\n\n# Your functions will be called as such:\n# CBTInserter.init_(root)\n# param_1 = CBTInserter.insert(v)\n# param_2 = CBTInserter.get_root()\n\n# CBTInserter.init_ will be called before every test case, in which you can do some necessary initializations.",
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"sampleTestCase": "[\"CBTInserter\",\"insert\",\"get_root\"]\n[[[1]],[2],[]]",
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