leetcode-problemset/leetcode/originData/delete-leaves-with-a-given-value.json

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        "question": {
            "questionId": "1450",
            "questionFrontendId": "1325",
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            "title": "Delete Leaves With a Given Value",
            "titleSlug": "delete-leaves-with-a-given-value",
            "content": "<p>Given a binary tree <code>root</code> and an integer <code>target</code>, delete all the <strong>leaf nodes</strong> with value <code>target</code>.</p>\n\n<p>Note that once you delete a leaf node with value <code>target</code><strong>, </strong>if its parent node becomes a leaf node and has the value <code>target</code>, it should also be deleted (you need to continue doing that until you cannot).</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/01/09/sample_1_1684.png\" style=\"width: 500px; height: 112px;\" /></strong></p>\n\n<pre>\n<strong>Input:</strong> root = [1,2,3,2,null,2,4], target = 2\n<strong>Output:</strong> [1,null,3,null,4]\n<strong>Explanation:</strong> Leaf nodes in green with value (target = 2) are removed (Picture in left). \nAfter removing, new nodes become leaf nodes with value (target = 2) (Picture in center).\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/01/09/sample_2_1684.png\" style=\"width: 400px; height: 154px;\" /></strong></p>\n\n<pre>\n<strong>Input:</strong> root = [1,3,3,3,2], target = 3\n<strong>Output:</strong> [1,3,null,null,2]\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/01/15/sample_3_1684.png\" style=\"width: 500px; height: 166px;\" /></strong></p>\n\n<pre>\n<strong>Input:</strong> root = [1,2,null,2,null,2], target = 2\n<strong>Output:</strong> [1]\n<strong>Explanation:</strong> Leaf nodes in green with value (target = 2) are removed at each step.\n</pre>\n\n<p>&nbsp;</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>[1, 3000]</code>.</li>\n\t<li><code>1 &lt;= Node.val, target &lt;= 1000</code></li>\n</ul>\n",
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                    "name": "Tree",
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                    "name": "Depth-First Search",
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                    "lang": "C++",
                    "langSlug": "cpp",
                    "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 Solution {\npublic:\n    TreeNode* removeLeafNodes(TreeNode* root, int target) {\n        \n    }\n};",
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                {
                    "lang": "Java",
                    "langSlug": "java",
                    "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 Solution {\n    public TreeNode removeLeafNodes(TreeNode root, int target) {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Python",
                    "langSlug": "python",
                    "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 Solution(object):\n    def removeLeafNodes(self, root, target):\n        \"\"\"\n        :type root: TreeNode\n        :type target: int\n        :rtype: TreeNode\n        \"\"\"\n        ",
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                    "langSlug": "python3",
                    "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 Solution:\n    def removeLeafNodes(self, root: Optional[TreeNode], target: int) -> Optional[TreeNode]:\n        ",
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                {
                    "lang": "C",
                    "langSlug": "c",
                    "code": "/**\n * Definition for a binary tree node.\n * struct TreeNode {\n *     int val;\n *     struct TreeNode *left;\n *     struct TreeNode *right;\n * };\n */\nstruct TreeNode* removeLeafNodes(struct TreeNode* root, int target) {\n    \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 TreeNode RemoveLeafNodes(TreeNode root, int target) {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "JavaScript",
                    "langSlug": "javascript",
                    "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 * @param {number} target\n * @return {TreeNode}\n */\nvar removeLeafNodes = function(root, target) {\n    \n};",
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                    "lang": "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\nfunction removeLeafNodes(root: TreeNode | null, target: number): TreeNode | null {\n    \n};",
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                {
                    "lang": "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 Solution {\n\n    /**\n     * @param TreeNode $root\n     * @param Integer $target\n     * @return TreeNode\n     */\n    function removeLeafNodes($root, $target) {\n        \n    }\n}",
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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 */\nclass Solution {\n    func removeLeafNodes(_ root: TreeNode?, _ target: Int) -> TreeNode? {\n        \n    }\n}",
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                    "lang": "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 Solution {\n    fun removeLeafNodes(root: TreeNode?, target: Int): TreeNode? {\n        \n    }\n}",
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                    "code": "/**\n * Definition for a binary tree node.\n * class TreeNode {\n *   int val;\n *   TreeNode? left;\n *   TreeNode? right;\n *   TreeNode([this.val = 0, this.left, this.right]);\n * }\n */\nclass Solution {\n  TreeNode? removeLeafNodes(TreeNode? root, int target) {\n    \n  }\n}",
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                    "lang": "Go",
                    "langSlug": "golang",
                    "code": "/**\n * Definition for a binary tree node.\n * type TreeNode struct {\n *     Val int\n *     Left *TreeNode\n *     Right *TreeNode\n * }\n */\nfunc removeLeafNodes(root *TreeNode, target int) *TreeNode {\n    \n}",
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                    "lang": "Ruby",
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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\n# @param {TreeNode} root\n# @param {Integer} target\n# @return {TreeNode}\ndef remove_leaf_nodes(root, target)\n    \nend",
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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 */\nobject Solution {\n    def removeLeafNodes(root: TreeNode, target: Int): TreeNode = {\n        \n    }\n}",
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                {
                    "lang": "Rust",
                    "langSlug": "rust",
                    "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// }\nuse std::rc::Rc;\nuse std::cell::RefCell;\nimpl Solution {\n    pub fn remove_leaf_nodes(root: Option<Rc<RefCell<TreeNode>>>, target: i32) -> Option<Rc<RefCell<TreeNode>>> {\n        \n    }\n}",
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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/contract (remove-leaf-nodes root target)\n  (-> (or/c tree-node? #f) exact-integer? (or/c tree-node? #f))\n  )",
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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 remove_leaf_nodes(Root :: #tree_node{} | null, Target :: integer()) -> #tree_node{} | null.\nremove_leaf_nodes(Root, Target) ->\n  .",
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                    "lang": "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 Solution do\n  @spec remove_leaf_nodes(root :: TreeNode.t | nil, target :: integer) :: TreeNode.t | nil\n  def remove_leaf_nodes(root, target) do\n    \n  end\nend",
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                "Use the DFS to reconstruct the tree such that no leaf node is equal to the target. If the leaf node is equal to the target, return an empty object instead."
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