{ "data": { "question": { "questionId": "1624", "questionFrontendId": "1485", "categoryTitle": "Algorithms", "boundTopicId": 293066, "title": "Clone Binary Tree With Random Pointer", "titleSlug": "clone-binary-tree-with-random-pointer", "content": null, "translatedTitle": "克隆含随机指针的二叉树", "translatedContent": null, "isPaidOnly": true, "difficulty": "Medium", "likes": 27, "dislikes": 0, "isLiked": null, "similarQuestions": "[{\"title\": \"Clone Graph\", \"titleSlug\": \"clone-graph\", \"difficulty\": \"Medium\", \"translatedTitle\": \"\\u514b\\u9686\\u56fe\", \"isPaidOnly\": false}, {\"title\": \"Copy List with Random Pointer\", \"titleSlug\": \"copy-list-with-random-pointer\", \"difficulty\": \"Medium\", \"translatedTitle\": \"\\u968f\\u673a\\u94fe\\u8868\\u7684\\u590d\\u5236\", \"isPaidOnly\": false}, {\"title\": \"Clone N-ary Tree\", \"titleSlug\": \"clone-n-ary-tree\", \"difficulty\": \"Medium\", \"translatedTitle\": \"\\u514b\\u9686 N \\u53c9\\u6811\", \"isPaidOnly\": true}]", "contributors": [], "langToValidPlayground": null, "topicTags": [ { "name": "Tree", "slug": "tree", "translatedName": "树", "__typename": "TopicTagNode" }, { "name": "Depth-First Search", "slug": "depth-first-search", "translatedName": "深度优先搜索", "__typename": "TopicTagNode" }, { "name": "Breadth-First Search", "slug": "breadth-first-search", "translatedName": "广度优先搜索", "__typename": "TopicTagNode" }, { "name": "Hash Table", "slug": "hash-table", "translatedName": "哈希表", "__typename": "TopicTagNode" }, { "name": "Binary Tree", "slug": "binary-tree", "translatedName": "二叉树", "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": null, "stats": "{\"totalAccepted\": \"2K\", \"totalSubmission\": \"2.6K\", \"totalAcceptedRaw\": 1970, \"totalSubmissionRaw\": 2582, \"acRate\": \"76.3%\"}", "hints": [ "Traverse the tree, keep a hashtable with you and create a nodecopy for each node in the tree.", "Start traversing the original tree again and connect the left, right and random pointers in the cloned tree the same way as the original tree with the help of the hashtable." ], "solution": null, "status": null, "sampleTestCase": "[[1,null],null,[4,3],[7,0]]", "metaData": "{\n \"name\": \"copyRandomBinaryTree\",\n \"params\": [\n {\n \"name\": \"root\",\n \"type\": \"TreeNode\"\n }\n ],\n \"return\": {\n \"type\": \"TreeNode\"\n },\n \"manual\": true,\n \"languages\": [\n \"cpp\",\n \"java\",\n \"python\",\n \"csharp\",\n \"python3\",\n \"javascript\",\n \"typescript\",\n \"kotlin\",\n \"scala\",\n \"swift\",\n \"php\",\n \"ruby\",\n \"golang\"\n ], \"typescriptCustomType\" : \"class _Node {\\n val: number\\n left: _Node | null\\n right: _Node | null\\n random: _Node | null\\n\\n constructor(val?: number, left?: _Node | null, right?: _Node | null, random?: _Node | null) {\\n this.val = (val===undefined ? 0 : val)\\n this.left = (left===undefined ? null : left)\\n this.right = (right===undefined ? null : right)\\n this.random = (random===undefined ? null : random)\\n }\\n}\\n\\n class NodeCopy {\\n val: number\\n left: NodeCopy | null\\n right: NodeCopy | null\\n random: NodeCopy | null\\n\\n constructor(val?: number, left?: NodeCopy | null, right?: NodeCopy | null, random?: NodeCopy | null) {\\n this.val = (val===undefined ? 0 : val)\\n this.left = (left===undefined ? null : left)\\n this.right = (right===undefined ? null : right)\\n this.random = (random===undefined ? null : random)\\n }\\n}\\n\"\n}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "envInfo": "{\"cpp\":[\"C++\",\"

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