leetcode-problemset/leetcode-cn/originData/[no content]change-the-root-of-a-binary-tree.json

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            "categoryTitle": "Algorithms",
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            "title": "Change the Root of a Binary Tree",
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            "translatedTitle": "改变二叉树的根节点",
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                {
                    "name": "Tree",
                    "slug": "tree",
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                    "name": "Depth-First Search",
                    "slug": "depth-first-search",
                    "translatedName": "深度优先搜索",
                    "__typename": "TopicTagNode"
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                {
                    "name": "Binary Tree",
                    "slug": "binary-tree",
                    "translatedName": "二叉树",
                    "__typename": "TopicTagNode"
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            "hints": [
                "Start traversing from the leaf. Always go up till you reach the root.",
                "Change pointers as asked, make the current node's parent its left child, and make the left child the right one if needed."
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