mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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188 lines
28 KiB
JSON
188 lines
28 KiB
JSON
{
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"questionId": "1114",
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"questionFrontendId": "1038",
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"categoryTitle": "Algorithms",
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"boundTopicId": 3836,
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"title": "Binary Search Tree to Greater Sum Tree",
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"titleSlug": "binary-search-tree-to-greater-sum-tree",
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"content": "<p>Given the <code>root</code> of a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original BST is changed to the original key plus the sum of all keys greater than the original key in BST.</p>\n\n<p>As a reminder, a <em>binary search tree</em> is a tree that satisfies these constraints:</p>\n\n<ul>\n\t<li>The left subtree of a node contains only nodes with keys <strong>less than</strong> the node's key.</li>\n\t<li>The right subtree of a node contains only nodes with keys <strong>greater than</strong> the node's key.</li>\n\t<li>Both the left and right subtrees must also be binary search trees.</li>\n</ul>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/05/02/tree.png\" style=\"width: 400px; height: 273px;\" />\n<pre>\n<strong>Input:</strong> root = [4,1,6,0,2,5,7,null,null,null,3,null,null,null,8]\n<strong>Output:</strong> [30,36,21,36,35,26,15,null,null,null,33,null,null,null,8]\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> root = [0,null,1]\n<strong>Output:</strong> [1,null,1]\n</pre>\n\n<p> </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, 100]</code>.</li>\n\t<li><code>0 <= Node.val <= 100</code></li>\n\t<li>All the values in the tree are <strong>unique</strong>.</li>\n</ul>\n\n<p> </p>\n<p><strong>Note:</strong> This question is the same as 538: <a href=\"https://leetcode.com/problems/convert-bst-to-greater-tree/\" target=\"_blank\">https://leetcode.com/problems/convert-bst-to-greater-tree/</a></p>\n",
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"translatedTitle": "从二叉搜索树到更大和树",
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"translatedContent": "<p><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:宋体\"><font face=\"宋体\">给定一个二叉搜索树</font></span></span></span></span> <code>root</code> (BST)<span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:宋体\"><font face=\"宋体\">，请将它的每个</font></span></span></span></span>节点<span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:宋体\"><font face=\"宋体\">的值替换成树中大于或者等于该</font></span></span></span></span>节点<span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:宋体\"><font face=\"宋体\">值的所有</font></span></span></span></span>节点<span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:宋体\"><font face=\"宋体\">值之和。</font></span></span></span></span></p>\n\n<p>提醒一下， <em>二叉搜索树</em> 满足下列约束条件：</p>\n\n<ul>\n\t<li>节点的左子树仅包含键<strong> 小于 </strong>节点键的节点。</li>\n\t<li>节点的右子树仅包含键<strong> 大于</strong> 节点键的节点。</li>\n\t<li>左右子树也必须是二叉搜索树。</li>\n</ul>\n\n<p> </p>\n\n<p><strong>示例 1：</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2019/05/03/tree.png\" style=\"height:273px; width:400px\" /></strong></p>\n\n<pre>\n<strong>输入：</strong>[4,1,6,0,2,5,7,null,null,null,3,null,null,null,8]\n<strong>输出：</strong>[30,36,21,36,35,26,15,null,null,null,33,null,null,null,8]\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>root = [0,null,1]\n<strong>输出：</strong>[1,null,1]\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li>树中的节点数在 <code>[1, 100]</code> 范围内。</li>\n\t<li><code>0 <= Node.val <= 100</code></li>\n\t<li>树中的所有值均 <strong>不重复</strong> 。</li>\n</ul>\n\n<p> </p>\n\n<p><strong>注意：</strong>该题目与 538: <a href=\"https://leetcode-cn.com/problems/convert-bst-to-greater-tree/\">https://leetcode-cn.com/problems/convert-bst-to-greater-tree/ </a>相同</p>\n",
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