mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-10 18:48:13 +08:00
204 lines
28 KiB
JSON
204 lines
28 KiB
JSON
{
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"data": {
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"question": {
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"questionId": "653",
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"questionFrontendId": "653",
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"categoryTitle": "Algorithms",
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"boundTopicId": 1777,
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"title": "Two Sum IV - Input is a BST",
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"titleSlug": "two-sum-iv-input-is-a-bst",
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"content": "<p>Given the <code>root</code> of a binary search tree and an integer <code>k</code>, return <code>true</code> <em>if there exist two elements in the BST such that their sum is equal to</em> <code>k</code>, <em>or</em> <code>false</code> <em>otherwise</em>.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/09/21/sum_tree_1.jpg\" style=\"width: 400px; height: 229px;\" />\n<pre>\n<strong>Input:</strong> root = [5,3,6,2,4,null,7], k = 9\n<strong>Output:</strong> true\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/09/21/sum_tree_2.jpg\" style=\"width: 400px; height: 229px;\" />\n<pre>\n<strong>Input:</strong> root = [5,3,6,2,4,null,7], k = 28\n<strong>Output:</strong> false\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, 10<sup>4</sup>]</code>.</li>\n\t<li><code>-10<sup>4</sup> <= Node.val <= 10<sup>4</sup></code></li>\n\t<li><code>root</code> is guaranteed to be a <strong>valid</strong> binary search tree.</li>\n\t<li><code>-10<sup>5</sup> <= k <= 10<sup>5</sup></code></li>\n</ul>\n",
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"translatedTitle": "两数之和 IV - 输入二叉搜索树",
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"translatedContent": "<p>给定一个二叉搜索树 <code>root</code> 和一个目标结果 <code>k</code>，如果二叉搜索树中存在两个元素且它们的和等于给定的目标结果，则返回 <code>true</code>。</p>\n\n<p> </p>\n\n<p><strong>示例 1：</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/09/21/sum_tree_1.jpg\" style=\"height: 229px; width: 400px;\" />\n<pre>\n<strong>输入:</strong> root = [5,3,6,2,4,null,7], k = 9\n<strong>输出:</strong> true\n</pre>\n\n<p><strong>示例 2：</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/09/21/sum_tree_2.jpg\" style=\"height: 229px; width: 400px;\" />\n<pre>\n<strong>输入:</strong> root = [5,3,6,2,4,null,7], k = 28\n<strong>输出:</strong> false\n</pre>\n\n<p> </p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li>二叉树的节点个数的范围是 <code>[1, 10<sup>4</sup>]</code>.</li>\n\t<li><code>-10<sup>4</sup> <= Node.val <= 10<sup>4</sup></code></li>\n\t<li>题目数据保证，输入的 <code>root</code> 是一棵 <strong>有效</strong> 的二叉搜索树</li>\n\t<li><code>-10<sup>5</sup> <= k <= 10<sup>5</sup></code></li>\n</ul>\n",
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