Project Notes

Convert Sorted Array to Binary Search Tree

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Description

tab: English
 
<p>Given an integer array <code>nums</code> where the elements are sorted in <strong>ascending order</strong>, convert <em>it to a </em><span data-keyword="height-balanced"><strong><em>height-balanced</em></strong></span> <em>binary search tree</em>.</p>
 
<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>
<img alt="" src="https://assets.leetcode.com/uploads/2021/02/18/btree1.jpg" style="width: 302px; height: 222px;" />
<pre>
<strong>Input:</strong> nums = [-10,-3,0,5,9]
<strong>Output:</strong> [0,-3,9,-10,null,5]
<strong>Explanation:</strong> [0,-10,5,null,-3,null,9] is also accepted:
<img alt="" src="https://assets.leetcode.com/uploads/2021/02/18/btree2.jpg" style="width: 302px; height: 222px;" />
</pre>
 
<p><strong class="example">Example 2:</strong></p>
<img alt="" src="https://assets.leetcode.com/uploads/2021/02/18/btree.jpg" style="width: 342px; height: 142px;" />
<pre>
<strong>Input:</strong> nums = [1,3]
<strong>Output:</strong> [3,1]
<strong>Explanation:</strong> [1,null,3] and [3,1] are both height-balanced BSTs.
</pre>
 
<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>
 
<ul>
	<li><code>1 &lt;= nums.length &lt;= 10<sup>4</sup></code></li>
	<li><code>-10<sup>4</sup> &lt;= nums[i] &lt;= 10<sup>4</sup></code></li>
	<li><code>nums</code> is sorted in a <strong>strictly increasing</strong> order.</li>
</ul>
 
 
 
---
 
[submissions](https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/submissions/) | [solutions](https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/solutions/)
 
 
tab: 中文
 
<p>给你一个整数数组 <code>nums</code> ，其中元素已经按 <strong>升序</strong> 排列，请你将其转换为一棵 <span data-keyword="height-balanced">平衡</span> 二叉搜索树。</p>
 
<p>&nbsp;</p>
 
<p><strong>示例 1：</strong></p>
<img alt="" src="https://assets.leetcode.com/uploads/2021/02/18/btree1.jpg" style="width: 302px; height: 222px;" />
<pre>
<strong>输入：</strong>nums = [-10,-3,0,5,9]
<strong>输出：</strong>[0,-3,9,-10,null,5]
<strong>解释：</strong>[0,-10,5,null,-3,null,9] 也将被视为正确答案：
<img alt="" src="https://assets.leetcode.com/uploads/2021/02/18/btree2.jpg" style="width: 302px; height: 222px;" />
</pre>
 
<p><strong>示例 2：</strong></p>
<img alt="" src="https://assets.leetcode.com/uploads/2021/02/18/btree.jpg" style="width: 342px; height: 142px;" />
<pre>
<strong>输入：</strong>nums = [1,3]
<strong>输出：</strong>[3,1]
<strong>解释：</strong>[1,null,3] 和 [3,1] 都是高度平衡二叉搜索树。
</pre>
 
<p>&nbsp;</p>
 
<p><strong>提示：</strong></p>
 
<ul>
	<li><code>1 &lt;= nums.length &lt;= 10<sup>4</sup></code></li>
	<li><code>-10<sup>4</sup> &lt;= nums[i] &lt;= 10<sup>4</sup></code></li>
	<li><code>nums</code> 按 <strong>严格递增</strong> 顺序排列</li>
</ul>
 
 
 
---
 
[提交记录](https://leetcode.cn/problems/convert-sorted-array-to-binary-search-tree/submissions/) | [题解](https://leetcode.cn/problems/convert-sorted-array-to-binary-search-tree/solution/)

Solutions & Notes

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