mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-11-04 11:43:12 +08:00
28 lines
1.1 KiB
HTML
28 lines
1.1 KiB
HTML
<p>Given the <code>head</code> of a singly linked list where elements are <strong>sorted in ascending order</strong>, convert it to a height balanced BST.</p>
|
|
|
|
<p>For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of <em>every</em> node never differ by more than 1.</p>
|
|
|
|
<p> </p>
|
|
<p><strong>Example 1:</strong></p>
|
|
<img alt="" src="https://assets.leetcode.com/uploads/2020/08/17/linked.jpg" style="width: 500px; height: 388px;" />
|
|
<pre>
|
|
<strong>Input:</strong> head = [-10,-3,0,5,9]
|
|
<strong>Output:</strong> [0,-3,9,-10,null,5]
|
|
<strong>Explanation:</strong> One possible answer is [0,-3,9,-10,null,5], which represents the shown height balanced BST.
|
|
</pre>
|
|
|
|
<p><strong>Example 2:</strong></p>
|
|
|
|
<pre>
|
|
<strong>Input:</strong> head = []
|
|
<strong>Output:</strong> []
|
|
</pre>
|
|
|
|
<p> </p>
|
|
<p><strong>Constraints:</strong></p>
|
|
|
|
<ul>
|
|
<li>The number of nodes in <code>head</code> is in the range <code>[0, 2 * 10<sup>4</sup>]</code>.</li>
|
|
<li><code>-10<sup>5</sup> <= Node.val <= 10<sup>5</sup></code></li>
|
|
</ul>
|