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33 lines
1.4 KiB
HTML
33 lines
1.4 KiB
HTML
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<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 <strong>高度平衡</strong> 二叉搜索树。</p>
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<p><strong>高度平衡 </strong>二叉树是一棵满足「每个节点的左右两个子树的高度差的绝对值不超过 1 」的二叉树。</p>
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<p> </p>
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<p><strong>示例 1：</strong></p>
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<img alt="" src="https://assets.leetcode.com/uploads/2021/02/18/btree1.jpg" style="width: 302px; height: 222px;" />
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<pre>
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<strong>输入：</strong>nums = [-10,-3,0,5,9]
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<strong>输出：</strong>[0,-3,9,-10,null,5]
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<strong>解释：</strong>[0,-10,5,null,-3,null,9] 也将被视为正确答案：
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<img alt="" src="https://assets.leetcode.com/uploads/2021/02/18/btree2.jpg" style="width: 302px; height: 222px;" />
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</pre>
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<p><strong>示例 2：</strong></p>
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<img alt="" src="https://assets.leetcode.com/uploads/2021/02/18/btree.jpg" style="width: 342px; height: 142px;" />
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<pre>
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<strong>输入：</strong>nums = [1,3]
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<strong>输出：</strong>[3,1]
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<strong>解释：</strong>[1,null,3] 和 [3,1] 都是高度平衡二叉搜索树。
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</pre>
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<p> </p>
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<p><strong>提示：</strong></p>
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<ul>
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<li><code>1 <= nums.length <= 10<sup>4</sup></code></li>
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<li><code>-10<sup>4</sup> <= nums[i] <= 10<sup>4</sup></code></li>
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<li><code>nums</code> 按 <strong>严格递增</strong> 顺序排列</li>
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</ul>
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