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64 lines
2.9 KiB
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<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，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>
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<p style="margin:0pt 0pt 0.0001pt; text-align:justify"> </p>
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<p>提醒一下，二叉搜索树满足下列约束条件：</p>
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<ul>
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<li>节点的左子树仅包含键<strong> 小于 </strong>节点键的节点。</li>
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<li>节点的右子树仅包含键<strong> 大于</strong> 节点键的节点。</li>
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<li>左右子树也必须是二叉搜索树。</li>
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</ul>
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<p> </p>
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<p><strong>示例 1：</strong></p>
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<p><strong><img alt="" src="https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2019/05/03/tree.png" style="height: 364px; width: 534px;" /></strong></p>
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<pre>
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<strong>输入：</strong>root<strong> </strong>=<strong> </strong>[4,1,6,0,2,5,7,null,null,null,3,null,null,null,8]
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<strong>输出：</strong>[30,36,21,36,35,26,15,null,null,null,33,null,null,null,8]
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</pre>
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<p><strong>示例 2：</strong></p>
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<pre>
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<strong>输入：</strong>root = [0,null,1]
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<strong>输出：</strong>[1,null,1]
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</pre>
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<p><strong>示例 3：</strong></p>
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<pre>
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<strong>输入：</strong>root = [1,0,2]
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<strong>输出：</strong>[3,3,2]
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</pre>
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<p><strong>示例 4：</strong></p>
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<pre>
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<strong>输入：</strong>root = [3,2,4,1]
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<strong>输出：</strong>[7,9,4,10]
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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>树中的节点数介于 <code>0</code> 和 <code>10<sup>4</sup></code><sup> </sup>之间。</li>
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<li>每个节点的值介于 <code>-10<sup>4</sup></code> 和 <code>10<sup>4</sup></code> 之间。</li>
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<li>树中的所有值 <strong>互不相同</strong> 。</li>
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<li>给定的树为二叉搜索树。</li>
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</ul>
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<p> </p>
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<p><meta charset="UTF-8" />注意：</p>
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<ul>
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<li>本题与主站 538 题相同： <a href="https://leetcode-cn.com/problems/convert-bst-to-greater-tree/">https://leetcode-cn.com/problems/convert-bst-to-greater-tree/</a></li>
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<li>本题与主站 1038 题相同：<a href="https://leetcode-cn.com/problems/binary-search-tree-to-greater-sum-tree/">https://leetcode-cn.com/problems/binary-search-tree-to-greater-sum-tree/</a></li>
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</ul>
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