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Update 0669.修剪二叉搜索树,添加C#
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@ -567,6 +567,23 @@ impl Solution {
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}
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}
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```
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### C#
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```C#
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// 递归
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public TreeNode TrimBST(TreeNode root, int low, int high)
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{
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if (root == null) return null;
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if (root.val < low)
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return TrimBST(root.right, low, high);
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if (root.val > high)
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return TrimBST(root.left, low, high);
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root.left = TrimBST(root.left, low, high);
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root.right = TrimBST(root.right, low, high);
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return root;
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}
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```
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<p align="center">
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