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Merge pull request #1797 from fwqaaq/patch-9
Update 0235.二叉搜索树的最近公共祖先.md about rust
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@ -429,6 +429,67 @@ object Solution {
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}
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```
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## rust
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递归:
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```rust
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impl Solution {
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pub fn lowest_common_ancestor(
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root: Option<Rc<RefCell<TreeNode>>>,
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p: Option<Rc<RefCell<TreeNode>>>,
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q: Option<Rc<RefCell<TreeNode>>>,
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) -> Option<Rc<RefCell<TreeNode>>> {
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let q_val = q.as_ref().unwrap().borrow().val;
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let p_val = p.as_ref().unwrap().borrow().val;
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let root_val = root.as_ref().unwrap().borrow().val;
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if root_val > q_val && root_val > p_val {
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return Self::lowest_common_ancestor(
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root.as_ref().unwrap().borrow().left.clone(),
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p,
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q,
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);
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};
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if root_val < q_val && root_val < p_val {
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return Self::lowest_common_ancestor(
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root.as_ref().unwrap().borrow().right.clone(),
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p,
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q,
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);
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}
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root
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}
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}
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```
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迭代:
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```rust
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impl Solution {
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pub fn lowest_common_ancestor(
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mut root: Option<Rc<RefCell<TreeNode>>>,
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p: Option<Rc<RefCell<TreeNode>>>,
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q: Option<Rc<RefCell<TreeNode>>>,
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) -> Option<Rc<RefCell<TreeNode>>> {
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let p_val = p.unwrap().borrow().val;
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let q_val = q.unwrap().borrow().val;
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while let Some(node) = root.clone() {
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let root_val = node.borrow().val;
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if root_val > q_val && root_val > p_val {
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root = node.borrow().left.clone();
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} else if root_val < q_val && root_val < p_val {
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root = node.borrow().right.clone();
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} else {
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return root;
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}
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}
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None
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}
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}
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```
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<p align="center">
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<a href="https://programmercarl.com/other/kstar.html" target="_blank">
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