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Merge pull request #1779 from fwqaaq/patch-4
Update 0700.二叉搜索树中的搜索.md about rust
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@ -414,6 +414,56 @@ 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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use std::cell::RefCell;
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use std::rc::Rc;
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impl Solution {
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pub fn search_bst(
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root: Option<Rc<RefCell<TreeNode>>>,
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val: i32,
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) -> Option<Rc<RefCell<TreeNode>>> {
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if root.is_none() || root.as_ref().unwrap().borrow().val == val {
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return root;
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}
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let node_val = root.as_ref().unwrap().borrow().val;
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if node_val > val {
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return Self::search_bst(root.as_ref().unwrap().borrow().left.clone(), val);
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}
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if node_val < val {
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return Self::search_bst(root.unwrap().borrow().right.clone(), val);
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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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迭代:
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```rust
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use std::cell::RefCell;
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use std::rc::Rc;
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use std::cmp;
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impl Solution {
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pub fn search_bst(
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mut root: Option<Rc<RefCell<TreeNode>>>,
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val: i32,
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) -> Option<Rc<RefCell<TreeNode>>> {
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while let Some(ref node) = root.clone() {
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match val.cmp(&node.borrow().val) {
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cmp::Ordering::Less => root = node.borrow().left.clone(),
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cmp::Ordering::Equal => return root,
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cmp::Ordering::Greater => root = node.borrow().right.clone(),
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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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<img src="../pics/网站星球宣传海报.jpg" width="1000"/>
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