Merge pull request #1779 from fwqaaq/patch-4

Update 0700.二叉搜索树中的搜索.md about rust
This commit is contained in:
程序员Carl
2022-12-09 09:39:45 +08:00
committed by GitHub

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@ -414,6 +414,56 @@ object Solution {
}
```
### rust
递归:
```rust
use std::cell::RefCell;
use std::rc::Rc;
impl Solution {
pub fn search_bst(
root: Option<Rc<RefCell<TreeNode>>>,
val: i32,
) -> Option<Rc<RefCell<TreeNode>>> {
if root.is_none() || root.as_ref().unwrap().borrow().val == val {
return root;
}
let node_val = root.as_ref().unwrap().borrow().val;
if node_val > val {
return Self::search_bst(root.as_ref().unwrap().borrow().left.clone(), val);
}
if node_val < val {
return Self::search_bst(root.unwrap().borrow().right.clone(), val);
}
None
}
}
```
迭代:
```rust
use std::cell::RefCell;
use std::rc::Rc;
use std::cmp;
impl Solution {
pub fn search_bst(
mut root: Option<Rc<RefCell<TreeNode>>>,
val: i32,
) -> Option<Rc<RefCell<TreeNode>>> {
while let Some(ref node) = root.clone() {
match val.cmp(&node.borrow().val) {
cmp::Ordering::Less => root = node.borrow().left.clone(),
cmp::Ordering::Equal => return root,
cmp::Ordering::Greater => root = node.borrow().right.clone(),
};
}
None
}
}
```
<p align="center">
<a href="https://programmercarl.com/other/kstar.html" target="_blank">
<img src="../pics/网站星球宣传海报.jpg" width="1000"/>