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Idiomatic rust

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This commit is contained in:
rongyi 2024-05-20 15:26:21 +08:00
parent b0d6ac58f1
commit 282d882d53
3 changed files with 14 additions and 14 deletions
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8
codes/rust/chapter_backtracking/preorder_traversal_i_compact.rs
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@ -10,7 +10,7 @@ use std::{cell::RefCell, rc::Rc};
use tree_node::{vec_to_tree, TreeNode}; use tree_node::{vec_to_tree, TreeNode};
/* 前序遍历：例题一 */ /* 前序遍历：例题一 */
fn pre_order(res: &mut Vec<Rc<RefCell<TreeNode>>>, root: Option<Rc<RefCell<TreeNode>>>) { fn pre_order(res: &mut Vec<Rc<RefCell<TreeNode>>>, root: Option<&Rc<RefCell<TreeNode>>>) {
if root.is_none() { if root.is_none() {
return; return;
} }
@ -19,8 +19,8 @@ fn pre_order(res: &mut Vec<Rc<RefCell<TreeNode>>>, root: Option<Rc<RefCell<TreeN
// 记录解 // 记录解
res.push(node.clone()); res.push(node.clone());
} }
pre_order(res, node.borrow().left.clone()); pre_order(res, node.borrow().left.as_ref());
pre_order(res, node.borrow().right.clone()); pre_order(res, node.borrow().right.as_ref());
} }
} }
@ -32,7 +32,7 @@ pub fn main() {
// 前序遍历 // 前序遍历
let mut res = Vec::new(); let mut res = Vec::new();
pre_order(&mut res, root); pre_order(&mut res, root.as_ref());
println!("\n输出所有值为 7 的节点"); println!("\n输出所有值为 7 的节点");
let mut vals = Vec::new(); let mut vals = Vec::new();

10
codes/rust/chapter_backtracking/preorder_traversal_ii_compact.rs
View File

@ -13,7 +13,7 @@ use tree_node::{vec_to_tree, TreeNode};
fn pre_order( fn pre_order(
res: &mut Vec<Vec<Rc<RefCell<TreeNode>>>>, res: &mut Vec<Vec<Rc<RefCell<TreeNode>>>>,
path: &mut Vec<Rc<RefCell<TreeNode>>>, path: &mut Vec<Rc<RefCell<TreeNode>>>,
root: Option<Rc<RefCell<TreeNode>>>, root: Option<&Rc<RefCell<TreeNode>>>,
) { ) {
if root.is_none() { if root.is_none() {
return; return;
@ -25,10 +25,10 @@ fn pre_order(
// 记录解 // 记录解
res.push(path.clone()); res.push(path.clone());
} }
pre_order(res, path, node.borrow().left.clone()); pre_order(res, path, node.borrow().left.as_ref());
pre_order(res, path, node.borrow().right.clone()); pre_order(res, path, node.borrow().right.as_ref());
// 回退 // 回退
path.remove(path.len() - 1); path.pop();
} }
} }
@ -41,7 +41,7 @@ pub fn main() {
// 前序遍历 // 前序遍历
let mut path = Vec::new(); let mut path = Vec::new();
let mut res = Vec::new(); let mut res = Vec::new();
pre_order(&mut res, &mut path, root); pre_order(&mut res, &mut path, root.as_ref());
println!("\n输出所有根节点到节点 7 的路径"); println!("\n输出所有根节点到节点 7 的路径");
for path in res { for path in res {

10
codes/rust/chapter_backtracking/preorder_traversal_iii_compact.rs
View File

@ -13,7 +13,7 @@ use tree_node::{vec_to_tree, TreeNode};
fn pre_order( fn pre_order(
res: &mut Vec<Vec<Rc<RefCell<TreeNode>>>>, res: &mut Vec<Vec<Rc<RefCell<TreeNode>>>>,
path: &mut Vec<Rc<RefCell<TreeNode>>>, path: &mut Vec<Rc<RefCell<TreeNode>>>,
root: Option<Rc<RefCell<TreeNode>>>, root: Option<&Rc<RefCell<TreeNode>>>,
) { ) {
// 剪枝 // 剪枝
if root.is_none() || root.as_ref().unwrap().borrow().val == 3 { if root.is_none() || root.as_ref().unwrap().borrow().val == 3 {
@ -26,10 +26,10 @@ fn pre_order(
// 记录解 // 记录解
res.push(path.clone()); res.push(path.clone());
} }
pre_order(res, path, node.borrow().left.clone()); pre_order(res, path, node.borrow().left.as_ref());
pre_order(res, path, node.borrow().right.clone()); pre_order(res, path, node.borrow().right.as_ref());
// 回退 // 回退
path.remove(path.len() - 1); path.pop();
} }
} }
@ -42,7 +42,7 @@ pub fn main() {
// 前序遍历 // 前序遍历
let mut path = Vec::new(); let mut path = Vec::new();
let mut res = Vec::new(); let mut res = Vec::new();
pre_order(&mut res, &mut path, root); pre_order(&mut res, &mut path, root.as_ref());
println!("\n输出所有根节点到节点 7 的路径，路径中不包含值为 3 的节点"); println!("\n输出所有根节点到节点 7 的路径，路径中不包含值为 3 的节点");
for path in res { for path in res {