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Solution.rs
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// Definition for singly-linked list.
// #[derive(PartialEq, Eq, Clone, Debug)]
// pub struct ListNode {
// pub val: i32,
// pub next: Option<Box<ListNode>>
// }
//
// impl ListNode {
// #[inline]
// fn new(val: i32) -> Self {
// ListNode {
// next: None,
// val
// }
// }
// }
// Definition for a binary tree node.
// #[derive(Debug, PartialEq, Eq)]
// pub struct TreeNode {
// pub val: i32,
// pub left: Option<Rc<RefCell<TreeNode>>>,
// pub right: Option<Rc<RefCell<TreeNode>>>,
// }
//
// impl TreeNode {
// #[inline]
// pub fn new(val: i32) -> Self {
// TreeNode {
// val,
// left: None,
// right: None
// }
// }
// }
use std::rc::Rc;
use std::cell::RefCell;
impl Solution {
fn dfs(head: &Option<Box<ListNode>>, root: &Option<Rc<RefCell<TreeNode>>>) -> bool {
if head.is_none() {
return true;
}
if root.is_none() {
return false;
}
let node = head.as_ref().unwrap();
let root = root.as_ref().unwrap().borrow();
if node.val != root.val {
return false;
}
Self::dfs(&node.next, &root.left) || Self::dfs(&node.next, &root.right)
}
fn my_is_sub_path(head: &Option<Box<ListNode>>, root: &Option<Rc<RefCell<TreeNode>>>) -> bool {
if root.is_none() {
return false;
}
let node = root.as_ref().unwrap().borrow();
Self::dfs(head, root)
|| Self::my_is_sub_path(head, &node.left)
|| Self::my_is_sub_path(head, &node.right)
}
pub fn is_sub_path(head: Option<Box<ListNode>>, root: Option<Rc<RefCell<TreeNode>>>) -> bool {
Self::my_is_sub_path(&head, &root)
}
}