feat: add solutions to lc problem: No.1022

No.1022.Sum of Root To Leaf Binary Numbers
This commit is contained in:
YangFong 2022-05-30 14:57:39 +08:00
parent ddd6a958ef
commit ba518558c7
4 changed files with 215 additions and 0 deletions

View File

@ -169,6 +169,81 @@ func sumRootToLeaf(root *TreeNode) int {
}
```
### **TypeScript**
```ts
/**
* Definition for a binary tree node.
* class TreeNode {
* val: number
* left: TreeNode | null
* right: TreeNode | null
* constructor(val?: number, left?: TreeNode | null, right?: TreeNode | null) {
* this.val = (val===undefined ? 0 : val)
* this.left = (left===undefined ? null : left)
* this.right = (right===undefined ? null : right)
* }
* }
*/
function sumRootToLeaf(root: TreeNode | null): number {
const dfs = (root: TreeNode | null, num: number) => {
if (root == null) {
return 0;
}
const { val, left, right } = root;
num = (num << 1) | val;
if (left == null && right == null) {
return num;
}
return dfs(left, num) + dfs(right, num);
};
return dfs(root, 0);
}
```
### **Rust**
```rust
// 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(root: &Option<Rc<RefCell<TreeNode>>>, mut num: i32) -> i32 {
if root.is_none() {
return 0;
}
let root = root.as_ref().unwrap().borrow();
num = (num << 1) | root.val;
if root.left.is_none() && root.right.is_none() {
return num;
}
Self::dfs(&root.left, num) + Self::dfs(&root.right, num)
}
pub fn sum_root_to_leaf(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
Self::dfs(&root, 0)
}
}
```
### **...**
```

View File

@ -159,6 +159,81 @@ func sumRootToLeaf(root *TreeNode) int {
}
```
### **TypeScript**
```ts
/**
* Definition for a binary tree node.
* class TreeNode {
* val: number
* left: TreeNode | null
* right: TreeNode | null
* constructor(val?: number, left?: TreeNode | null, right?: TreeNode | null) {
* this.val = (val===undefined ? 0 : val)
* this.left = (left===undefined ? null : left)
* this.right = (right===undefined ? null : right)
* }
* }
*/
function sumRootToLeaf(root: TreeNode | null): number {
const dfs = (root: TreeNode | null, num: number) => {
if (root == null) {
return 0;
}
const { val, left, right } = root;
num = (num << 1) | val;
if (left == null && right == null) {
return num;
}
return dfs(left, num) + dfs(right, num);
};
return dfs(root, 0);
}
```
### **Rust**
```rust
// 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(root: &Option<Rc<RefCell<TreeNode>>>, mut num: i32) -> i32 {
if root.is_none() {
return 0;
}
let root = root.as_ref().unwrap().borrow();
num = (num << 1) | root.val;
if root.left.is_none() && root.right.is_none() {
return num;
}
Self::dfs(&root.left, num) + Self::dfs(&root.right, num)
}
pub fn sum_root_to_leaf(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
Self::dfs(&root, 0)
}
}
```
### **...**
```

View File

@ -0,0 +1,37 @@
// 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(root: &Option<Rc<RefCell<TreeNode>>>, mut num: i32) -> i32 {
if root.is_none() {
return 0;
}
let root = root.as_ref().unwrap().borrow();
num = (num << 1) | root.val;
if root.left.is_none() && root.right.is_none() {
return num;
}
Self::dfs(&root.left, num) + Self::dfs(&root.right, num)
}
pub fn sum_root_to_leaf(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
Self::dfs(&root, 0)
}
}

View File

@ -0,0 +1,28 @@
/**
* Definition for a binary tree node.
* class TreeNode {
* val: number
* left: TreeNode | null
* right: TreeNode | null
* constructor(val?: number, left?: TreeNode | null, right?: TreeNode | null) {
* this.val = (val===undefined ? 0 : val)
* this.left = (left===undefined ? null : left)
* this.right = (right===undefined ? null : right)
* }
* }
*/
function sumRootToLeaf(root: TreeNode | null): number {
const dfs = (root: TreeNode | null, num: number) => {
if (root == null) {
return 0;
}
const { val, left, right } = root;
num = (num << 1) | val;
if (left == null && right == null) {
return num;
}
return dfs(left, num) + dfs(right, num);
};
return dfs(root, 0);
}