添加 0203.移除链表元素 0344.反转字符串 0376.摆动序列 0541.反转字符串II 剑指Offer05.替换空格 Rust版本

添加 0203.移除链表元素 0344.反转字符串 0376.摆动序列 0541.反转字符串II 剑指Offer05.替换空格 Rust版本
This commit is contained in:
BaoTaoqi
2022-07-11 14:50:03 +08:00
parent e2d16c5894
commit c265c9220c
5 changed files with 111 additions and 8 deletions

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@ -487,17 +487,19 @@ RUST:
// }
impl Solution {
pub fn remove_elements(head: Option<Box<ListNode>>, val: i32) -> Option<Box<ListNode>> {
let mut head = head;
let mut dummy_head = ListNode::new(0);
let mut cur = &mut dummy_head;
while let Some(mut node) = head {
head = std::mem::replace(&mut node.next, None);
if node.val != val {
cur.next = Some(node);
let mut dummyHead = Box::new(ListNode::new(0));
dummyHead.next = head;
let mut cur = dummyHead.as_mut();
// 使用take()替换std::men::replace(&mut node.next, None)达到相同的效果,并且更普遍易读
while let Some(nxt) = cur.next.take() {
if nxt.val == val {
cur.next = nxt.next;
} else {
cur.next = Some(nxt);
cur = cur.next.as_mut().unwrap();
}
}
dummy_head.next
dummyHead.next
}
}
```

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@ -238,6 +238,22 @@ func reverseString(_ s: inout [Character]) {
```
Rust:
```Rust
impl Solution {
pub fn reverse_string(s: &mut Vec<char>) {
let (mut left, mut right) = (0, s.len()-1);
while left < right {
let temp = s[left];
s[left] = s[right];
s[right] = temp;
left += 1;
right -= 1;
}
}
}
```
C:
```c
void reverseString(char* s, int sSize){

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@ -298,6 +298,29 @@ var wiggleMaxLength = function(nums) {
};
```
### Rust
**贪心**
```Rust
impl Solution {
pub fn wiggle_max_length(nums: Vec<i32>) -> i32 {
let len = nums.len() as usize;
if len <= 1 {
return len as i32;
}
let mut preDiff = 0;
let mut curDiff = 0;
let mut result = 1;
for i in 0..len-1 {
curDiff = nums[i+1] - nums[i];
if (preDiff <= 0 && curDiff > 0) || (preDiff >= 0 && curDiff < 0) {
result += 1;
preDiff = curDiff;
}
}
result
}
}
```
### C
**贪心**

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@ -389,5 +389,36 @@ object Solution {
}
}
```
Rust:
```Rust
impl Solution {
pub fn reverse(s: &mut Vec<char>, mut begin: usize, mut end: usize){
while begin < end {
let temp = s[begin];
s[begin] = s[end];
s[end] = temp;
begin += 1;
end -= 1;
}
}
pub fn reverse_str(s: String, k: i32) -> String {
let len = s.len();
let k = k as usize;
let mut s = s.chars().collect::<Vec<_>>();
for i in (0..len).step_by(2 * k) {
if i + k < len {
Self::reverse(&mut s, i, i + k - 1);
}
else {
Self::reverse(&mut s, i, len - 1);
}
}
s.iter().collect::<String>()
}
}
```
-----------------------
<div align="center"><img src=https://code-thinking.cdn.bcebos.com/pics/01二维码一.jpg width=500> </img></div>

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@ -506,6 +506,37 @@ function spaceLen($s){
}
```
Rust
```Rust
impl Solution {
pub fn replace_space(s: String) -> String {
let mut len: usize = s.len();
let mut s = s.chars().collect::<Vec<char>>();
let mut count = 0;
for i in &s {
if i.is_ascii_whitespace() {
count += 1;
}
}
let mut new_len = len + count * 2;
s.resize(new_len, ' ');
while len < new_len {
len -= 1;
new_len -= 1;
if s[len].is_ascii_whitespace() {
s[new_len] = '0';
s[new_len - 1] = '2';
s[new_len - 2] = '%';
new_len -= 2;
}
else { s[new_len] = s[len] }
}
s.iter().collect::<String>()
}
}
```
-----------------------
<div align="center"><img src=https://code-thinking.cdn.bcebos.com/pics/01二维码一.jpg width=500> </img></div>