LeetCode Rust - 344 - 反转字符串
解一，双指针翻转
pub fn reverse_string(s: &mut Vec<char>) {
let mut left = 0usize;
let mut right = s.len() - 1;
while left < right {
s.swap(left, right);
left += 1;
right -= 1;
}
}
时间：$O(n)$ 空间：$O(1)$
图谱
pub fn reverse_string(s: &mut Vec<char>) {
let mut left = 0usize;
let mut right = s.len() - 1;
while left < right {
s.swap(left, right);
left += 1;
right -= 1;
}
}
时间：$O(n)$ 空间：$O(1)$
图谱