struct Solution;
impl Solution {
fn rotate(nums: &mut Vec<i32>, k: i32) {
let k = k as usize % nums.len();
nums[..].reverse();
nums[0..k].reverse();
nums[k..].reverse();
// nums.rotate_right(k);
}
}
#[test]
fn test() {
let mut nums = vec![1, 2, 3, 4, 5, 6, 7];
Solution::rotate(&mut nums, 3);
assert_eq!(nums, vec![5, 6, 7, 1, 2, 3, 4]);
}