Function odds::slice::rotate_left

pub fn rotate_left<T>(data: &mut [T], steps: usize)

Rotate steps towards lower indices.

The steps to rotate is computed modulo the length of data, so any step value is acceptable. This function does not panic.

use odds::slice::rotate_left;

let mut data = [1, 2, 3, 4];
rotate_left(&mut data, 1);
assert_eq!(&data, &[2, 3, 4, 1]);
rotate_left(&mut data, 2);
assert_eq!(&data, &[4, 1, 2, 3]);