struct Solution;
impl Solution {
fn read_binary_watch(num: i32) -> Vec<String> {
let mut res: Vec<String> = vec![];
for i in 0..11 {
for j in 0..60 {
if i32::count_ones(i) + i32::count_ones(j) == num as u32 {
res.push(format!("{}:{:02}", i, j));
}
}
}
res
}
}
#[test]
fn test() {
let num = 1;
let mut res: Vec<String> =
vec_string!["1:00", "2:00", "4:00", "8:00", "0:01", "0:02", "0:04", "0:08", "0:16", "0:32"];
res.sort_unstable();
assert_eq!(Solution::read_binary_watch(num), res);
}