leet-code/check-if-a-string-contains-all-binary-codes-of-size-k/sol.rs

use std::collections::HashSet;

impl Solution {
    pub fn has_all_codes(s: String, k: i32) -> bool {
        s.into_bytes()
            .windows(k as usize)
            .collect::<HashSet<_>>()
            .len() == 1 << k
    }
}