get_class.rs

fn get_class(visited_bits: u32, guess: &[i32; N]) -> i32 {
    let mut class_id = 0;
    let mut multiplier: i32 = 1;
    let d = (D + 1) as i32;
    for pos in 0..guess.len() {
        let digit = guess[pos];
        if visited_bits & (1 << digit) != 0 {
            class_id += multiplier * (digit + 1);
        }
        multiplier *= d;
    }
    return class_id;
}