pub fn judge_circle(moves: String) -> bool {
    let mut x = 0;
    let mut y = 0;
    for m in moves.chars() {
        match m {
            'U' => x = x + 1,
            'D' => x = x - 1,
            'L' => y = y + 1,
            'R' => y = y - 1,
            _ => {},
        }
    }
    return y == 0 && x == 0; 
}

pub fn main() {
    println!("Expected: true");
    println!("Got: {}", judge_circle("UDRULD".to_string()));
}