Find the first player to win k games in a row

#[test]
fn test_example1() {
    let start = std::time::Instant::now();
    let val = Solution::find_winning_player(vec![4, 2, 6, 3, 9], 2);
    let expected = 2;
    log_result!(val == expected, "test_example1", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_example2() {
    let start = std::time::Instant::now();
    let val = Solution::find_winning_player(vec![2, 5, 4], 3);
    let expected = 1;
    log_result!(val == expected, "test_example2", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_first_player_dominates() {
    let start = std::time::Instant::now();
    let val = Solution::find_winning_player(vec![10, 1, 2, 3], 3);
    let expected = 0;
    log_result!(val == expected, "test_first_player_dominates", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_k_equals_n_minus_one() {
    let start = std::time::Instant::now();
    let val = Solution::find_winning_player(vec![5, 3, 1, 4, 2], 4);
    let expected = 0;
    log_result!(val == expected, "test_k_equals_n_minus_one", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_k_is_one() {
    let start = std::time::Instant::now();
    let val = Solution::find_winning_player(vec![1, 5, 2, 3], 1);
    let expected = 1;
    log_result!(val == expected, "test_k_is_one", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_large_k_returns_max() {
    let start = std::time::Instant::now();
    let val = Solution::find_winning_player(vec![3, 1, 4, 2, 5], 100);
    let expected = 4;
    log_result!(val == expected, "test_large_k_returns_max", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_two_players() {
    let start = std::time::Instant::now();
    let val = Solution::find_winning_player(vec![2, 7], 1);
    let expected = 1;
    log_result!(val == expected, "test_two_players", start, &expected, &val);
    assert_eq!(val, expected);
}