Find the original array of prefix xor

#[test]
fn t1() {
    let start = std::time::Instant::now();
    let val = Solution::find_array(vec![5, 2, 0, 3, 1]);
    let expected = vec![5, 7, 2, 3, 2];
    log_result!(val == expected, "t1", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn t2() {
    let start = std::time::Instant::now();
    let val = Solution::find_array(vec![13]);
    let expected = vec![13];
    log_result!(val == expected, "t2", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn t3() {
    let start = std::time::Instant::now();
    let val = Solution::find_array(vec![0, 0, 0]);
    let expected = vec![0, 0, 0];
    log_result!(val == expected, "t3", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn t4() {
    let start = std::time::Instant::now();
    let val = Solution::find_array(vec![1, 3]);
    let expected = vec![1, 2];
    log_result!(val == expected, "t4", start, &expected, &val);
    assert_eq!(val, expected);
}