rustgym 0.2.0

struct Solution;

impl Solution {
    fn find_min_arrow_shots(mut points: Vec<Vec<i32>>) -> i32 {
        let n = points.len();
        if n == 0 {
            return 0;
        }
        points.sort_by_key(|p| p[1]);
        let mut end = points[0][1];
        let mut res = 1;
        for i in 1..n {
            if points[i][0] <= end {
                continue;
            }
            end = points[i][1];
            res += 1;
        }
        res
    }
}

#[test]
fn test() {
    let points = vec_vec_i32![[10, 16], [2, 8], [1, 6], [7, 12]];
    let res = 2;
    assert_eq!(Solution::find_min_arrow_shots(points), res);
}