Method combination_sum3

216-combination-sum-iii.rs:17–22

(k: i32, n: i32)

    }

    pub fn combination_sum3(k: i32, n: i32) -> Vec<Vec<i32>> {
        let mut path = vec![];
        let mut ret = vec![];
        Self::backtrace(9, k as usize, 1, &mut path, &mut ret, n);
        ret
    }
}

fn main() {