2225. Find Players With Zero or One Losses Medium

1/**
2 * [2225] Find Players With Zero or One Losses
3 *
4 * You are given an integer array matches where matches[i] = [winneri, loseri] indicates that the player winneri defeated player loseri in a match.
5 * Return a list answer of size 2 where:
6 * 
7 * 	answer[0] is a list of all players that have not lost any matches.
8 * 	answer[1] is a list of all players that have lost exactly one match.
9 * 
10 * The values in the two lists should be returned in increasing order.
11 * Note:
12 * 
13 * 	You should only consider the players that have played at least one match.
14 * 	The testcases will be generated such that no two matches will have the same outcome.
15 * 
16 *  
17 * Example 1:
18 * 
19 * Input: matches = [[1,3],[2,3],[3,6],[5,6],[5,7],[4,5],[4,8],[4,9],[10,4],[10,9]]
20 * Output: [[1,2,10],[4,5,7,8]]
21 * Explanation:
22 * Players 1, 2, and 10 have not lost any matches.
23 * Players 4, 5, 7, and 8 each have lost one match.
24 * Players 3, 6, and 9 each have lost two matches.
25 * Thus, answer[0] = [1,2,10] and answer[1] = [4,5,7,8].
26 * 
27 * Example 2:
28 * 
29 * Input: matches = [[2,3],[1,3],[5,4],[6,4]]
30 * Output: [[1,2,5,6],[]]
31 * Explanation:
32 * Players 1, 2, 5, and 6 have not lost any matches.
33 * Players 3 and 4 each have lost two matches.
34 * Thus, answer[0] = [1,2,5,6] and answer[1] = [].
35 * 
36 *  
37 * Constraints:
38 * 
39 * 	1 <= matches.length <= 10^5
40 * 	matches[i].length == 2
41 * 	1 <= winneri, loseri <= 10^5
42 * 	winneri != loseri
43 * 	All matches[i] are unique.
44 * 
45 */
46pub struct Solution {}
47
48// problem: https://leetcode.com/problems/find-players-with-zero-or-one-losses/
49// discuss: https://leetcode.com/problems/find-players-with-zero-or-one-losses/discuss/?currentPage=1&orderBy=most_votes&query=
50
51// submission codes start here
52
53impl Solution {
54    pub fn find_winners(matches: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
55        vec![]
56    }
57}
58
59// submission codes end
60
61#[cfg(test)]
62mod tests {
63    use super::*;
64
65    #[test]
66    fn test_2225() {
67    }
68}
69