The code snippet takes in a 2D array of matches, where each match is represented by an array of two integers (winner and loser). It determines the winners in three categories: zero losses, one loss, and more than one loss. It

Find Players With Zero or One Losses.md

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import java.util.*;

class Solution {
    public int[][] findWinners(int[][] matches) {
        Set<Integer> zeroLoss = new HashSet<>();
        Set<Integer> oneLoss = new HashSet<>();
        Set<Integer> moreLoss = new HashSet<>();

        for (int[] match : matches) {
            int winner = match[0];
            int loser = match[1];

            // Add winner.
            if (!oneLoss.contains(winner) && !moreLoss.contains(winner)) {
                zeroLoss.add(winner);
            }

            // Add or move loser.
            if (zeroLoss.contains(loser)) {
                zeroLoss.remove(loser);
                oneLoss.add(loser);
            } else if (oneLoss.contains(loser)) {
                oneLoss.remove(loser);
                moreLoss.add(loser);
            } else if (moreLoss.contains(loser)) {
                continue;
            } else {
                oneLoss.add(loser);
            }
        }

        List<List<Integer>> answerList = new ArrayList<>();
        answerList.add(new ArrayList<>(zeroLoss));
        answerList.add(new ArrayList<>(oneLoss));

        int[][] answer = new int[2][];
        for (int i = 0; i < 2; i++) {
            answer[i] = new int[answerList.get(i).size()];
            for (int j = 0; j < answerList.get(i).size(); j++) {
                answer[i][j] = answerList.get(i).get(j);
            }
        }

        // Sorting winners in each category.
        Arrays.sort(answer[0]);
        Arrays.sort(answer[1]);

        return answer;
    }
}

Associated Context
Type	Code Snippet ( .java )
Associated Tags	Java HashSet Find Winners Matching Winner Add or Move loser ArrayList Sorting winners in each category List of integers Search algorithm arrays findWinners method Set data structure HashSet data structure int[][] matches sort method
📝 Custom Description	PLEASE UPVOTE IF IT HELPED Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview.
💡 Smart Description	This code snippet finds the winners in a given list of matches. It uses two sets to keep track of zero and or move losers, then sorts them in each category using an array as well as sorting it in The code snippet takes in a 2D array of matches, where each match is represented by an array of two integers (winner and loser). It determines the winners in three categories: zero losses, one loss, and more than one loss. It
🔎 Suggested Searches	Java code to find winners in a category
Related Links	https://leetcode.com/problems/find-players-with-zero-or-one-losses/discuss/4566935/Beats-98.22-Users-oror-C%2B%2BJavaPythonJavaScript-oror-EXPLAINED https://leetcode.com/problems/find-players-with-zero-or-one-losses/ https://leetcode.com/problems/find-players-with-zero-or-one-losses/discuss/ https://leetcode.com/problems/find-players-with-zero-or-one-losses/discuss/?currentPage=1&orderBy=hot&query= https://www.geeksforgeeks.org/arraylist-in-java/ https://www.geeksforgeeks.org/string-class-in-java/ https://www.geeksforgeeks.org/arrays-in-java/ https://www.techiedelight.com/bubble-sort-iterative-recursive/ https://www.geeksforgeeks.org/ https://stackoverflow.com/ https://www.programiz.com/ https://www.hackerrank.com/ https://www.w3schools.com/ https://www.baeldung.com/ https://leetcode.com/ https://www.javatpoint.com/
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