通过投票对团队排名

/*
 * Problem Approach (Java Stream):
 * 1. Similar to the above approach, we will use a map to store each team's vote count for each rank.
 * 2. We will then use Java Streams to sort the teams based on the ranking rules.
 * 3. Finally, we concatenate the sorted teams into a string and return it.
 */

import java.util.*;
import java.util.stream.Collectors;

public class RankTeamsStream {
    public String rankTeams(String[] votes) {
        int teamCount = votes[0].length();
        Map<Character, int[]> voteMap = new HashMap<>();
        for (char team : votes[0].toCharArray()) {
            voteMap.put(team, new int[teamCount]);
        }
        for (String vote : votes) {
            for (int i = 0; i < vote.length(); i++) {
                voteMap.get(vote.charAt(i))[i]++;
            }
        }
        return voteMap.entrySet().stream()
            .sorted((entry1, entry2) -> {
                for (int i = 0; i < teamCount; i++) {
                    if (entry1.getValue()[i] != entry2.getValue()[i]) {
                        return entry2.getValue()[i] - entry1.getValue()[i];
                    }
                }
                return entry1.getKey() - entry2.getKey();
            })
            .map(Map.Entry::getKey)
            .map(String::valueOf)
            .collect(Collectors.joining());
    }
}