[프로그래머스] 모의고사(Java) *

 

 

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나의 풀이

import java.util.List;
import java.util.ArrayList;

class Solution {
    public List<Integer> solution(int[] answers) {
        int[] number1 = {1, 2, 3, 4, 5};
        int[] number2 = {2, 1, 2, 3, 2, 4, 2, 5};
        int[] number3 = {3, 3, 1, 1, 2, 2, 4, 4, 5, 5};
        int[] score = new int[3];
        
        for(int i = 0; i < answers.length ; i++){
            if(answers[i] == number1[i % 5]){
                score[0] ++;
            }
            if (answers[i] == number2[i % 8]){
                score[1] ++;
            }
            if (answers[i] == number3[i % 10]){
                score[2] ++;
            }
        }
        
        int maxScore = Math.max(score[0], Math.max(score[1], score[2]));
        List<Integer> list = new ArrayList<>();
        
        for (int i = 0; i < 3; i++) {
            if (maxScore == score[i]) list.add(i + 1);
        }
        
        return list;
    }
}

 

 

다른 사람의 풀이

import java.util.*;

class Solution {
    public static int[] solution(int[] answers) {
        int[][] patterns = {
                {1, 2, 3, 4, 5},
                {2, 1, 2, 3, 2, 4, 2, 5},
                {3, 3, 1, 1, 2, 2, 4, 4, 5, 5}
        };

        int[] hit = new int[3];
        for(int i = 0; i < hit.length; i++) {
            for(int j = 0; j < answers.length; j++) {
                if(patterns[i][j % patterns[i].length] == answers[j]) hit[i]++;
            }
        }

        int max = Math.max(hit[0], Math.max(hit[1], hit[2]));
        List<Integer> list = new ArrayList<>();
        for(int i = 0; i < hit.length; i++)
            if(max == hit[i]) list.add(i + 1);

        int[] answer = new int[list.size()];
        int cnt = 0;
        for(int num : list)
            answer[cnt++] = num;
        return answer;
    }
}