[프로그래머스] 모의고사

프로그래머스 1단계
모의고사

https://programmers.co.kr/learn/challenges

 

문제 설명

 

 

 

 

풀이

 

import java.util.*;
import java.lang.*;

class Solution {
    public int[] solution(int[] answers) {
        
        int student1[] = {1, 2, 3, 4, 5};
        int student2[] = {2, 1, 2, 3, 2, 4, 2, 5};
        int student3[] = {3, 3, 1, 1, 2, 2, 4, 4, 5, 5};
        
        ArrayList<Integer> topStudent = new ArrayList<Integer>();
        int score[] = new int[3];
        
        for(int i=0; i<answers.length; i++) {
            if(answers[i] == student1[i % 5]) {
                score[0]++;
            }
            if(answers[i] == student2[i % 8]) {
                score[1]++;
            }
            if(answers[i] == student3[i % 10]) {
                score[2]++;
            }
        }
        
        int maxValue = Math.max(Math.max(score[0], score[1]), score[2]);

        
        for(int i=0; i<score.length; i++) {
            if(score[i] == maxValue) {
                topStudent.add(i);
            }
        }
        
        int answer[] = new int[topStudent.size()];
        
        for(int i=0; i<answer.length; i++) {
            answer[i] = topStudent.get(i);
        }
        System.out.println(Arrays.toString(answer));
        return answer;
    }
}