2주차

package prog;

public class 이주차 {
    public static void main(String[] args) {
        Solution s = new Solution();
        //System.out.println(s.solution(new int[][] {{100,90,98,88,65},{50,45,99,85,77},{47,88,95,80,67},{61,57,100,80,65},{24,90,94,75,65}}));
        System.out.println(s.solution(new int[][] {{70,49,90},{68,50,38},{73,31,100}}));
    }
}


class Solution {
    public String solution(int[][] scores) {
        String answer = "";
        int N = scores.length;

        double[] socoreList = new double[N];
        for (int i = 0; i < N; i++) {
            int myScore = scores[i][i];
            int cnt = 0;
            int total = 0;
            int maxValue = Integer.MIN_VALUE;
            int minValue = Integer.MAX_VALUE;

            for (int j = 0; j < N; j++) {
                if(myScore==scores[j][i]){
                    cnt++;
                }
                maxValue = Math.max(maxValue,scores[j][i]);
                minValue = Math.min(minValue,scores[j][i]);
                total+=scores[j][i];
            }
            if( (maxValue==myScore ||minValue==myScore) && cnt==1){
                total-=myScore;
                answer+= checkGrade((double)total/(N-1));
            }
            else{
                answer += checkGrade((double)total/N);
            }

        }
        System.out.println("answer = " + answer);
        return answer;
    }

    private String checkGrade(double score) {
        if(score>=90) return "A";
        else if(score>=80) return "B";
        else if(score>=70) return "C";
        else if(score>=50) return "D";
        else return "F";
    }
}