자바 알고리즘 연습(2)

 

각도기

class Solution {
    public int solution(int angle) {
        int answer = 0;
        
        if (0 < angle && angle < 90){
            answer = 1;
        } else if(angle == 90) {
            answer = 2;
        } else if(90 < angle && angle < 180) {
            answer = 3;
        } else if(angle == 180) {
            answer = 4;
        }
        
        return answer;
    }
}

 

짝수의 합

class Solution {
    public int solution(int n) {
        int answer = 0;
        for (int i = 1; i <= n; i++){
            if (i % 2 == 0){
                answer += i;
            }
        }
        return answer;
    }
}

 

배열의 평균값

• 배열의 길이를 조회할 때는 배열이름.length

class Solution {
    public double solution(int[] numbers) {
        double answer = 0;
        for (int i = 0; i < numbers.length; i++){
            answer += numbers[i];
        }
        answer /= numbers.length;
        return answer;
    }
}

 

짝수와 홀수

class Solution {
    public double solution(int[] numbers) {
        double answer = 0;
        for (int i = 0; i < numbers.length; i++){
            answer += numbers[i];
        }
        answer /= numbers.length;
        return answer;
    }
}

 

평균 구하기

class Solution {
    public double solution(int[] numbers) {
        double answer = 0;
        for (int i = 0; i < numbers.length; i++){
            answer += numbers[i];
        }
        answer /= numbers.length;
        return answer;
    }
}