[프로그래머스_Lv1] 10~12

10) 배열의 평균값

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

 

11) 짝수와 홀수

class Solution {
    public String solution(int num) {
        String answer = "";
        if (num%2 == 0) {
            answer = "Even";
        } else {
            answer = "Odd";
        }
        return answer;
    }
}

 

12) 평균 구하기

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