프로그래머스 - 1로 만들기(JAVA)

 

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class Solution {
    public int solution(int[] num_list) {
        int count = 0;
        for (int i = 0; i < num_list.length; i++) {
            int a = num_list[i];

            while (a != 1) {
                if (a % 2 == 0) {
                    a = a / 2;
                    count++;
                } else {
                    a = (a - 1) / 2;
                    count++;
                }
            }
        }
        return count;
    }
}