1342_Number_of_Steps_to_Reduce_a_Number_to_Zero.cpp

class Solution {
public:
    int numberOfSteps(int num) {
        int cnt = 0;
        while (num > 0) {
            if ( num % 2 == 0) {
                num /= 2;
            } else {
                num--;
            }
            cnt++;
        }
        return cnt;
    }
};