1342. Number of Steps to Reduce a Number to Zero

class Solution {
    public int numberOfSteps(int num) 
    {

         
        return helper(num, 0);


        
    }

    private int helper(int num, int steps)
    {

        if(num ==  0)
        {
            return steps;

        }

        if(num %2 == 0)
        {

            return helper(num/2, steps+1);

        }

        return helper( num-1,  steps+1);


    }




}