1342. Number of Steps to Reduce a Number to Zero刷题笔记

easy题，按照逻辑写就行了

class Solution:
    def numberOfSteps(self, num: int) -> int:
        step = 0
        while num:
            if num % 2 == 0:
                num = num/2
            else:
                num -= 1
            step += 1
        return step