message: Update number-of-steps-to-reduce-a-number-to-zero.py
diff: @@ -9,9 +9,6 @@ class Solution(object):
  """
  result = 0
  while num:
  - if num%2:
  - num -= 1
  - else:
  + result += 2 if num%2 else 1
  num //= 2
  - result += 1
  - return result
  + return result-1
  