my python reference

  class Solution(object): def countOdds(self, low, high): """ (not optimal) count=0 for i in range(low,high+1): if i%2!=0: count+=1 return count""" (optimal solution) if low%2!=0 or high%2!=0: return (high-low)/2+1 else: return ((high-low)/2) """ :type low: int :type high: int :rtype: int """