【PConline杂谈】最近发布的旗舰机硬件配置差别不大,但用户的评价却大相径庭。很多人好奇为什么都是865处理器,但是体验差距这么大。其实这是由于优化的层次不同,所以在买手机的时候,不要只看865,更要注重各种体
What\'s the complexity of a recursive program to find fac开发者_运维知识库torial of a number n? My hunch is that it might be O(n).If you take multiplication as O(1), then yes, O(N) is correct. However