Right, 'cause that means either I've been handed zero elements which mean there's really no work to be done or I've been handed one element which is a vacuous truth that it's sorted, right?

因为如果给出0个元素,那意味着不需要做任何事,如果给出1个元素，那显然,它是有序的，对吗？

哈佛公开课 - 计算机科学课程节选

And there is no work done on the surroundings because pressure is zero.

这里系统没有对环境做功,因为压强是零。

麻省理工公开课 - 热力学与动力学课程节选

If there's no work to be done, 0 the running time is gonna be zero.

如果并不需要做什么，那么其运行时间肯定为。

哈佛公开课 - 计算机科学课程节选