So first of all, I've got to be careful about the end test. But the second thing is, OK, if it stops whenever this is less than two, am I convinced that this will always halt?
小心最后一次比较,其次,如果少于两个元素程序停止了,我们能确信这总是应该终止的么?,答案是肯定的,因为我在做什么?
OK.And if I substitute it again, This is going by a little fast.
如果继续下去就是,这有点儿快。
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