All the energies are negative because it is a bound system. I start up here with n equals one.
所有能量级都是负数,因为它是一个束缚系统,在这里我从n等于1讲起。
If I'm running at nanosecond speed, 1000 n, the size of the problem, whatever it is, is 1000, and I've got a log algorithm, it takes 10 nanoseconds to complete.
如果这个问题的规模,也就是n,是,如果这个问题是对数级的,这将会占据10纳秒的时间,你一眨眼的时间。
Now, it's also the case that this is fundamentally what class this algorithm falls into, it is going to take exponential amount of time.
哪个种类的一个实例,这个问题的时间复杂度是指数级的,也就是当n上升的时候。
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