Back cover estimation

We often use the large O-kee to analyze the time complexity of an algorithm.

Let's look at a quantitative analysis method:

"Sansheng III" this number is relatively good memory, can be memorize down, convenient to do the back cover calculation when used. And you can see that the day in "Sansheng III" is equivalent to one second of the day.

The following is an example of a country with a population of 1 billion, demonstrating the immediacy of quantitative back-cover calculations:

As you can see, the hardware improvements will solve a problem that takes 30 years to solve, but the algorithm's improvement is more attractive, it shortens the time to less than one minute.

Back cover estimation