Chapter 135 I Have Learned Everything
Xu You thought to himself, Professor Peng, you still underestimate my speed.
While Peng Jun didn't change his mind, Xu You quickly picked out the books that Peng Jun had just mentioned from the bookshelf.
Seeing Xu You's excitement, Peng Jun couldn't help but think of the excitement of the aunties in the supermarket when they saw the discounted items.
"Teacher, it should be okay for me to borrow a few more books, right? I can return them before the New Year. Are you still in the lab during this time?"
Peng Junxin said, you have dragged the suitcase here, what else can I do.
"It's okay. As long as you can carry them, you can borrow as many books as you want. I may be leaving school in the next two days, so just return the books before school starts. There's no need to rush."
After getting Peng Jun's consent, Xu You could finally borrow books with peace of mind.
After picking dozens of books , Xu You finally felt that he had picked enough.
Xu You was not in a hurry to pack the books directly into the suitcase. Instead, he sorted the books out first and took a photo.
"Teacher, add me on WeChat and I'll send you this photo. When you return the books, compare them again to make sure you don't miss a book."
"Forget it, don't bother. I believe you."
But under Xu You's repeated insistence, Peng Jun had no choice but to add Xu You's WeChat and received the photos sent by Xu You.
"Teacher, thank you very much for your teaching today! I will definitely remember this kindness!"
Peng Jun smiled helplessly and said, "Why are you being so polite? I just and recommended some courses and teaching materials. It's my honor to have the opportunity to communicate with such an outstanding student like you."
After seeing Xu You off, Peng Jun felt mixed emotions.
Peng Jun really didn't expect that Xu You would be able to borrow dozens of books from him the first time he met him.
But undoubtedly, Peng Jun’s biggest feeling about Xu You is that this kid really loves learning.
Although Peng Jun didn't know Xu You very well, he knew that Xu You must be a child with extremely high academic talent.
But compared to Xu You's talent, Xu You's love of learning may be more important.
Peng Jun admires and likes Xu You from the bottom of his heart.
"It would be a great blessing to have a student like Xu You in the laboratory," Peng Jun sighed.
Dragging a box of books back to the dormitory, Xu You turned on the computer without taking a rest.
Opening the bar, Xu You searched for the corresponding online course teaching video.
"The fastest playback speed is only 2x, which is still too slow."
Under the current deep learning state, Xu You’s maximum learning efficiency can reach four times the normal level.
In this way, the 2x speed in the player is only equivalent to 0.5x speed in Xu You's eyes.
Xu You searched for some methods on the Internet and finally succeeded in adjusting the speed of the video to 4 times.
In this case, in the deep learning state, it is just the normal speed.
But this alone is not enough.
While listening to the lectures, Xu You also has to look at the textbooks and think and analyze at the same time.
This is also the way of learning that Xu You is accustomed to in class.
This three-dimensional learning method can maximize Xu You's learning efficiency.
After completing all the preparations, Xu You began his formal studies.
Sure enough, this way of learning is indeed very efficient.
You can master the knowledge to a very solid level during the first study.
It's at a terrifying 4x speed, so fast that outsiders can't tell what's being said.
For Xu You, it was just a normal speaking speed.
In just one night, Xu You felt that his computer basics had improved a lot.
After taking a look at the system interface, I found that my subject level had improved by 6 points at once.
Remembering Peng Jun's instructions, Xu You picked out a new laptop overnight.
Xu You didn't buy anything too expensive. The configuration of more than 10,000 yuan is more than enough for future programming and modeling.
In this way, Xu You maintained at least ten hours of study every day.
With the help of deep learning, Xu You can complete the entire course of a subject in less than a day and reach the level where he can program and apply it himself.
In just ten days, Xu You had completed all the courses recommended by Peng Jun, as well as all the borrowed books.
After looking at the score of the system interface, the subject level of informatics has reached 182 points.
"It has actually risen by as much as 100 points. It seems that the effect is very obvious."
At this time, Xu You also wanted to verify what his current level was.
Thinking of this, Xu You sent a message to Peng Jun.
"Teacher, are there any related questions? I want to practice and see how well I have mastered them."
After seeing this, Peng Jun immediately replied to Xu You.
"Okay, now what lesson have you learned?"
"Teacher, I have learned everything you told me."
Seeing Xu You 's words, Peng Jun couldn't help but frowned tightly.
Are you kidding?
The courses that Peng Jun told Xu You about were all the core courses in the computer major.
If you can really learn all of these, it would be equivalent to the level of an undergraduate graduate in computer science.
No matter how good Xu You is, Peng Jun would never believe that Xu You's learning ability could be so exaggerated.
"Have you really finished learning? Then I'll send you a question first."
Peng Jun naturally didn't believe that Xu You had really taught all these courses by himself.
But Peng Jun didn't want to make it difficult for Xu You, so he just picked a question that was not too difficult and sent it to Xu You.
After receiving the question, Xu You read it carefully.
"Given an integer n, return n! the number of zeros in the result's mantissa."
The content of the question was very short, but Xu You knew that a short question did not necessarily mean that it would be easy.
Sometimes, it's even the exact opposite.
Xu You first translated the question stem into a more understandable form of expression.
The so-called "n!", that is, the factorial of n, starts from 1, multiplied by 2, multiplied by 3, and so on to n.
The final calculation result is the number of zeros at the end of the number, which is the final answer.
If we use pure algorithmic thinking, a relatively simple and crude method is to just multiply it directly and then count how many zeros there are at the end.
But this method is undoubtedly not a good method.
Xu You knew that Peng Jun definitely didn't want him to solve the problem in this way.
Soon, Xu You found a new solution to the problem through mathematical thinking.
"If we ignore 0, then among the 9 numbers 1 to 9, 0 only appears when you multiply 2 and its multiples, and 5 and its multiples."
In this case, the problem becomes how many pairs of 2 and 5 can be matched in this factorial number.
