"This is the Fibonacci sequence..."

Before Xiao Jialin could not wait in front of him, he was obviously not a computer student, or even a college student, and then picked up a small paper bag with the logo of the Thinker Cultural Supplies Company from the workbench and said, "Congratulations, you answered correctly."

The girl, who looked only sixteen or seventeen years old, took the paper bag, opened it and looked at it, and saw three postcards containing ink paintings and ancient poems printed with exquisite and elegant poems. She liked it very much, but was not satisfied. She pointed to a row of notepads piled on the left side of the workbench and asked, "Why give me notepads, but only postcards?"

Starting from 8 a.m. on April 30, Xiao Jialin sat in the corridor on the first floor of the multi-functional lecture hall of Sanjiang University to distribute gifts. In two days, this kind of question has been asked hundreds of times. He felt bored and helpless. He lifted his pencil weakly, clicked on the poster in front of him, and said, "If you can optimize this code, you can get the notepad."

The girl really didn't understand and asked with her eyes blinking, "How to optimize?"

Xiao Jialin shrugged his shoulders and spread his hands, and put on an unhelpful position.

The girl felt despised and grimaced at him very unhappy, then left with a small paper bag. At this time, Zhang Dongliang, who was in the same dormitory, walked in from outside the lecture hall and asked, "Xiao Jialin, how many notepads have you sent out these days?"

"It's about 130 books."

Zhang Dongliang supported the workbench with his hands and sighed with a sound: "Now our school is going to lose all its face. I heard that almost 200 books were sent out from Yunda University, and the University of Science and Technology is even more amazing. It has sent out four or five hundred books."

"Of course we can't compete with the University of Science and Technology, but there are so many people in Yundaeng who know how to program?" Xiao Jialin said a little disbelief and said, "Even if they are stronger than us, they are limited in strength. They can't just cheat by memorizing the answer, right?"

"Didn't Secretary Jiang say that it's not enough to just write the code, and I have to explain why I did this. Besides, Xiaoma and the others would not be able to let people from Yunda." Zhang Dongliang gently patted the poster on the workbench with his palm and said, "If you hadn't discovered the time complexity problem in this code that day, Xiaoma and I would have been ugly. In the C language exam, this was the standard answer, and I didn't think about it much."

"It's just that I'm lucky. I changed my graduation design a few days ago and happened to use recursion, so I thought about it more."

After a few words of modesty, Xiao Jialin leaned over and picked up a notepad. The cover of the notepad had a black bicycle wheel printed on it. The wheels were written in white fonts: Life is like riding. If you want to maintain balance, you have to keep moving forward. In the lower right corner of the cover, there is a square with white characters on red, marked with the name of Albert Einstein.

The pattern is simple, the font is concise, the style is rigorous and cold, completely different from the Thinker’Notebook, which was full of literary atmosphere, and is very consistent with the aesthetics of science and engineering students. After Xiao Jialin admired it for a few seconds, he opened the cover and saw a bookmark on the title page, which read a title:

Instead of using other library functions, write a function in C language to realize the function of converting strings into integers.

This question looks very simple at first glance. You can convert strings such as "123" into integer 123 output, and you can do it with a few lines of code. Many beginners who are new to programming can also write it out.

However, after repeated thinking, Xiao Jialin felt that this question was not simple, because in addition to normal strings, there are empty strings such as "". If the empty string is set to output an integer 0, it will conflict with normal strings such as "0". It needs to be distinguished. If you think about it further, there will be a series of problems such as empty pointers, illegal strings, and special strings. It is very troublesome and it is definitely not possible to solve it in just a few lines of code.

There is also a line of eye-catching text under the bookmark: If you have completed this question, please go to the first floor of the Sanjiang University multi-functional lecture hall before 2 pm on May 2 to receive a more exquisite gift.

"Xiao Jialin, I heard that when you went to the Institute of Quantum Physics yesterday afternoon, you met Du Qiu himself. What kind of person is he like?"

"I only met for more than ten minutes, but I didn't know what kind of person he was." Xiao Jialin put the notepad back in the distance and said, "But I feel that he is as charming as a movie star."

"Damn! You are not a freshman girl, so why are you crazy?"

"I'm not talking about his appearance, I'm talking about his ability to do things and program." Xiao Jialin didn't have much language talent, and he didn't know how to describe it after thinking for a long time. He had to find an inappropriate analogy and said, "Just like the Mercury Man in Terminator 2, it's cool and powerful."

"The Mercury Man is the villain."

"Of course I know it's a villain, but you can't deny that he is very charming, right?" Xiao Jialin saw Zhang Dongliang nodding, and then further explained: "The Mercury Man can freely switch bodies, Mr. Du can freely switch ideas, and deal with several completely different types of things at the same time. It's very efficient and amazing."

"How do you know?"

"Their company works in a warehouse of the Institute of Quantum Physics. That warehouse is very large and divided into four areas." Xiao Jialin drew a simple picture in a field shape on the poster with a pencil, pointing to different areas and introduced: "This is the office software R&D area, this is the operating system R&D area, this is the database system R&D area, this is the office area of ​​Mr. Du."

"Damn! They even do the operating system? Isn't it a bluff, right?"

"Probably not. When I went there yesterday afternoon, a great man who had already returned from the United States was already working in the operating system area. He often asked Mr. Du questions." Xiao Jialin said this, unconsciously showed an admiration and said, "Mr. Du is writing a website software, which has nothing to do with the operating system, but he can always solve the problem of that great man quickly. Sometimes he even even wrote his own program while answering it, and it was done in a few words. Do you think it is amazing?"

"What are the problems?"

"I listened to it for a long time, but I didn't understand a word." Xiao Jialin smiled self-deprecatingly and said, "We don't even know what the Internet looks like. They have developed the world's top browser, and the gap is too big."

"As you say that, Du Qiu is really good enough, and he is self-taught."

"yes."

The two were chatting, and three students came over from outside the lecture hall, and said loudly: "Brother, we have already made the title on the bookmark, so take out the exquisite gifts."

"Take me the answer."

The student in charge took out a piece of paper and handed it to Xiao Jialin. Xiao Jialin only took a look and returned it to him, asking, "How to deal with empty strings?"

The student was stunned for a moment, then suddenly realized, took out a ballpoint pen from his pocket and said, "I'll change it."

"How to deal with illegal strings?"

"I'll change it."

"Where is the special string?"

Three students came with excitement and left in disappointment. After they left, Xiao Jialin said to Zhang Dongliang with some fear: "Fortunately, after getting the question the day before yesterday, we studied it carefully for a night, otherwise when I went to see Mr. Du yesterday afternoon, I was even more embarrassed than them."

Zhang Dongliang nodded in agreement and asked, "Why did Mr. Du say about you?"

"He said I could barely be considered a qualified coder." Xiao Jialin showed a self-deprecating expression and said, "The coder is a noun created by Mr. Du, which means that a farmer who writes code can only do some basic programming work. Haha, we have been in college for four years and think it's amazing, but in the eyes of others, they are just a farmer, and they are just barely qualified."

"Tsk! He is the oldest person..."

It was almost 9 o'clock at this time, less than 5 hours before the 2 pm speech. More and more students came to submit answers to the questions on the bookmarks, but they were sent away by Xiao Jialin's replies. It was not until around 10 o'clock that several junior students in the calculation department received gifts. The gifts were also notepads, but they were replaced with genuine leather travel notepads that were no longer available to the public. In addition, they were equipped with a special kraft paper envelope.

In the middle of the envelope, a famous saying in "The Analects of Confucius" was written in regular script: If there are three people walking together, there must be my teacher. The handwriting is dignified and beautiful, and the spirit is smooth. Below, three rows of words are printed in small lead type. The first row is Du Qiu's name, the second row is the logo and name of Snapdragon Software Company, and the third row is the time and place of the speech.

"This envelope is an entrance ticket for the speech. Welcome to support it at 2 pm."

"Wow! This Snapdragon Software Company is so awesome, even the tickets for speeches are so particular."

"This question is quite difficult. I think few people can get tickets. If it is empty at that time, wouldn't it be a shame?"

"It is said that in addition to our school students, students from Yunda University and Polytechnic University will also come, and it is definitely impossible to be empty."

At 12 noon on May 2, Chen Zhiyang entertained Du Qiu in the small canteen dedicated to faculty and staff at Sanjiang University. Before the banquet started, he asked Secretary Gao to invite Cai Xinghuo over and asked: "Teacher Cai, how many students have obtained tickets now?"

"As of 11:45, a total of 196 students received tickets, including the largest number of students from the University of Science and Technology, with 107 people, and there are more than 40 people from Yunda University and our Sanjiang University." Cai Xinghuo reported the numbers and suggested: "President, there are only 208 seats in the multi-functional lecture hall. Do you think you should arrange some temporary seats? I guess when President Du starts his speech at 2 o'clock, there will probably be more than 300 people."

"You can arrange some temporary seats. If you really can't sit down, just stand in the back row." Seeing that the speech was so popular, Chen Zhiyang was in a good mood. He wiped his hands with a warm towel and said, "The Yunda Computer Department is much more than our students, and only more than 40 people have answered the questions correctly. It seems that his teaching skills are not as good as us. Du Qiu, how many students are you going to recruit in our school?"

"It depends on the situation. If there is a suitable one, please ask a few more."

Chen Zhiyang didn't care about the employment issues of students. He put down the towel and said, "I didn't expect you to be a master of calligraphy. The words on the ticket are both spiritual and shaped, beautiful and generous. Did you really write them by yourself?"

Jiang Danfeng took over this boring topic very consciously and said with a clever smile: "Principal Chen, I can guarantee this, it was indeed written by President Du, because I have to polish ink for him every night these two days. Look, my nails are black."

"Okay, okay, in ancient times, there were red sleeves and fragrant reading at night, and now there were red faces and beautiful writing at night." Chen Zhiyang smiled and praised: "Du Qiu, you wrote the ticket to your own speech, humble and sincere. If this matter is spread, it will become a beautiful talk."

"Uncle Chen has been awarded."

Chen Zhiyang laughed again, laughing happily. He was eager to use Du Qiu's knife to open the deadlock and push the career to a step further. Today's speech was a very important step. He was worried that Du Qiu would not be able to withstand the pressure and mess it up, but he did not expect that he was not afraid of stage, but instead used his tricks and played a wonderful marketing show. Even if the speech itself was not good, it would be enough to become a good story in the academic world. This story would become a medal in his resume and a booster for his success.

…………

Note 1: The notebook cover design is based on the design-Different series of works by Canadian graphic design master Ryan-McArthur.

Note 2: The programming questions in the book are based on "Sword-pointing offer: Exquisite typical programming questions for interviewers of famous companies".
Chapter completed!