Reborn Ace Hack

(New book issue, please give me flowers and collect it!) "Why are you going in such a hurry if you don't want to invigilate the exam?" Xiao Yuan asked in confusion as he followed Xu Xiaoyang toward the office building.

"Isn't it because of you?" Xu Xiaoyang said.

"Because of me?" Xiao Yuan was even more puzzled.

"We couldn't understand what happened to the last program you wrote. To be cautious, we decided to find a computer to compile and run it," Xu Xiaoyang explained.

"Oh." Xiao Yuan suddenly realized, and then said with an embarrassed smile, "I'm really sorry. When I wrote that program, I only thought about how to write it concisely. I didn't think about anything else. But I caused you trouble. I want to

Knowing this, I should have written another one at that time."

"Do you have any other methods?" Xu Xiaoyang turned around and asked in surprise.

"I can still do it, but it's much more verbose and less efficient than the method I wrote. How about I rewrite it so I don't have to go through the trouble of verifying it." Xiao Yuan said. He now regrets writing the previous program.

Well, the reason why he chose that method at that time was completely a subconscious habitual behavior, but he didn't expect that there would be such trouble.

"Forget it, if your program can be compiled and run correctly, you will definitely get extra points." Xu Xiaoyang waved his hand and said, while they were talking, they came to the office building, climbed the stairs to the fifth floor, and came to the School of Computer Science

The first computer room. The door of the computer room was open, so I pushed the door and walked in.

The computer room of the School of Computer Science at Jiangzhou University is much larger than that of Nanzhou No.1 University. However, because the computer room was built earlier, the computers in it are much older than those of Nanzhou No.1 University. A lot of them are still 486 and Pentium generation 1.

Level, there are only computer room administrators, Duan Yanyue and Liu Dong inside.

Duan Yanyue saw Xu Xiaoyang walking in with Xiao Yuan, stood up from the computer, and asked: "Xu Xiaoyang, what's the matter?"

"That's what happened. Xiao Yuan has finished the programming questions for the second round of selection. Let me verify a program he wrote." Xu Xiaoyang explained.

"Didn't you say that as long as there is no problem with the program flow, you don't need to pay too much attention to the grammatical details? Why do you still need to verify it?" Liu Dong raised his head and frowned and asked.

"It's been less than an hour, and Xiao Yuan has finished the test paper?" Duan Yanyue was obviously concerned about another question. At the same time, a pair of slightly narrow red phoenix eyes kept looking at Xiao Yuan who was following Xu Xiaoyang.

"It took Xiao Yuan half an hour to finish all the questions. There were no problems with the previous questions. It was just the last additional question. He wrote a program that none of us could understand. We couldn't tell whether it was right or wrong. To be cautious,

, just come over and compile and run it on the computer." Xu Xiaoyang answered all the questions of Duan Yanyue and Liu Dong at once.

"What program? Let me take a look first." Duan Yanyue's eyes lit up and he said with interest.

Xu Xiaoyang handed the test paper to Duan Yanyue. She looked through the questions Xiao Yuan had answered before and praised: "It's really good that I can complete all these questions in half an hour."

Xiao Yuan smiled indifferently and said nothing. To him, this kind of praise was like praising a high school student for doing a set of elementary school test questions correctly. There was nothing worthy of his happiness at all. But what he didn't expect was that this kind of

The indifference made Duan Yanyue rate him even higher.

Duan Yanyue finally focused on the logical judgment program written by Xiao Yuan. After looking at it for a few minutes, his brows furrowed slightly. After a while, he raised his head and asked: "Xiao Yuan, tell me

What are your specific ideas for this algorithm?”

"Does this count as passing the second round and entering the third round of interviews?" Xiao Yuan asked with a slight frown. Although he was very interested in this girl, her condescending questions made him feel a little uncomfortable.

"Haha, that's right." Duan Yanyue looked slightly stunned, then said with a smile.

"The second additional question is a logic question. My basic idea in writing this program is that no matter how complex the logical operation is, it can be converted into the AND or NOT representation of binary 0 and 1, and the result can be obtained through the operation of binary digits...

"

Xiao Yuan talked about his main idea of ​​​​writing this program. In short, it is to convert complex logical operations into direct binary calculations. The program he wrote on the test paper is like this, fully utilizing the C language to understand the underlying binary system.

The ability to operate on digital bits converts the logical conditions in the question into binary bit string representations. Through operations on these binary bit strings, the final result is obtained. This kind of algorithm should actually be taught in college C language programming. Xiao

Even further, some one's complement operations of binary digits were used. While improving the efficiency of the algorithm, the readability of the program was somewhat poorer. Moreover, the comments he wrote on the test paper were also very concise. This should be attributed to Xu Xiaoyang and others.

I don’t understand the reason.

In just a dozen lines of program, under Duan Yanyue's constant questioning, Xiao Yuan had to go to the podium in front of the computer room and pick up chalk to write and explain in order to explain it thoroughly. When he finished speaking, the blackboard

It is already filled with dense handwriting.

Xu Xiaoyang was sweating profusely as he listened. He could not have imagined that the program with only a dozen lines contained so much computer theory, some of which were beyond the scope of what he, a sophomore undergraduate, could learn.

Later, he had the illusion that the person standing on the podium giving an explanation was not a student, but a knowledgeable computer professor.

"President Duan, I wonder if I have passed the test?" Xiao Yuan patted the chalk dust on his body, threw the remaining chalk heads into the chalk box on the desk in front of him, and returned to Xu Xiaoyang's side, indifferently

Yixiao asked.

"Your theoretical knowledge is definitely enough, but you still have to answer a few questions from me." Duan Yanyue looked at the childish-looking boy in front of him with interest, and was definitely no older than twenty years old.

asked with a smile.

"What's the problem?" Xiao Yuan asked.

"Do you know what kind of organization the Computer Society is?" Duan Yanyue asked.

"The Computer Society is an unofficial organization formed voluntarily by computer enthusiasts. Its purpose is to promote computer technology in schools, stimulate students' interest in computers, and cultivate students' basic computer skills..." Xiao Yuan said, this set of rhetoric is completely

It is the official term used in the Computing Machinery Association's promotional materials and is very standard.

"It seems that you understand it quite clearly. Then you should also know that with your current technical level, you can't actually learn any more useful knowledge from coming to the Computer Society. I want to ask you, why do you still want to join?

How about signing up to join this organization?" Duan Yanyue asked again.

"Haha, actually the reason why I came to sign up is because I have some connections with the Association for Computing Machinery, and I have admired President Duan's reputation for a long time. I thought it was a rare opportunity to have dinner with you, so I signed up.

." Xiao Yuan replied that this reason is half true and half false. It is remarkable and there should be no loopholes.

"So that's it. Well, your answer has passed." Duan Yanyue said with a slight smile.

"So I passed the interview?" Xiao Yuan asked.

"Yes, you passed, congratulations." Duan Yanyue said.

"Thank you." Xiao Yuan said with a calm smile.

Xu Xiaoyang was very happy when he heard Duan Yanyue's confirmation. At the same time, he did not mention the program verification, because with Xiao Yuan's explanation just now, the correctness of this program has been deduced by Xiao Yuan during the explanation process.

Once you have done it, it will be superfluous to verify it again.

Seeing that nothing happened, Xiao Yuan was about to leave, but was stopped by Liu Dong.

"Xiao Yuan, you are the first opponent worthy of my attention."

"Thank you, but if you want to attract my attention, you still need to show your true skills." Xiao Yuan said with a calm smile.

"It will be soon." Liu Dong replied.

"I'm looking forward to it." Xiao Yuan said again. After saying this, which only the two of them could understand, under Duan Yanyue's puzzled eyes, Xu Xiaoyang left the computer room with a confused Xu Xiaoyang.

ps: There are two updates today, the first one is delivered.