Why do good programmers have few bugs? because of them……

I now solemnly tell you: your algorithm is wrong and invalid! ! !

Why do I say that?

Did you encounter this situation when you were writing questions:

As soon as I got the title, I started to write code frantically, but after writing for a long time, I found that it became more and more messy, and I couldn't write any more in the end;
When I saw the title, it seemed familiar, but I couldn't start, and I was confused;
Always like to use violent solutions to solve, and programming skills have not improved;
I like to study difficult problems. I feel that the difficult problems can be easily solved with simple problems, but the difficult problems cannot be solved, which is very frustrating.

Because you made some mistakes! Learning algorithms is not enough, you need to have a scientific method.

Now, some well-known manufacturers like to examine algorithm ability, because they think that only by mastering algorithms and data structures can you have the abstract ability to deal with complex problems. This kind of thinking ability is the talent that big factories want to recruit, and people with this quality can also write better code.

The reason is that there are few code bugs written by excellent algorithm engineers.

Algorithms can be learned by everyone!

Some people will say, will the algorithm be difficult? Is it only the highly intelligent businessmen can learn, not so! Algorithm is a skill, an ability that can be trained in a scientific and rational way.

Algorithm learning should be done step by step

Algorithms are a systematic project and cannot be accomplished overnight. Those who come up with difficult problems will give up because of frustration. Even if the problem is solved, you may not know other problems, and the problems that Dachang inspected are not super difficult, they are all moderate difficulty.

Think about how to solve the problem

On the one hand, brushing the questions is to consolidate the programming skills you have learned, and on the other hand, it is also to increase your confidence in the interview. When you brush the questions, think about whether there is a better solution, so that you can run runtime beats 100% on each question during the interview. Make the interviewer look up to you.

So, how to brush the question? So, I have to say that there is an amazing website, LeetCode , which has a large number of algorithm questions. If you learn these questions, you will be able to interview big companies with ease.