题目说的不对，准确的说这个图叫概率密度分布。
输入一组数据，画出这组数据的概率密度函数曲线。
在图像处理中，可以用来表现像素的分布情况，与直方图功能类似。

The title is not quite right — to be precise, this plot is called a probability density distribution.
Given a set of data, plot the probability density function curve of the data.
In image processing, it can be used to show the distribution of pixels, similar in function to a histogram.

PSO 算法代码摘抄。

原文地址：精通 MATLAB 最优化计算 第 2 版 Page 270

A PSO algorithm code excerpt.

Original source: Mastering MATLAB Optimization Computing, 2nd Edition, Page 270

部署云端 VSCode，随时随地敲代码

Deploy a cloud VSCode and code anywhere, anytime

摸鱼时光发现了一篇折腾 VPS 的博客，上面写着用 nginx 反代 GitHub，可以用于 GitHub 的下载加速，并且说理论上可以做任何网站的镜像。于是我也简单操作了一下。

直接看他的吧

During my idle time I found a blog post about tinkering with VPS. It described using nginx to reverse-proxy GitHub to speed up downloads from GitHub, and claimed that in theory you could mirror any website. So I went ahead and gave it a simple try.

Go read his post directly

分享一个在公司看到的头文件。

Share a header file seen at the company.

面试官问程序崩溃了怎么调试？

我这里简单演示一下。

The interviewer asks: how do you debug a program crash?

Here I’ll give a quick demonstration.

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#include <iostream>
using namespace std;

class A{
public:
    virtual void print(){
        cout << "A" << endl;
    }
};

class B:public A{
public:
    void print(){
        cout << "B" << endl;
    }
};

int main(){
    A b = B();
    b.print(); // 这样可以吗？
	return 0;
}

面试官问我这样可以吗？

我犹豫了好久好久… 也不知道可以不可以。

面试官看我答不出来，然后问我知道静态绑定和动态绑定吗？（这是在提示我了）

可我还是不知道可以还是不可以。😥

The interviewer asked me: can this be done?

I hesitated for a long, long time… and still didn’t know whether it could or couldn’t.

Seeing that I couldn’t answer, the interviewer then asked whether I knew about static binding and dynamic binding. (That was a hint to me.)

But I still didn’t know whether it could or couldn’t. 😥