10 recommended articles related to random number generation

1. Background introduction A while ago, the company's business had a need to generate red envelopes. There are two types of red envelopes: fixed red envelopes and random red envelopes. There is nothing much to say about fixed red envelopes. Random red envelopes require specifying a minimum value and a maximum value. There must be at least one The maximum value may not have a minimum value, but any red envelope cannot be less than the minimum value. I had never done this before and was a little confused, so I went to Baidu to do some research. I found that the red envelope algorithms I could find all had various bugs. They would either calculate negative values ​​or exceed the maximum value, so I decided to do it myself. One set comes out. 2. Basic ideas In terms of random number generation, I borrowed the idea of ​​​​this blogger@miserable uncle: Original text: For example, if you want to distribute 1 red envelope to N people, it is actually equivalent to getting N percentage data. The condition is The sum of these N percentages = 100/100. The average of these N percentages is 1/N. And these N percentage data conform to a normal distribution (most values ​​​​are relatively close to the mean). Interpretation: For example, if I have 1,000 yuan and send out 50 red envelopes, I will first randomly select 50 numbers, and then calculate the mean $avg of these 50 numbers. Using $avg/(1/N), I will get a base number $mixrand , and then use

1. php to generate random red envelope algorithm

##Introduction: 1. Background introduction A while ago, the company's business had a need to generate red envelopes, which are divided into fixed red envelopes and random red envelopes. There is nothing much to say about fixed red envelopes. Random red envelopes require specifying a minimum value and a maximum value, which must be at least A maximum value, there can be no minimum value, but any red envelope cannot be less than the minimum value. I had never done this before and was a little confused, so I went to Baidu to do some research. I found that the red envelope algorithms I could find all had various bugs. They would either calculate negative values ​​or exceed the maximum value, so I decided to do it myself. One set comes out. 2. Basic ideas In terms of random number generation, I learned from...

2. Detailed explanation of python's random module and weighted random algorithm and implementation method

Introduction: random is used to generate random numbers. We can use it to randomly generate numbers or select strings. •random.seed(x) changes the seed of the random number generator. Generally, there is no need to set the seed specifically, Python will automatically select the seed. •random.random() is used to generate a random floating point number n,0 <= n < 1•random.uniform(a,b) is used to generate a

3. Share some common auxiliary testing functions of WeChat mini programs: chance

## Introduction: What we are going to introduce is a WeChat applet auxiliary testing tool: Chance! Chance is a JavaScript random number generation tool. When we test some functions of the applet, we may need some random phone numbers, zip codes, names. Chance can generate random numbers, bytes, characters, namespaces, and addresses. , Dictionary Waiting, helps better automated testing. Chance is an open source software released under the MIT license that is friendly to both development and commercial use.

4.

Python module learning: random random number generation

##Introduction: The random module in Python is used to generate random numbers. The following introduces some of the most commonly used functions in the random module.

5.

Some ideas on generating random numbers with different probabilities

简介：题目:产生0-9中的随机数,要求0到9出现的概率依次递减,  一般思路,把10个0,9个1,8个2.....2个8,1个9放到数组中,然后随机生成数组下标,按下标取出数字.  二般思路:生成两个0-9的随机数,取小的那个,这个思路(手链魔咒提出)说实际的不知道是什么原理,但是实验证明,确实能达到效果.  验证方法:   程序代码  <?php  function fun(){       $n ...

6. 伪随机数 PHP随机数生成代码与使用实例分析

简介：伪随机数:伪随机数 PHP随机数生成代码与使用实例分析：我们还可以使用随机数设计任何我们想象的程序结构。 首先来认识一下PHP提供的随机数函数rand()。PHP的rand()函数将返回随机整数，具体使用方法如下 rand(min,max) 可选参数min和max可以使rand() 返回0到RAND_MAX之间的伪随机整数。例如，想要5到15（包括 5 和 15）之间的随机数，用 rand(5, 15)。 下面我来看一个具体的示例，我们做一个基本的函数

7. vb随机数 PHP n个不重复的随机数生成代码

简介：vb随机数:vb随机数 PHP n个不重复的随机数生成代码：复制代码 代码如下:

8. 简单挂2.5.5内测免费版 简单的php 验证图片生成函数

简介：简单挂2.5.5内测免费版:简单挂2.5.5内测免费版 简单的php 验证图片生成函数：复制代码 代码如下:

9. PHP n个不重复的随机数生成代码_PHP教程

简介：PHP n个不重复的随机数生成代码。复制代码 代码如下: ?php //range 是将1到100 列成一个数组 $numbers = range (1,100); //shuffle 将数组顺序随即打乱 shuffle ($numbers); //array_slice 取该数组

10. PHP随机数生成代码与使用实例分析_PHP教程

简介：PHP随机数生成代码与使用实例分析。我们还可以使用随机数设计任何我们想象的程序结构。 首先来认识一下PHP提供的随机数函数rand()。PHP的rand()函数将返回随机整数，具体使用

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