Share an example of how Python random generates N random numbers that do not repeat within a certain interval.

In a recent experiment, the data needed to be randomly split into two parts according to a certain proportion. The core of this problem is actually the problem of generating non-repeating random numbers. The first thing I thought of was the recursive method, and then I discovered that Python actually already provides a function for this method, which can be used directly. The specific code is as follows:

#生成某区间内不重复的N个随机数的方法
import random;

#1、利用递归生成
resultList=[];#用于存放结果的List
A=1; #最小随机数
B=10 #最大随机数
COUNT=10

#生成随机数的递归数学，参数counter表示当前准备要生成的第几个有效随机数
def generateRand(counter): 
    tempInt=random.randint(A,B); # 生成一个范围内的临时随机数，
    if(counter<=COUNT): # 先看随机数的总个数是不是够了，如果不够
        if(tempInt not in resultList): # 再检查当前已经生成的临时随机数是不是已经存在，如果不存在
            resultList.append(tempInt); #则将其追加到结果List中
            counter+=1;# 然后将表示有效结果的个数加1. 请注意这里，如果临时随机数已经存在，则此if不成立，那么将直接执行16行，counter不用再加1
        generateRand(counter); # 不管上面的if是否成立，都要递归。如果上面的临时随机数有效，则这里的conter会加1，如果上面的临时随机数已经存在了，则需要重新再生成一次随机数,counter不能变化
generateRand(1);#调用递归函数，并给当前要生成的有效随机数的个序号置为1，因为要从第一个开始嘛
print(resultList)# 打印结果

#2、利用Python中的randomw.sample()函数实现
resultList=random.sample(range(A,B+1),COUNT); # sample(x,y)函数的作用是从序列x中，随机选择y个不重复的元素。上面的方法写了那么多，其实Python一句话就完成了。
print(resultList)# 打印结果

Result:

[Related recommendations]

1. Detailed explanation of mathematics and random numbers in the Python standard library (math package, random package)

2. Example tutorial of Python random() function

3. Share an example tutorial of random (randomly generated number) in Python

4. Share an example tutorial on how to generate random numbers using the random module in Python

5. Common methods and usage examples of the Python random module (obtaining random numbers)

6. Python random module common methods

7. Python module learning: random random number generation

The above is the detailed content of Share an example of how Python random generates N random numbers that do not repeat within a certain interval.. For more information, please follow other related articles on the PHP Chinese website!