# Python program to check prime number# Function to check prime numberdefisPrime(n):returnall([(n%j)forjinrange(2,int(n/2)+1)])andn>1# Main codenum=59ifisPrime(num):print(num,"is a prime number")else:print(num,"is not a prime number")num=7ifisPrime(num):print(num,"is a ...
Python program to check prime number using object oriented approach# Define a class for Checking prime number class Check : # Constructor def __init__(self,number) : self.num = number # define a method for checking number is prime or not def isPrime(self) : for i in range(2, int(...
# Program to check if a number is prime or not num = 29 # To take input from the user #num = int(input("Enter a number: ")) # define a flag variable flag = False if num == 0 or num == 1: print(num, "is not a prime number") elif num > 1: # check for factors for...
prime number python代码 primes在python 1.题目 2.代码 import os import sys # 请在此输入您的代码 def countPrimes(n): primes=[1]*n count=0 li=[] for i in range(2,n): if primes[i]: count+=1 li.append(i) for j in range(i*i,n,i): primes[j]=0 return count,li n=int(input...
result=is_prime(17)print(result)# 输出True 1. 2. 运行上述代码,可以得到输出结果为True,说明17是一个素数。 性能优化 虽然上述代码能够正确判断一个数是否为素数,但在实际使用中,可以对其进行性能优化。由于素数只能被1和本身整除,因此在试除法中,只需要判断2到n的平方根范围内的数即可。
一个大于1的自然数,除了1和它本身外,不能被其他自然数(质数)整除(2, 3, 5, 7等),换句话说就是该数除了1和它本身以外不再有其他的因数。 test.py 文件: # -*- coding: UTF-8 -*-# Filename : test.py# author by : www.runoob.com# Python 程序用于检测用户输入的数字是否为质数# 用户输入数字...
# this program will overwrite that file: outputFilename = 'frankenstein.encrypted.txt' myKey = 10 myMode = 'encrypt' # Set to 'encrypt' or 'decrypt'. # If the input file does not exist, the program terminates early: if not os.path.exists(inputFilename): ...
Check outWrite a Program to Check Whether a Number is Prime or not in Python Method 3: Using Python’s Built-in Libraries Python’ssympylibrary includes a function to generate prime numbers. This method is straightforward and leverages the power of existing libraries. ...
sys.stdout.write=self.original_write # ⑦ifexc_type is ZeroDivisionError:# ⑧print('Please DO NOT divide by zero!')returnTrue # ⑨ #⑩ ① Python 会以除self之外没有其他参数调用__enter__。 ② 保留原始的sys.stdout.write方法,以便稍后恢复。
using System;publicclassHappyProgram{publicstaticvoidMain(){ Console.WriteLine("Enter a number: ");intYourNumber=Convert.ToInt16(Console.ReadLine());if(YourNumber >10) Console.WriteLine("Your number is greater than ten");if(YourNumber <=10) Console.WriteLine("Your number is ten or smaller"...