# 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...
首先,判断n是否小于等于1,如果是则返回False,因为素数定义中要求大于1。 然后,使用for循环遍历2到n的平方根(使用int(n**0.5)取整加1)之间的所有数。 在循环中,判断n是否能被当前数整除,如果可以,则返回False,因为找到了一个能整除n的数,说明n不是素数。 如果没有找到能整除n的数,则返回True,表示n是素数。
ReadWrite a Program to Find a Perfect Number in Python Print the First 10 Prime Numbers in Python Using a While Loop Here, let me show you two methods to print the first 10 prime numbers using a while loop in Python. Method 1: Basic While Loop with Prime Check Function This method use...
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"...
logs.py - Search for all *.log files in a directory, zip them using the specified program, and date stamp them. move_files_over_x_days.py - Move all files over a specified age (in days) from the source directory to the destination directory. nslookup_check.py - Open the file server...
This function does a quicker # prime number check before calling rabinMiller(). if (num < 2): return False # 0, 1, and negative numbers are not prime. # See if any of the low prime numbers can divide num: for prime in LOW_PRIMES: if (num == prime): return True if (num % ...
Next Prime Number - Have the program find prime numbers until the user chooses to stop asking for the next one. Find Cost of Tile to Cover W x H Floor - Calculate the total cost of tile it would take to cover a floor plan of width and height, using a cost entered by the user. ...
上下文管理器对象存在以控制with语句,就像迭代器存在以控制for语句一样。 with语句旨在简化一些常见的try/finally用法,它保证在代码块结束后执行某些操作,即使代码块由return、异常或sys.exit()调用终止。finally子句中的代码通常释放关键资源或恢复一些临时更改的先前状态。
# 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): ...