# 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...
import math import time def is_prime(num): if num == 2: return True if num <= 1 or not num % 2: return False for div in range(3, int(math.sqrt(num) + 1), 2): if not num % div: return False return True def run_program(N): total = 0 for i in range(N): if is_pr...
import mathimport timedefis_prime(num):if num == 2: returnTrueif num <= 1ornot num % 2: returnFalsefor div in range(3, int(math.sqrt(num) + 1), 2): ifnot num % div: returnFalsereturnTruedefrun_program(N): total = 0for i in range(N): if is_prime(i)...
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")...
a prime example of a major package where porting to 3.x is far from trivial 三、Hello World程序 在linux 下创建一个文件叫hello.py,并输入 1 print("Hello World!") 然后执行命令:python hello.py ,输出 1 2 3 localhost:~ jieli$ vim hello.py ...
This Blog provides a comprehensive guide to creating prime numbers, perfect numbers, and reverse numbers in Python. Learn More about Python Numbers!
4、if done is not None 比语句 if done != None 更快,读者可以自行验证; 5、在耗时较多的循环中,可以把函数的调用改为内联的方式; 6、使用级联比较 “x < y < z” 而不是 “x < y and y < z”; 7、while 1 要比 while True 更快(当然后者的可读性更好); 8、build in 函数通常较快,add...
print(n,'is a prime number') >>> 2 is a prime number 3 is a prime number 4 equal 2 * 2 5 is a prime number 6 equal 2 * 3 7 is a prime number 8 equal 2 * 4 9 equal 3 * 3 1. 2. 3. 4. 5. 6. 7. 8.
Enter D for done, or just press Enter to continue breaking: > d Copying hacked message to clipboard: The real secrets are not the ones I tell. 程序建议的第一个关键字(ASTROLOGY)不起作用,所以用户按Enter让破解程序继续,直到找到正确的解密密钥(ASTRONOMY)。 关于维吉尼亚字典破解程序 因为vigenere...
flag1=prime(k)#调用prime函数ifflag1:#如果k为素数 flag2=prime(j)#调用prime函数ifflag2:#如果k和j都是素数print(i,'=',k,'+',j)#输出结果 n+=k=k+ 结果如下。 在这里插入图片描述 三、参考 1、廖雪峰的官网 2、python官网 ...