# 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...
In this example, we initialize a list of boolean values representing the primality of each number. We then mark the multiples of each prime number asFalse. Finally, we print the numbers that remainTrue. Here is the exact output in the screenshot below: Check outWrite a Program to Check Wh...
Python simpy.primerange()方法 在simpy模块中,我们可以用sympy.primerange()函数得到范围[a, b]中所有质数的列表。 语法:sympy.primerange() 参数:range a 和 b 返回:一个在给定范围内的所有素数的列表 代码#1: # Python program to get prime number range# using sympy.primerange() method# importing sym...
质数(Prime number),又称素数,指在大于1的自然数中,除了1和该数本身外,无法被其他自然数整除(也可定义为只有1与该数本身两个因数)。举个例子,比如说数字7,从2开始一直到6,都不能被它整除,只有1和它本身7才能被7整除,所以7就是一个质数。 下面来看看python的代码实现 import math import time def is_pri...
is_prime(i) if __name__ == '__main__': N = 10000000 start = time.time() run_program(N) end = time.time() print(end - start) 执行上述代码,可以看到,速度提升了4倍左右,不到1秒,效果还是非常明显 最后,作为横向比较,我们使用c++语言,也写一个类似的程序 ...
1)将数字相乘两次:(数字*数字) (1) By multiplying numbers two times: (number*number)) To find the square of a number - simple multiple the number two times. 要查找数字的平方-将数字简单乘以两次。 Program: 程序: # Python program to calculate square of a number ...
程序源代码： Question: Determine how many prime numbers are between 101-200 and output all prime numbers. Program analysis: the method to determine prime number: use a number to divide 2 to sqrt (this number). If it can be divided by an integer, it indicates that this number is...
exit() # When Ctrl-C is pressed, end the program. 探索程序 试着找出下列问题的答案。尝试对代码进行一些修改,然后重新运行程序,看看这些修改有什么影响。 如果将第 22 行的response.isdecimal()改为response,并输入一个非数字作为开始搜索质数的数字,会出现什么错误? 如果把第 38 行的number < 2改成...
Python test_prime_v1.py import unittest from prime_v1 import is_prime class TestIsPrime(unittest.TestCase): def test_prime_number(self): self.assertTrue(is_prime(17)) def test_non_prime_number(self): self.assertFalse(is_prime(10)) if __name__ == "__main__": unittest.main(verbo...
Prime Factorization - Have the user enter a number and find all Prime Factors (if there are any) and display them. 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...