Here is the complete Python code to print prime numbers from 1 to n in Python. def is_prime(num): if num <= 1: return False for i in range(2, int(num**0.5) + 1): if num % i == 0: return False return True def print_primes(n): for num in range(2, n + 1): if is_...
# (Length calculation outside for loop) def test_02_v1(numbers): my_list_length = len(numbers) output_list = [] foriinrange(my_list_length): output_list.append(i * 2) returnoutput_list 通过将列表长度计算移出for循环,加速1.6倍,这...
This Blog provides a comprehensive guide to creating prime numbers, perfect numbers, and reverse numbers in Python. Learn More about Python Numbers!
import math def isPrime(num): for i in range(2,int(math.sqrt(num))): if(num%i==0): return False return True sum=0 n=int(input()) for i in range(2,n+1): if(isPrime(i)): sum+=i print(sum) 本文参与 腾讯云自媒体同步曝光计划,分享自作者个人站点/博客。 原始发表:2021/01/19 ,...
# Example of inefficient code # Loop that calls the is_prime function n times. def is_prime(n): if n <= 1: return False for i in range(2, int(n**0.5) + 1): if n % i == 0: return False return True def test_05_v0(n): # Baseline version (Inefficient way) # (calls th...
from math import sqrt num = int(input('请输入一个正整数: ')) end = int(sqrt(num)) is_prime = True for x in range(2, end + 1): if num % x == 0: is_prime = False break if is_prime and num != 1: print('%d是素数' % num) else: print('%d不是素数' % num) 2、练习...
deftest_02_v1(numbers): my_list_length=len(numbers) output_list=[] foriinrange(my_list_length): output_list.append(i*2) returnoutput_list 通过将列表长度计算移出for循环,加速1.6倍,这个方法可能很少有人知道吧。 # Summary Of Test Results ...
# Example of inefficient code# Loop that calls the is_prime function n times.defis_prime(n):ifn <=1:returnFalseforiinrange(2,int(n**0.5) +1):ifn % i ==0:returnFalsereturnTruedeftest_05_v0(n):# Baseline version (Inefficient way)# (calls the is_prime function n times)count =0...
4 changes: 3 additions & 1 deletion 4 Prime numbers in a given range Original file line numberDiff line numberDiff line change @@ -1,4 +1,6 @@ # #program that returns the count of prime numbers in the given range # for example input : n=6 # output=3 def count_prime(n): ...
# simple.for.pyfornumberinrange(5):print(number) 在Python 程序中,当涉及创建序列时,range函数被广泛使用:您可以通过传递一个值来调用它,该值充当stop(从0开始计数),或者您可以传递两个值(start和stop),甚至三个值(start、stop和step)。看看以下示例: ...