# (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...
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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_...
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...
# 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: ...
Check if each number is prime in the said list of numbers: False Flowchart: Sample Solution-2: Python Code: # Define a function named 'test' that takes two inputs: 'text' (a string) and 'n' (an integer).deftest(text,n):# Use a list comprehension to create a list 't' containing...
# To use, type this code: # import detectEnglish # detectEnglish.isEnglish(someString) # Returns True or False # (There must be a "dictionary.txt" file in this directory with all # English words in it, one word per line. You can download this from ...
# 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...
If a file with the outputFilename name already exists,# this program will overwrite that file:outputFilename = 'frankenstein.decrypted.txt'myKey = 10myMode = 'decrypt' # Set to 'encrypt' or 'decrypt'. 这一次当你运行程序时,一个名为Frankenstein.decrypted.txt的新文件会出现在文件夹中,该文件...
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): ...