Question

USING PYTHON

1. Write a small program that asks for an integer number from the user and print all the prime numbers (2,3,5,7,etc) less than the input number.

2. How long it takes for your program to print the prime numbers less than 100. (Use magic functions)

Answer 1

1.

num=int(input('Enter the number upto which the print numbers will be printed: '))
for n in range(2,num+1):
    primeNumber = True
    for i in range(2,n):
        if (n%i==0):
            primeNumber = False
    if primeNumber:
       print(n)

Output:

numint (input ('Enter the number ets which the print numbers will be printed: )) for n in range (2 num+1) primeNumber True for i in range (2,n): primeNumber = False if primeNumber erint (n EvenOdd x inputs × D: python venv Scripts python.exe D:/python/inputs py Enter the number upto which the print numbers will be printed: 2 3 7 Process finished with exit code 0

2.

import time
start_time = time.time()

for n in range(2,101):
    primeNumber = True
    for i in range(2,n):
        if (n%i==0):
            primeNumber = False
    if primeNumber:
       print(n)

end_time=time.time()
print('The total time spend for printing 100 prime numbers is ')
print(end_time-start_time)

Output:

import time start time = time. time() for n in range (2 101) primeNumber True for i in range (2 n): if (0 primeNumber False if primeNumber: print (n) end time time.time () print ('The total time spend for printing 100 prime numbers is print (end_time-start_time)

2
3
5
7
11
13
17
19
23
29
31
37
41
43
47
53
59
61
67
71
73
79
83
89
97
The total time spend for printing 100 prime numbers is
0.0010023117065429688