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Name: Diksha Upadhyay Class: Xii Section: E Roll Number: 13 Subject: Computer Science Subject Code: 083

The document contains Python programming exercises for a computer science class, including functions to check for twin primes, palindromes, Armstrong numbers, and the frequency of vowels in a string. Each exercise includes a problem statement, a sample input/output, and the corresponding Python code solution. The solutions demonstrate the use of functions and basic control structures in Python.

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3 views9 pages

Name: Diksha Upadhyay Class: Xii Section: E Roll Number: 13 Subject: Computer Science Subject Code: 083

The document contains Python programming exercises for a computer science class, including functions to check for twin primes, palindromes, Armstrong numbers, and the frequency of vowels in a string. Each exercise includes a problem statement, a sample input/output, and the corresponding Python code solution. The solutions demonstrate the use of functions and basic control structures in Python.

Uploaded by

ragemanop
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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NAME : DIKSHA UPADHYAY

CLASS : XII
SECTION :E
ROLL NUMBER : 13
SUBJECT : COMPUTER SCIENCE
SUBJECT CODE : 083
Q1) Solve using Python code to accept two numbers. Check and
display whether they are twin prime or not by using function. The
function returns 1 if a number is prime, otherwise returns 0. Twin
prime numbers are a pair of prime numbers whose difference is 2.
[Hint: (5,7),(11,13),(17,19) are twin primes.]

Solution :
def prime(n):
f=1
if n<=1:
return 0
for i in range(2,n//2 + 1):
if n%i==0:
f=0
return f
return f
def check_twin_prime(a, b):
if prime(a) and prime(b) and abs(a - b) == 2:
print(f"({a}, {b}) are twin primes.")
else:
print(f"({a}, {b}) are not twin primes.")

num1 = int(input("Enter first number: "))


num2 = int(input("Enter second number: "))

check_twin_prime(num1, num2)
OUTPUT:
Q2) Write a Python code to accept a number and check whether
the number is a palindrome or not. Use a function def Palin(n)
which returns a number after reversing its digits.
Sample Input: 343
Sample Output: It is a Palindrome Number

Solution :
def Palin(n):
a=n
c=0
while a!=0:
r=a%10
a=a//10
c=c*10 + r
if n==c:
print("palindrome")
else:
print("not palindrome")
num1=int(input("Enter a number: "))
Palin(num1)
OUTPUT:
Q3) Write a Python code to input a number and use a function def
Armstrong() to receive the number. The method will return 1 if the
number is Armstrong, otherwise it will return 0.
For example, 153 is an Armstrong number because 13+53+33= 153

Solution :
def Armstrong(n):
b=n
len1 = len(str(n))
s=0
while b!=0:
r = b%10
s += r**len1
b = b//10
if s == n:
return 1
else:
return 0
num = int(input("Enter a number: "))
if Armstrong(num) == 1:
print(f"{num} is an Armstrong number.")
else:
print(f"{num} is not an Armstrong number.")
OUTPUT:
Q4) Write a Python code to accept a string in a mixed case. Pass the
string to a function def Freq (String). The function should find and
display the frequency of each vowel.
Sample Input: Understanding Computer Science
Sample Output: Frequency of 'a' or 'A' = 1
Frequency of 'e' or 'E' = 4
Frequency of 'i' or 'T' = 2
Frequency of 'o' or 'O' = 1
Frequency of 'u' or 'U' = 2

Solution :
def Freq(String):
String = String.lower()
vowels = {'a': 0, 'e': 0, 'i': 0, 'o': 0, 'u': 0}
for char in String:
if char in vowels:
vowels[char] += 1
for v in vowels:
print(f"Frequency of '{v}' or '{v.upper()}' = {vowels[v]}")
text = input("Enter a string: ")
Freq(text)
OUTPUT :

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