Page 506 - Computer Science V2.0 Class 11

Program 7: Write a function palindrome(num) that takes num as an input and checks whether the num is a
palindrome or not. A palindromic number (also known as a numeral palindrome or a numeric palindrome) is a number
(such as 16461) that remains the same when its digits are reversed. Invoke the function to print an appropriate
message for the user-entered number.

Ans. def palindrome(num):
'''

Objective : To check whether a number is a palindrome
Input Parameter : num - numeric value
Return Value : 1 - if number is palindrome, 0 otherwise
'''
n = num #storing the number for later usage

reverseNum = 0
remainder = 0
while num > 0:
remainder = num %10
reverseNum = reverseNum * 10 + remainder
num //= 10
if n == reverseNum:

return 1
else:
return 0

num = int(input("Enter a number: "))

result = palindrome(num)
if result == 1:
print(num, 'is palindrome')
else:
print(num, 'is not palindrome')
Program 8: Write a function checkPrime(num) that takes num as an input and checks whether num is a prime or
not. Prime numbers are natural numbers that are divisible by only 1 and the number itself. Invoke the function to print
an appropriate message for the user-entered number.

Ans. def checkPrime(num):
'''

Objective: To check whether a number is prime.
Input: num: the number to be tested for primeness
Return Value: The message indicating whether n is prime
'''

upperLimit = num
for i in range(2, num):
if num % i == 0:

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