-4
#Exercise 9: Check Palindrome Number

#Numbers stored in x/y

x = 121
y = 125

#Transferred int in list

num_y = list(str(y))
num_x = list(str(x))

#Flipping the list

rev_y = num_y[::-1]
rev_x = num_x[::-1]

#Compare the flip if they are palindrome

if num_y == rev_y:
    print("Yes. given number is palindrome number")
else:
    print("No. given number is not palindrome number")

if num_x == rev_x:
    print("Yes. given number is palindrome number")
else:
    print("No. given number is not palindrome number")
Timur Shtatland
  • 12,024
  • 2
  • 30
  • 47
Max Benen
  • 35
  • 5
  • 2
    Do you know how to define a function in general, or just not how to define this particular function? – chepner Jun 22 '22 at 19:01
  • 4
    This is better suited for https://codereview.stackexchange.com. – buran Jun 22 '22 at 19:01
  • Welcome back to Stack Overflow. What actually do you find difficult about the problem? Did you make any attempt to solve the problem yourself? If you did, what went wrong, and what *specific* question do you have about fixing the issue? – Karl Knechtel Jun 22 '22 at 19:05

4 Answers4

1

Define a function using def.
No need to change the integer argument converted to string into a list. Just operate with the string - it supports slicing to reverse the string.
Return True or False from the function depending on whether the string is the same as the reverse string.

def is_palindrome(n):
    s = str(n)
    return s == s[::-1]

x = 121
print(is_palindrome(x))
# True

y = 125
print(is_palindrome(y))
# False
Timur Shtatland
  • 12,024
  • 2
  • 30
  • 47
0

You should use a function.

def print_if_number_is_palindrom(number):
    if str(number) == str(number)[::-1]:
       print("Yes, given number is palindrome number")
    else:
       print("No, given number is not palindrome number")

x = 121
y = 125
print_if_number_is_palindrom(x)
print_if_number_is_palindrom(y)
robni
  • 904
  • 2
  • 6
  • 20
0

The Goal:

  • Clean up code
  • Move the main logic to a function

Approach:

  • Create generalized function which can be used for any type of palindrome
  • Pass numbers into function as string

Result

def is_palindrome(term):
    for i in range(len(term)):
        if term[i] != term[(len(term)-i-1)]:
            return False
    return True

num_x = str(121)
print('num_x palendrome?',is_palindrome(num_x))

output -> 'num_x palindrome? True'

num_y = str(122)
print('num_y palendrome?',is_palindrome(num_y))

output -> 'num_x palindrome? False'

Note:

Technically a method is a function defined within a class. As such what you are actually asking for is this:

class ClassExample():
    
    def __init__(self):
        self.string = ''
        
    def is_palindrome(self,term):
        for i in range(len(term)):
            if term[i] != term[(len(term)-i-1)]:
                return False
        return True
    
ex = ClassExample()

Test:

ex.is_palindrome('121')
DonCarleone
  • 544
  • 11
  • 20
0

here is Sorter method:

num = '1421'
if num == str(num)[::-1]:
    print('The given number is PALINDROME')
else:
    print('The given number is NOT a palindrome')

output:

The given number is NOT a palindrome

This will help you.

devendra parihar
  • 36
  • 3