How can I change this code so that it can check palindrome for both integer and string?

Question

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I wrote a code which is giving output for string input but not for integer input.

What I have tried:

def check_palindrome(string):
    length = len(string)
    first = 0 #first character
    last = length -1 #last character
    status = 1
    while(first<last):
           if(string[first]==string[last]): #checking if the increment and decrement
                                            #of the first and last characters results in equal character
               first=first+1 #incrementing first character by 1
               last=last-1 # decrementing last character by 1
           else:
               status = 0
               break
    return int(status) #true or false
string = input("Enter the string: ")

status= check_palindrome(string)
if(status):
    print("It is a palindrome ")
else:
    print("Not a palindrome")

Posted 26-May-20 4:03am

Member 14842958

Updated 26-May-20 4:29am

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2 solutions

Solution 1

Two ways:
1) Write a separate method that takes an integer parameter and checks for palindrome integers by converting it to a string, and passing the string to your existing method. Quick and dirty, inefficient as heck, but hey! It works.
2) Write a separate method that takes an integer parameter, and does the same as your existing method, but extracting each digit using the BitwiseOperators - Python Wiki[^] - AND and SHIFT should do it.

Posted 26-May-20 4:29am

OriginalGriff

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

phil.o · Accepted Answer · 2020-05-26T04:31:00

Solution 2

Simply transform the integer into its string representation before passing it to your function. Palindromes are always string related.

Python

result = check_palindrome(str(intValue))

Posted 26-May-20 4:31am

phil.o

Comments

Member 14842958 28-May-20 5:50am

It's not working when I am testing with 123454321 and 78493.

phil.o 28-May-20 6:05am

Then debug your code to see where is the issue.
The python debugger

I do not understand why you don't return True or False from your function. Python has a boolean type, so why no using it?

status = True  # instead of status = 1
status = False # instead of status = 0
return status  # instead of return (int)status

Member 14842958 28-May-20 6:31am

because its hard coding. Isn't it?

phil.o 28-May-20 6:48am

No, because there is no obvious reason for not using a boolean type when it actually exists :)

How can I change this code so that it can check palindrome for both integer and string?

2 solutions

Solution 2

Solution 1

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How can I change this code so that it can check palindrome for both integer and string?

2 solutions

Solution 2

Solution 1

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