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How to check if a given string is a palindrome, in Python?

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Wissam answered on January 20, 2022 Popularity 9/10 Helpfulness 3/10

answer How to check if a given string is a palindrome, in Python?

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How to check if a given string is a palindrome, in Python?

Comment

"""
This implementation checks whether a given
string is a palindrome. A string is 
considered to be a palindrome if it reads the
same forward and backward. For example, "kayak"
is a palindrome, while, "door" is not. 

Let n be the length of the string

Time complexity: O(n), 
Space complexity: O(1)
"""
def isPalindrome(string):
    # Maintain left and right pointers
    leftIdx = 0
    rightIdx = len(string)-1
    while leftIdx < rightIdx:
        # If chars on either end don't match
        # string cannot be a palindrome
        if string[leftIdx] != string[rightIdx]:
            return False
        # Otherwise, proceed to next chars
        leftIdx += 1
        rightIdx -= 1
    return True

print(isPalindrome("kayak"))  # True
print(isPalindrome("door"))  # False

Popularity 9/10 Helpfulness 3/10 Language python

Source: Grepper

Tags: python string

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Contributed on May 25 2022

Wissam

0 Answers Avg Quality 2/10

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python check palindrome

Comment

s = input('enter string: ')
def palindrome(string):
    x = ""
    for i in string:
        x = i + x
    return x

if s == palindrome(s):
    print('its a palindrome')
else:
    print('its not a palindrome')

Popularity 10/10 Helpfulness 6/10 Language python

Source: Grepper

Tags: palindrome p

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Contributed on Nov 26 2022

Adam, the developer

0 Answers Avg Quality 2/10

python palindrome string

Comment

s = "001100"

if s == s[::-1]:
    print("palindrome string")
else:
    print("Not a palindrome string.")

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Source: Grepper

Tags: palindrome p

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Contributed on May 21 2022

Excited Earthworm

0 Answers Avg Quality 2/10

palindrome of a number in python

Comment

num=int(input("Enter a no.:"))
rev=0
num1=num
while num!=0:
    rev=rev*10+(num%10)
    num=num//10
if num1==rev:
    print(num1," is a palindrome")
else:
    print(num1," is not a palindrome")

Popularity 9/10 Helpfulness 5/10 Language python

Source: Grepper

Tags: palindrome p

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Contributed on Sep 09 2022

DHINESH M

0 Answers Avg Quality 2/10

How to check palindrom in python

Comments(1)

myString = "aba"
if myString == myString[::-1]:
	print("The string '" + myString + "' is a palindrome")
else:
	print("The string '" + myString + "' is not a palindrome")

Popularity 9/10 Helpfulness 5/10 Language python

Source: Grepper

Tags: python py

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Contributed on Jun 12 2022

Muhammad Mumtaz

0 Answers Avg Quality 2/10

How to check for palindromes in python

Comment

def is_palindrome(s):
  reverse = s[::-1]
  if (s == reverse):
    return True
  return False

s1 = 'racecar'
s2 = 'hippopotamus'

print('\'racecar\' a palindrome -> {}'.format(is_palindrome(s1)))
print('\'hippopotamus\' a palindrome -> {}'.format(is_palindrome(s2)))


# output

# 'racecar' is a palindrome -> True
# 'hippopotamus' is a palindrome -> False

Popularity 9/10 Helpfulness 4/10 Language python

Source: www.kdnuggets.com

Tags: python py

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Contributed on Jul 13 2022

OHIOLee

0 Answers Avg Quality 2/10

palindrome string python

Comment

a=input('enter a string :')# palindrome in string
b=a[::-1]
if a==b:
    
 print(a,'is a palindrome')
else:
 print(a,'is not a palindrome')
 print('a is not equal to b')
 if a!=b:
   print(b, 'the reverse of', a)
#output:
--------------------------------------------------------------------------------
case-I
# not palindrome
enter a string :1254
1254 is not a palindrome
a is not equal to b
4521 the reverse of 1254
--------------------------------------------------------------------------------
case-II
# palindrme
enter a string :12321
12321 is a palindrome

Popularity 9/10 Helpfulness 4/10 Language python

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Contributed on Jan 20 2022

Gr@Y_orphan_ViLL@in##

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Python - How To Check if a String Is a Palindrome

Comment

word = input() if str(word) == str(word)[::-1] :     print("Palindrome") else:     print("Not Palindrome")

Popularity 10/10 Helpfulness 4/10 Language python

Source: www.thecodeteacher.com

Tags: palindrome p

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Contributed on Jan 28 2022

thecodeteacher

0 Answers Avg Quality 2/10

check palindrome in python

Comment

string = input("Type a string: ")
if string[::-1] == string: 
	print(string,"This string is Palindrome")
else:
	print(string,"This string is not Palindrome")

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Source: Grepper

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Contributed on Jul 12 2022

The Legend Of Hridoy

0 Answers Avg Quality 2/10

how to check a string is palindrome or not in python

Comment

s = "001100"

if s == s[::-1]:
    print(s, "is a Palindrome string.")
else:
    print("Not a palindrome string.")

Popularity 9/10 Helpfulness 4/10 Language python

Source: Grepper

Tags: palindrome p

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Contributed on May 21 2022

Excited Earthworm

0 Answers Avg Quality 2/10

How to check if a given string is a palindrome, in Python?

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