Question

A palindrome is a word or a phrase that is the same when read both forward and backward. Examples are: "bob," "sees," or "never odd or even" (ignoring spaces). Write a program whose input is a word or phrase, and that outputs whether the input is a palindrome.

user_string = input()

low = 0
high = len(user_string)-1
result = True
while low < high:
if (user_string[low] == ' '):
low += 1
elif (user_string[low]!=user_string[high]):
result = False
break
low += 1
high -= 1

if result:
print(user_string, 'is a palindrome')
else:
print(user_string, 'is not a palindrome')

could someone please explain to me line by line of this program!!. I don't understand high and low... Is there another variable that makes sense?

the language is Python  

Answer 1

CODE :

# we take input from user

user_string = input()

# low is used for the representing starting index

low = 0

# high is used for the last index .
high = len(user_string)-1
result = True
while low < high:

# if starting index of string is space  we will increase the index value
if (user_string[low] == ' '):
low += 1

#if starting index string is not equal to last index of string then print false. Else print the string is palindrome.
elif (user_string[low]!=user_string[high]):
result = False
break
low += 1
high -= 1

if result:
print(user_string, 'is a palindrome')
else:
print(user_string, 'is not a palindrome')

NOTE : PLEASE GIVE ME UP VOTE .THANK YOU.