Check if String is Palindrome in Python

Suppose we have alphanumeric string s. It can hold both uppercase or lowercase letters. We have to check whether s is a palindrome or not considering only the lowercase alphabet characters.

So, if the input is like s = "rLacHEec0a2r8", then the output will be True because the string contains "racecar" in lowercase, which is a palindrome.

To solve this, we will follow these steps −

• x := blank string

• for each character i in s, do

  • if i is in lowercase, then

    • x := x concatenate i

• return true when x is palindrome, otherwise false

Example

Let us see the following implementation to get better understanding

def solve(s):
   x = ""
   for i in s:
      if i.islower():
         x += i

   return x == x[::-1]

s = "rLacHEec0a2r8"
print(solve(s))

Input

"rLacHEec0a2r8"

Output

True