Palindrome String
Easy Accuracy: 50.77% Submissions: 58584 Points: 2

Given a string S, check if it is palindrome or not.

Example 1:

Input: S = "abba"
Output: 1
Explanation: S is a palindrome

Example 2:

Input: S = "abc" 
Output: 0
Explanation: S is not a palindrome


Your Task:  
You don't need to read input or print anything. Complete the function isPlaindrome() which accepts string S and returns a boolean value

Expected Time Complexity: O(Length of S) 
Expected Auxiliary Space: O(1) 

1 <= Length of S <= 105

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Palindrome String

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