Check Palindrome

#include<bits/stdc++.h>
using namespace std;
bool isPalindrome(string str)
{
int left = 0;
int right = str.length()-1;
while(str[left] == str[right] )
{
if(left == right-1 || left == right)
{
return true;
}
left++;
right--;
}
return false;
}

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