Double pointer palindrome string

A daily topic ing, Today is a day easy topic 680. Valid Palindrome II

class Solution {
    
public:
    static bool checkPalindrome(string s,int low,int high){
    
        for(int i=low,j=high;i<j;i++,j--){
    
            if(s[i]!=s[j]){
    
                return false;
            }
        }
        return true;
    }

    bool validPalindrome(string s) {
    
        int i=0,j=s.size()-1;
        while(i<j){
    
            if(s[i]!=s[j]){
    
                return checkPalindrome(s,i,j-1)||checkPalindrome(s,i+1,j);
            }
            else{
    
                i++;j--;
            }
        }
        return true;
    }
};