String-680. Valid Palindrome II

Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome.

Example 1:

Input: "aba"
Output: True

 

Example 2:

Input: "abca"
Output: True
Explanation: You could delete the character 'c'.

 

Note:

1. The string will only contain lowercase characters a-z. The maximum length of the string is 50000.

 

class Solution {
public:
    bool validPalindrome(string s) {
        int i,j;
        int si,sj;
        int n=s.size();
        int count=0;
        int way=0;
        for(i=0,j=n-1;i<j;i++,j--){
            if(s[i]==s[j])
                continue;
            else{
                if(way==2){
                   return false;
                }
                if(way==1){
                    way++;
                    i=si;
                    j=sj;
                    j++; 
                }
                if(way==0){
                    way++;
                    count=1;
                    si=i;
                    sj=j;
                    i--;
                }
            }  
        }
        return true;
    }
};

（判断是否回文）