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package string;

/**

* Created by gouthamvidyapradhan on 09/12/2017. Given a non-empty string s, you may delete at most

* one character. Judge whether you can make it a palindrome.

*

* <p>Example 1: Input: "aba" Output: True Example 2: Input: "abca" Output: True Explanation: You

* could delete the character 'c'. Note: The string will only contain lowercase characters a-z. The

* maximum length of the string is 50000.

*/

public class ValidPalindromeII {

/**

* Main method

*

* @param args

* @throws Exception

*/

public static void main(String[] args) throws Exception {

System.out.println(new ValidPalindromeII().validPalindrome("aaaaaab"));

}

public boolean validPalindrome(String s) {

for (int i = 0, j = s.length() - 1; i < j; ) {

if (s.charAt(i) == s.charAt(j)) {

i++;

j--;

} else {

return isPaliandrome(s.substring(i, j)) || isPaliandrome(s.substring(i + 1, j + 1));

}

}

return true;

}

private boolean isPaliandrome(String s) {

for (int i = 0, j = s.length() - 1; i < j; ) {

if (s.charAt(i) == s.charAt(j)) {

i++;

j--;

} else return false;

}

return true;

}

}