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Next higher palindromic number using the same set of digits
Medium Accuracy: 39.81% Submissions: 7987 Points: 4

Given a palindromic number N in the form of string. The task is to find the smallest palindromic number greater than N using the same set of digits as in N.

Example 1:

Input:
N = "35453"
Output:
53435
Explanation: Next higher palindromic
number is 53435.


Example 2:

Input: N = "33"
Output: -1
Explanation: Next higher palindromic number
does not exist.

You don't need to read input or print anything. Your task is to complete the function nextPalin() which takes the string as input parameters and returns the answer, else if no such number exists returns "-1".

Expected Time Complexity: O(|N|log|N|)
Expected Auxiliary Space: O(1)

Constraints:
1 ≤ |N| ≤ 105

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