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Next higher palindromic number using the same set of digits
Medium Accuracy: 50.3% Submissions: 2455 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.

 

Your Task:  
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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Next higher palindromic number using the same set of digits

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