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Next Greater Element



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Next Bigger Number with Same Digits

Next Bigger Number with Same Digits

Problem Statement

Given a positive integer num within the range of 1 to 2,000,000,000, find the smallest integer greater than num that contains exactly the same digits as num. If such a number does not exist or is outside the allowed range, return -1.

Examples

Input: 123
Output: 132
    
Input: 321
Output: -1
    
Input: 59876
Output: 65789

Constraints

  • 1 ≤ num ≤ 2,000,000,000