Next Greater Number Problem Statement
Given a string S
which represents a number, determine the smallest number strictly greater than the original number composed of the same digits. Each digit's frequency from 0-9 must match the original.
Input:
The first line is an integer T, the number of test cases.
Each test case contains one line with the string S.
Output:
For each test case, output the smallest number strictly greater using the same set of digits or -1 if it doesn't exist.
Example:
If given S = '56789'
, the output should be 56798
. Note that 56790
is also greater but uses different digits.
Constraints:
1 ≤ T ≤ 100
1 ≤ len(S) ≤ 104
- The function has a time limit of 1 second.
Note:
The input string is non-empty with no leading zeros. Implement the function; printing is handled elsewhere.
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Given a number represented as a string, find the smallest number greater than the original with the same digits.
Iterate from right to left to find the first digit that can be swapped with a smaller di...read more
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