#2048
Next Greater Numerically Balanced Number
specialist · 715 · lc medium +30 · verified · 63% accepted · 553 likes · top 65%
Description
An integer x is numerically balanced if each digit d appearing in x occurs exactly d times within x. Given an integer n, return the smallest numerically balanced number that is strictly greater than n.
Example 1:
Input: n = 1
Output: 22
Explanation:
22 is numerically balanced since:
- The digit 2 occurs 2 times.
It is also the smallest numerically balanced number strictly greater than 1.
Example 2:
Input: n = 1000
Output: 1333
Explanation:
1333 is numerically balanced since:
- The digit 1 occurs 1 time.
- The digit 3 occurs 3 times.
It is also the smallest numerically balanced number strictly greater than 1000.
Note that 1022 cannot be the answer because 0 appeared more than 0 times.
Example 3:
Input: n = 3000
Output: 3133
Explanation:
3133 is numerically balanced since:
- The digit 1 occurs 1 time.
- The digit 3 occurs 3 times.
It is also the smallest numerically balanced number strictly greater than 3000.
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