Leetcode 2048. Next Greater Numerically Balanced Number

Find the smallest integer > n such that for every digit d in the number, digit d appears exactly d times. The core challenge is generating/validating the constrained set of possible digit-count combinations (which is small due to the digit-count rules and n ≤ 10^6) and selecting the minimal candidate greater than n.

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Leetcode 2048. Next Greater Numerically Balanced Number

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