400. Nth Digit

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Given an integer n, return the nth digit of the infinite integer sequence [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ...]. Example 1: Input: n = 3 Output: 3 Example 2: Input: n = 11 Output: 0 Explanation: The 11th digit of the sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ... is a 0, which is part of the number 10. Constraints: - 1 <= n <= 231 - 1

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solution.cppC++17

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