#400
Nth Digit
expert · 1110 · lc medium +32 · verified · 37.4% accepted · 1,241 likes · top 16%
Description
Write all positive integers one after another to form the infinite digit string "123456789101112131415...". Given an integer n, return the digit at position n in this string (using 1-based indexing).
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.
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