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Recursion: Count The Digits

JavaScriptHardrecursionnumbersmath

Instructions

Create a function that will recursively count the number of digits of a number. Conversion of the number to a string is not allowed, thus, the approach is recursive.

Examples

digitsCount(4666) ➞ 4

digitsCount(544) ➞ 3

digitsCount(121317) ➞ 6

digitsCount(0) ➞ 1

digitsCount(12345) ➞ 5

digitsCount(1289396387328L) ➞ 13

Notes

  • All inputs are integers but some are in exponential form, deal with it accordingly.
  • You are expected to come up with a solution using the concept of recursion or the so-called recursive approach.
  • An iterative version of this challenge can be found via this link.
  • A collection of challenges alike can be found via this link.
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Walks through the solution with reasoning and edge cases.