Cody

Problem 47. Extract leading non-zero digit

Created by Cody Team in Community

Benford's Law states that the distribution of leading digits is not random. This is probably because many things grow logarithmically. Extract the leading digit from these vectors.

  • 10 --> 1
  • 13 --> 1
  • 0.3 --> 3
  • -4 --> 4
  • -5 --> 5
  • -0.006 --> 6

Input will be a vector

 x = [1 0.3 -2 0.001 -0.0006, 582398, 3020];

Output should be

 y = [1 3 2 1 6 5 3];

Solution Stats

47.39% Correct | 52.61% Incorrect
Last solution submitted on May 27, 2019

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