Problem 45818. Extract leading non-zero digit (★★★★★)
(Copy of Problem 47)
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];
Avoid using for/while loops.
Solution Stats
Problem Comments
Solution Comments
Show commentsProblem Recent Solvers27
Suggested Problems
-
Find the maximum number of decimal places in a set of numbers
2529 Solvers
-
Set some matrix elements to zero
509 Solvers
-
508 Solvers
-
556 Solvers
-
164 Solvers
More from this Author52
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!