MATLAB Answers

how to count a number of digits.

46 views (last 30 days)
How to count a number of digits in a given number withoud using numel and length(num2string()). probably use for loop or while loop.

Accepted Answer

Walter Roberson
Walter Roberson on 3 Nov 2011
Well, there is log10(). Or there is counting digits upward until your number is smaller than 10^digits. There are other counting methods too.
One question you are going to have to deal with is what to do if the number is negative. Another question to deal with is what to do if the number is between -1 and +1, such as 0.00043
  4 Comments
komal Bhandari
komal Bhandari on 3 Nov 2011
I got it sir. do not worry.

Sign in to comment.

More Answers (2)

Jake Bolanski
Jake Bolanski on 3 Nov 2011
I'd go with what Walter mentioned. However, in general length is the ideal way to go.
  1 Comment
Walter Roberson
Walter Roberson on 3 Nov 2011
length() of the formatted string is considerably slower than log10.

Sign in to comment.


Melisa Sahin
Melisa Sahin on 23 Jun 2020
How counts of number digits use a recursion function ?

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!