How long is my number?

Question

Challenge

Given an integer \$Q\$ in the range \$-2^{100} ≤ Q ≤ 2^{100}\$, output the number of digits in that number (in base 10).

Rules

Yes, you may take the number as a string and find its length.

All mathematical functions are allowed.

You may take input in any base, but the output must be the length of the number in base 10.

Do not count the minus sign for negative numbers. The number will never have a decimal point.

Zero can either have one or zero digits.

Assume the input will always be a valid integer.

Examples

Input > Output

-45 > 2
12548026 > 8
33107638153846291829 > 20
-20000 > 5
0 > 1 or 0

Winning

Shortest code in bytes wins.

Answer 1

Braingolf, 2 bytes

dl

Explaination:

dl
    Implicit input from command-line args to stack
d   Pop last item from stack, split it into digits, and push each digit to the stack
 l  Push length of stack to the end of the stack
    Implicit output of last item on stack

Answer 2

Brain-Flak, 48 + 3 ( -a) = 51 bytes

({}[((((()()()()())){}{})){}{}]){(<><>)}{}([]<>)

Try it online!

Answer 3

C#, 28 bytes

s=>s.Replace("-","").Length;

Answer 4

C#, 24 bytes

n=>$"{n>0?n:-n}".Length;

Inspired from @DomHastings answer.

Answer 5

Chaincode, 5 bytes

pqL_+

Explanation

pqL_+ print(
    +   succ(
   _      floor(
  L        log_10(
pq           abs(
               input())))))

Answer 6

C, 43 bytes

f(char*s){printf("%d",strlen(s)-(*s==45));}

Try it online

Answer 7

T-SQL, 38 bytes

CREATE PROC l @ BIGINT AS PRINT LEN(@)

Usage:

EXECUTE l @ = 9999999999

Answer 8

Lua, 26 bytes

Replaces all occurrences of '-' with the empty string '' and get length with #.

print(#(...):gsub('-',''))

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Answer 9

MATL, 6 bytes

nGU0<-

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Explanation

n     % Implicitly input a string. Push its length
G     % Push input again
U     % Convert to number (floating-point double). Although integers with absolute
      % value exceeding 2^53 cannot be represented exactly, the sign is correct
0<    % Is it negative?
-     % Subtract. Implicitly display

Answer 10

Perl 5, 9 bytes + 3 for -F flag=12 bytes

say@F-/-/

Run like perl -F -E 'say@F-/-/'. Takes a single number from stdin without a trailing newline. Can add the -l flag at the cost of an extra byte if you would rather have it accept a trailing newline.

The -F flag auto splits stdin into the array @F. In scalar context, @F evaluates to the length of the array, which is the number of characters in $_ (which comes from stdin). /-/ in a numerical context evaluates to 1 if $_ has a minus sign in it or 0 if $_ does not have a minus sign in it, so @F-/-/ evaluates to the number of non-minus sign characters (i.e. the number of digit characters) read from stdin.

Answer 11

C, 71 38 bytes

• -33 bytes FelipeNardiBatista

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f(char*t){return*t?(*t>'-')+f(t+1):0;}

Answer 12

Swift, 138 bytes

You would think there would be an easier way to do this.

import Foundation;var d:(String)->Int={return $0.trimmingCharacters(in:CharacterSet(charactersIn:"0123456789").inverted).characters.count}

You can try it here

Un-golfed:

import Foundation // Import the Foundation module

var d:(String)->Int={ // Create a closure that takes in a String and returns an Int

    return // Return the following

    $0.trimmingCharacters(in:  // Removes all characters in the following CharacterSet

        CharacterSet(charactersIn:"0123456789").inverted // Create a CharacterSet with all characters that are not digits

    ).characters.count // Get the length of the resulting String
}

Answer 13

Axiom, 23 Bytes

f(x)==#(abs(x)::String)

Answer 14

Desmos, 31 bytes

g=abs(a)
f(a)=floor(log(g+0^g))

Try it on Desmos!

Answer 15

Batch, 101 bytes

@set/pi=
@set o=-1&if %i:~,1%==- set o=-2
:l
@set/ao+=1&if %i%. neq . set i=%i:~,-1%&goto:l
@echo %o%

---

89 bytes

@set/pi=
@if %i% lss 0 set/ai=-%i%
:l
@set/ao+=1&if %i% gtr 9 set/ai/=10&goto:l
@echo %o%

Only works for 32-bit numbers.

Answer 16

MathGolf, 2 bytes

±£

Input as integers.

Try it online.

I'm actually surprised builtin £ works on integers. I was expecting I would need an explicit cast, since that's the case with a lot of MathGolf's builtins.

Explanation:

±   # Get the absolute value of the (implicit) input-integer
 £  # Pop and get the length of this integer
    # (after which the entire stack is output implicitly as result)

Answer 17

Japt, 2 bytes

ìl

Try it

ìl     :Implicit input of integer
ì      :Convert to digit array
 l     :Length