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

C#, 33 bytes

i=>Math.Abs(i).ToString().Length;

Answer 2

MATL, 4 bytes

47>s

Inspired by Martin's Retina answer: count how many characters have code point exceeding 47 (this excludes the minus sign).

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Answer 3

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 4

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

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

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Answer 5

C#, 28 bytes

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

Answer 6

C#, 24 bytes

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

Inspired from @DomHastings answer.

Answer 7

Chaincode, 5 bytes

pqL_+

Explanation

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

Answer 8

C, 43 bytes

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

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Answer 9

T-SQL, 38 bytes

CREATE PROC l @ BIGINT AS PRINT LEN(@)

Usage:

EXECUTE l @ = 9999999999

Answer 10

Lua, 26 bytes

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

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

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Answer 11

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 12

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 13

C, 71 38 bytes

• -33 bytes FelipeNardiBatista

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

Answer 14

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}

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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 15

Axiom, 23 Bytes

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

Answer 16

Desmos, 31 bytes

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

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Answer 17

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 18

MathGolf, 2 bytes

±£

Input as integers.

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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 19

Thunno 2, 2 bytes

Al

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length of the Absolute value of the implicit input.

Answer 20

Uiua^SBCS, 4 bytes

⧻°⋕⌵

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Explanation

⧻°⋕⌵
   ⌵ absolute value
 °⋕  convert to string
⧻    length

Answer 21

JavaScript (Node.js), 18 bytes

f=x=>x&&-~f(x/10n)

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JavaScript (Node.js), 21 bytes

x=>(x+[-x]).length>>1

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19 if input as string, but worse than Johan Karlsson's answer then