Now posted: How many odd digits?

Given a positive integer, count its odd digits.

Input

• An integer from 1 to 999,999,999, inclusive.

Output

• The number of odd digits in the input.

Test cases

Test cases are in the format input : output.

1 : 1
2 : 0
3 : 1
4 : 0
5 : 1
6 : 0
7 : 1
8 : 0
9 : 1
10 : 1
11 : 2
12 : 1
13 : 2
14 : 1
15 : 2
16 : 1
17 : 2
18 : 1
19 : 2
20 : 0
111111111 : 9
222222222 : 0
123456789 : 5
999999999 : 9

Scoring

This is a code golf challenge. Your score is the number of bytes in your code. Lowest score for each language wins.

Explanations are optional, but I'm more likely to upvote answers that have one.

posted 3 months ago

CC BY-SA 4.0

3mo ago

trichoplax‭

1020 reputation 83 17 129 471