How do I count the trailing zeros in integer?

Question

I am trying to write a function that returns the number of trailing 0s in a string or integer. Here is what I am trying and it is not returning the correct values.

Answer 1

You could just:

1. Take the length of the string value of what you're checking
2. Trim off trailing zeros from a copy of the string
3. Take the length again, of the trimmed string
4. Subtract the new length from the old length to get the number of zeroes trailing.