Complete the solution so that the function will break up camel casing, using a space between words.
### Example 
```
solution("camelCasing")  ==  "camel Casing"
```
def solution(s):
    newStr = ""
    for letter in s:
        if letter.isupper():
            newStr += " "
        newStr += letter
    return newStr
def solution(s):
    newStr = ""
    for letter in s:
        if letter.isupper():
            newStr += " "
        newStr += letter
    return newStr