```
class Solution(object):
def plusOne(self, digits):
"""
:type digits: List[int]
:rtype: List[int]
"""
return [int(i) for i in str(int(''.join([str(digit) for digit in digits]))+1)]
```

- Make list of strings
- Join them
- convert to int
- Add one
- Convert to string
- Return list comprehensions