Sort array by last character
Complete the function to sort a given array or list by last character of elements.
```if-not:haskell
Element can be an integer or a string.
```
### Example:
```
['acvd', 'bcc']  -->  ['bcc', 'acvd']
```
The last characters of the strings are `d` and `c`. As `c` comes before `d`, sorting by last character will give `['bcc', 'acvd']`.
If two elements don't differ in the last character, then they should be sorted by the order they come in the array.
```if:haskell
Elements will not be empty (but the list may be).
```
def sort_me(arr):
    return sorted(arr, key=lambda e: str(e)[-1])
def sort_me(arr):
    return sorted(arr, key=lambda e: str(e)[-1])