Slicing and Reversing

Pictures help when trying to understand slicing, especially when using negative indexes along with positive indexes.

String sample

1. `str[:0:-1]`

2. `str[:3:-1]`

3. `str[:2:-1]`

4. `str[-2:-6:-1]`

5. `str[-4:-1:-1]`

6. `str[-4:1:-1]`

7. `str[-3:1:-1]`

8. `str[-4:-1:]`

9. `str[-4:2:]`

10. `str[-2:-1:]`

11. `str[::-1]`