Classify the following as indoor, outdoor, activities or both: basketball, hiking, soccer, rock climbing, mountaineering, swimming.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Classify the following as indoor, outdoor, activities or both: basketball, hiking, soccer, rock climbing, mountaineering, swimming.

### Response:

Basketball, soccer, rock climbing and swimming are both indoor and outdoor activities. Mountaineering and hiking are outdoor activities.