## Solution 1
```python
def solution(nums):
minimum = float('inf')
answer = 0
for index, value in enumerate(nums):
if value < minimum:
minimum = value
answer = index
return answer
print(solution([7, 10, 5, 3, 2, 15, 19]))
print(solution([-12, 12, 30, -15, -5, 3, 9, -11, 14]))
print(solution([17, 11, 5, 8, 23, 29, 19, 12, 25, 16, 2]))
print(solution([7, 5, 12, -9, -12, 22, -30, -35, -21]))
```