# Given an array of ints length 3, return a new array with the elements
# in reverse order, so {1, 2, 3} becomes {3, 2, 1}.

# reverse3([1, 2, 3]) -> [3, 2, 1]
# reverse3([5, 11, 9]) -> [9, 11, 5]
# reverse3([7, 0, 0]) -> [0, 0, 7]

def reverse3(nums):
  nums.reverse()
  return nums

print(reverse3([1, 2, 3]))
print(reverse3([5, 11, 9]))
print(reverse3([7, 0, 0]))

# Given an array of ints length 3, return a new array with the elements
# in reverse order, so {1, 2, 3} becomes {3, 2, 1}.

# reverse3([1, 2, 3]) --> [3, 2, 1]
# reverse3([5, 11, 9]) --> [9, 11, 5]
# reverse3([7, 0, 0]) --> [0, 0, 7]

def reverse3(nums):
  nums.reverse()
  return nums

print(reverse3([1, 2, 3]))
print(reverse3([5, 11, 9]))
print(reverse3([7, 0, 0]))

Update reverse3.py