# Given an array length 1 or more of ints, return the difference between the
# largest and smallest values in the array. Note: the built-in min(v1, v2)
# and max(v1, v2) functions return the smaller or larger of two values.

def big_diff(nums):
    return max(nums) - min(nums)


print(big_diff([10, 3, 5, 6])) # 7
print(big_diff([7, 2, 10, 9])) # 8
print(big_diff([2, 10, 7, 2])) # 8
