def quick_sort(a):
    if len(a) > 1:
        return quick_sort(list(filter(lambda x: x < a[0], a))) + list(filter(lambda x: x == a[0], a)) + quick_sort(list(filter(lambda x: x > a[0], a)))
    else:
        return a

a = [7,1,2,4,8,3]
print(a)
print(quick_sort(a))