def sort(a, b):
    i = 0
    while i < len(a) - 1:
        if a[i] < b[i]:
            temp = b[i + 1]
            b[i + 1] = b[i]
            b[i] = temp
        elif a[i] > b[i]:
            temp = a[i + 1]
            a[i + 1] = a[i]
            a[i] = temp
        i += 1

    i = 0
    while i < len(a) - 1:
        if a[i] != b[i]:
            sort(a, b)
            break
        i += 1


list1 = [1, 1, 7, 3, 2]
list2 = [2, 1, 3, 7, 1]

sort(list1, list2)

print(list1)
print(list2)