Пример #1
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def lower_bound(z):
    return min([car(z), cdr(z)])
Пример #2
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def upper_bound(z):
    return max([car(z), cdr(z)])
Пример #3
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def x_point(point):
    return car(point)
Пример #4
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def start_segment(segment):
    return car(segment)
Пример #5
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def list_ref(items, n):
    if (n == 0):
        return car(items)

    return list_ref(cdr(items), n - 1)
Пример #6
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def left_top(rectangle):
    return car(rectangle)
Пример #7
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def append(list1, list2):
    if null(list1):
        return list2

    return cons(car(list1), append(cdr(list1), list2))
Пример #8
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def numer(x):
    return car(x)
Пример #9
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from util_pair import cons, car, cdr, list, print_list

x = cons(1, cons(2, cons(3, cons(4, None))))
print_list(x)

one_through_four = list([1, 2, 3, 4])
print_list(one_through_four)
print(car(one_through_four))
print_list(cdr(one_through_four))
print(car(cdr(one_through_four)))
print_list(cons(10, one_through_four))
print_list(cons(5, one_through_four))
Пример #10
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def numer(x):
    g = gcd(car(x), cdr(x))

    return int(car(x) / g)
Пример #11
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def denom(x):
    g = gcd(car(x), cdr(x))

    return int(cdr(x) / g)