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(a)
(b)
(c)
(d)
F
IGURE
18.19
A Hilbert curve with the specified order is drawn.
**18.38
(
Recursive tree
) Write a program to display a recursive tree as shown in
FigureĀ 18.20.
VideoNote
Recursive tree
(a)
(b)
(c)
(d)
F
IGURE
18.20
A recursive tree with the specified depth is drawn.
**18.39
(
Dragging the tree
) Revise Programming Exercise 18.38 to move the tree to
where the mouse is dragged.
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