# Several Java Probelm 代寫

<标题>Several Java Probelm 代寫

Problem 1. (Dragon Curves) Write a program Dragon that takes an int value N as

<标题>command-line argument and prints the instructions for drawing the dragon curve of

order N. The instructions are strings of F, L, and R characters, where F means “draw

line while moving 1 unit forward,” L means “turn left,” and R means “turn right.” A

<标题>dragon curve of order 0 is just the character F, and a curve of order N is a curve of order

<标题>N ?1 followed by an L followed by a curve of order N ?1 traversed in reverse order with

R replaced by L and L replaced by R.

<标题>\$ java Dragon 0

F

\$ java Dragon 1

FLF

\$ java Dragon 2

FLFLFRF

<标题>\$ java Dragon 3

<标题>FLFLFRFLFLFRFRF

<标题>Dragon curves of orders 0, 1, 2, and 3 and the corresponding instructions are shown

below.

Problem 2. (Visualizing Dragon Curves) Write a program DragonPlot that reads from

standard input the instructions produced by Dragon (from Problem 1) for drawing a

dragon curve, generates a drawing of the curve (shown below), and saves it in a file