Methods
void close()
int read()
reads and returns a chracter.
int read(char[] characterArray)
populates an array of characters with data.
boolean ready()
- returns “true” if there is data available.
……
public class CircleMenuCanvas extends Canvas implements Runnable{
double pi = Math.PI
public final int MENURIGHT = 1
public final int MENULEFT = 0
Image menuImage[] = new Image[6]
int []jiaodu = {330,30,90,150,210,270}
String menuName[] = {"新游戲","繼續游戲","游戲設置","高分榜","游戲幫助","退出游戲"}
int x = getWidth()/2
int y = getHeight()/2
int count = 0
int local
int index = 0
Font f
boolean running = false
/**
* 構造方法
*
*/
Specification File
adjacencyListGragh
class GeneralGraph:
use adjacency list to implement the graph which data structure is vector
Construct methods:
* public GeneralGraph():
contain an empty vector store the vertex and a boolean determines whether graph is directed or not, defaulted is undirected
Generate Possion Dis.
step1:Generate a random number between [0,1]
step2:Let u=F(x)=1-[(1/e)x]
step3:Slove x=1/F(u)
step4:Repeat Step1~Step3 by using different u,you can get x1,x2,x3,...,xn
step5:If the first packet was generated at time [0], than the
second packet will be generated at time [0+x1],The third packet will be generated at time [0+x1+x2],
and so on ….
Random-number generation
1.static method random from class Math
-Returns doubles in the range 0.0 <= x < 1.0
2.class Random from package java.util
-Can produce pseudorandom boolean, byte, float, double, int, long and Gaussian values
-Is seeded with the current time of day to generate different sequences of numbers each time the program executes
