UC知道JAVA编程：怎样将得到的一组频率值画成频率曲线？
来源：百度知道 编辑：UC知道 时间：2024/06/14 01:40:29
我的程序是这样的，但后面画线不行．哪位高手指教一下哈．
import java.awt.*;
import java.applet.*;
public class drawing extends Applet
{
public void paint(Graphics g)
{
String s="change";
char a[]=s.toCharArray();
int k1=3;
int k2=7;
for(int i=0;i<a.length;i++)
{
a[i]=(char)((((int)a[i]-97)*k1+k2)%26+97);
}
String secret=new String(a);
System.out.println("the code is :"+secret);
g.drawString("the code is :"+secret,10,10);
double count0=0;
for(int i=0;i<a.length;i++)
{
if(a[i]!=' ')
count0++;
}
System.out.println("the total number is: "+count0);
g.drawString("the total number is :"+count0,10,30);
for(int j=97;j<123;j++)
{
double count=0;
import java.awt.*;
import java.applet.*;
public class drawing extends Applet
{
public void paint(Graphics g)
{
String s="change";
char a[]=s.toCharArray();
int k1=3;
int k2=7;
for(int i=0;i<a.length;i++)
{
a[i]=(char)((((int)a[i]-97)*k1+k2)%26+97);
}
String secret=new String(a);
System.out.println("the code is :"+secret);
g.drawString("the code is :"+secret,10,10);
double count0=0;
for(int i=0;i<a.length;i++)
{
if(a[i]!=' ')
count0++;
}
System.out.println("the total number is: "+count0);
g.drawString("the total number is :"+count0,10,30);
for(int j=97;j<123;j++)
{
double count=0;
drawLine接受的参数是像素点，所以必须是四个整型，而不会对浮点型自行回归。由于频率值小于1，所以取整前先进行放大。
这是我改动后可以运行并画出折线图的代码，虽然折线图画的位置不好看。
============== Souce Code ==================
import java.awt.*;
import java.applet.*;
public class drawing extends Applet {
public void paint(Graphics g) {
String s = "change";
char a[] = s.toCharArray();
int k1 = 3;
int k2 = 7;
for (int i = 0; i < a.length; i++) {
a[i] = (char) ((((int) a[i] - 97) * k1 + k2) % 26 + 97);
}
String secret = new String(a);
System.out.println("the code is :" + secret);
g.drawString("the code is :" + secret, 10, 10);
double count0 = 0;
for (int i = 0; i < a.length; i++) {
if (a[i] != ' ')
count0++;
}
System.out.println("the total number is: " + count0);
g.drawString("the total number is :" + co