语源科技BlogJava-沉默奔跑者

冒泡排序(过程显示)

沉默奔跑者 — Tue, 11 Mar 2008 03:08:00 GMT

import java.awt.*;
import java.applet.*;

public class BubbleSort extends Applet {

    Label prompt=new Label("请输入欲排序的整数数据(最多10个): ");
    TextField input=new TextField(5);
    Button sortbtn=new Button("排序");
    int[]  DataArray=new int[10];
    int DataInputed=0;
    int[][] SortPro=new int[11][10];

    public void init()
    {
        add(prompt);add(input);add(sortbtn);
    }
    public void paint(Graphics g){

        for(int i=0;i<SortPro.length;i++)
        for(int j=0;j<SortPro[i].length;j++)
        g.drawString(Integer.toString(SortPro[i][j]),10+30*j,40+20*i);
    }


    public boolean action(Event e,Object o){
        if(e.target==input){
            DataArray[DataInputed++]=Integer.parseInt(input.getText());
            if(DataInputed<10){
                prompt.setText("已输入"+DataInputed+"个数据，请继续");
                input.setText("");
            }
            else
            {prompt.setText("已输入10个数据，不能再输入了");
            input.hide();
            }
        }
        if(e.target==sortbtn)
        {for(int i=0;i<DataArray.length;i++)
        SortPro[0][i]=DataArray[i];
        SortProcedure();
        repaint();
        }
        return true;
        }
        void SortProcedure(){
        int pass,i,temp,exchangeCnt;
        for(pass=0;pass<DataArray.length;pass++)
        {
            exchangeCnt=0;
            for(i=0;i<DataArray.length-pass-1;i++)
    {    if(DataArray[i]>DataArray[i+1])
        {temp=DataArray[i];
        DataArray[i]=DataArray[i+1];
        DataArray[i+1]=temp;
        exchangeCnt++;
        }
        }
        for(i=0;i<DataArray.length;i++)
        SortPro[pass+1][i]=DataArray[i];
        if(exchangeCnt==0)
        return;
        }
        }
        }

沉默奔跑者 2008-03-11 11:08 发表评论

使用命令行参数

沉默奔跑者 — Tue, 11 Mar 2008 01:44:00 GMT

public class CommandLineParam {
    public static void main(String args[]){
        int a1,a2,a3;
        if(args.length<2)
        {
            System.out.println("Not Enough command line parameters is provideed");
        System.exit(0);

        }
        a1=Integer.parseInt(args[0]);
        a2=Integer.parseInt(args[1]);
        a3=a1+a2;
        System.out.println("Add"+a1+"with"+a2+"result in"+a3);
    }
}
/*D:\Program Files\Xinox Software\JCreatorV3\MyProjects\ccx9>java CommandLineParam
31  -9
Add31with-9result in22*/

沉默奔跑者 2008-03-11 09:44 发表评论

字符串1

沉默奔跑者 — Mon, 10 Mar 2008 04:25:00 GMT

import javax.swing.*;

public class StringTest2 {
    public static void main(String args[]){
        String s1,s2,s3,s4,output;

        s1=new String ("good morning");
        s2=new String ("John");
        s3=new String("How are you");
        s4=new String("   how are you");

        output="s1="+s1+"\ns2="+s2+"\ns3="+s3+"\ns4"+s4+"\n\n";

        if(s1.equals("hello"))
    output+="s1 equals\"hello\"\n";
        else
        output+="s1 dose not equal\"hello\"\n";

        if (s3.equalsIgnoreCase(s4))
        output+="s3 equals s4\n";
        else
        output+="s3 dose not equal s4\n";

        if(s3.regionMatches(0,s4,0,5))
        output+="First 5 characters of s3 and s4 match\n";
        else
        output+="First 5 characters of s3 and s4 do not match\n";

            if(s3.regionMatches(true,0,s4,0,5))
        output+="First 5 characters of s3 and s4 match\n";
        else
        output+="First 5 characters of s3 and s4 do not match\n";

        output+="s1与s4连接起来是："+s1.concat(s4)+"\n";

        output+="the first\"day\"of s4 is :"+s4.indexOf("you")+"\n";
        output+="the last\"day\"of s4 is :"+s4.lastIndexOf("we");

        JOptionPane.showMessageDialog(null,output,"Demonstring String Class CONstructors",JOptionPane.INFORMATION_MESSAGE);
        System.exit(0);
    }

}
//p133

沉默奔跑者 2008-03-10 12:25 发表评论