arrdemo.java

ＪＡＶＡ编写的一些源代码

import java.applet.*;
import java.awt.*;
public class ArrDemo extends Applet
{	public void paint(Graphics g)
	{	int arr1[][]=new int[3][4];
		int arr2[][]=new int[3][];
		int arr3[][]={{0,1,2},{3,4,5},{6,7,8}};
		int i,j,k=0;
		for(i=0;i<3;i++)
			for(j=0;j<4;j++)
				arr1[i][k]=k++;
		for(i=0;i<3;i++)
			arr2[i]=new int[i+3];
		for(i=0;i<3;i++)
			for(j=0;j<arr2[i].length;j++)
				arr2[i][j]=k++;
		g.drawString("arr1:",20,20);
		for(i=0;i<3;i++)
			for(j=0;j<4;j++)
				g.drawString(" "+arr1[i][j],20+20*j,40+20*i);
		g.drawString("arr2:",115,20);
		for(i=0;i<3;i++)
			for(j=0;j<arr2[i].length;j++)
				g.drawString(" "+arr2[i][j],115+20*j,40+20*i);
		g.drawString("arr3:",230,20);
		for(i=0;i<3;i++)
			for(j=0;j<3;j++)
				g.drawString(" "+arr3[i][j],230+20*j,40+20*i);
	}
}