Question

java在dat文件中读取数据并进行快速排序

要求从dat文件中读取数据并进行快速排序，java编写

Answer 1

import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

public class Reader {

public static String[] read(String fileName) throws IOException
{
File file=new File(fileName);
int num;
StringBuffer sb=new StringBuffer();
if(!file.exists())
{
file.createNewFile();
}
DataInputStream din=new DataInputStream(new FileInputStream(file));
byte[] data=new byte[1024];
while((num=din.read(data, 0, 1024))!=-1)
{
sb.append(new String(data,0,num));
}
return sb.toString().split(",");
}
public static void main(String args[])
{
try {
String[] array=read("D://test.dat");
for(String str:array)
{
System.out.println(str);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

}