HDU1106

为了给学弟学妹讲课，我又水了一题……

  1: import java.util.*;

  2: import java.io.*;

  3:

  4: public class HDU1106

  5: {

  6:     public static void main(String[] args)

  7:     {

  8:         BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

  9:         String s;

 10:         while((s=br.readLine())!=null)

 11:         {

 12:       //去掉字符串中空格，防止useDelimiter连续读取整数出错

 13:             Scanner sc = new Scanner(s.trim());

 14:             int k = 0;

 15:             int a[];

 16:             a=new int[1001];

 17:       //匹配正则表达式，5+表示匹配一个或多个5，不会产生空字符

 18:             sc.useDelimiter("5+");

 19:             while(sc.hasNextInt())

 20:                 a[k++]=sc.nextInt();

 21:             sc.close();

 22:             Arrays.sort(a,0,k);

 23:             for(int i=0;i<k;i++)

 24:             {

 25:                 if(i==k-1)

 26:                     System.out.println(a[i]);

 27:                 else

 28:                     System.out.print(a[i]+" ");

 29:             }

 30:         }

 31:     }

 32: }

while(sc.hasNext()) {
    if(sc.hasNextInt()) {
        //do sth
    }else {
    //直接跳过
        next();
    }
}