Poj Solution 1520

http://poj.org/problem?id=1520

//* @author: 82638882@163.com
import java.util.*;
public class Main
{
 public static void main(String[] args)
 {
  Scanner in=new Scanner(System.in);
  while(true)
   {
    String s=in.nextLine();
    if(s.equals("."))break;
    s=s.substring(0,s.length()-1);
    String[] arr=s.split(", ");
    int l=arr.length;
    int[] kk=new int[l];
    ArrayList< Integer> arrI=new ArrayList< Integer>();
    TreeMap< String,String> arrS=new TreeMap< String,String>();
    for(int i=0;i< l;i++)
    {
      if(isNum(arr[i])){
        arrI.add(Integer.parseInt(arr[i]));
        kk[i]=1;
       }
       else arrS.put(arr[i].toLowerCase(), arr[i]);
    }
    Collections.sort(arrI);
    int w=0,q=0;
    for(int i=0;i< l;i++)
    {
     if(kk[i]==1) System.out.print(arrI.get(w++));
     else {
      System.out.print(arrS.get(arrS.firstKey()));
      arrS.remove(arrS.firstKey());
     }
      if(i!=l-1) System.out.print(", ");
    }
    System.out.println(".");
   }
 }

 public static boolean isNum(String str)
 {
  char w=str.charAt(0);
  if(w!='-'&&(w>57||w<48)) return false;
  for(int i=1;i< str.length();i++)
  {
    char c=str.charAt(i);
    if(c>57||c< 48) return false;
  }
  return true;
 }
}