全进制转换

package com.acm;
import java.util.*;

class solution
{
  private String str="0123456789ABCDEF";
  private int m,n;
  private Scanner iner=new Scanner(System.in);
  private StringBuilder des=new StringBuilder();
  
  public void Tran()
  {
      while(iner.hasNextLine())
      {
          m=iner.nextInt();
          n=iner.nextInt();
          if(m<0)
          {
              System.out.print('-');
          }
          m=Math.abs(m);
          while(m!=0)
          {
              des.insert(0,str.charAt(m%n));
              m=m/n;
          }
          System.out.println(des);
          des.delete(0, des.length());
      }
  }
  
}

public class Main {
    public static void main(String[] args) {
        solution space = new solution();
        space.Tran();
    }
}