十進制轉其他進制--優化方案

package cn.imust.day01;

class  TestTransfer
{
	public static void main(String[] args) 
	{
		
		toBin(6);
		toOctonary(60);
		toHex(60);
	}
	public static void toBin(int num){
		transfer(num,1,1);
	}
	public static void toHex(int num){
		transfer(num,15,4);
	}
	public static void toOctonary(int num){
		transfer(num,7,3);
	}
	public static void transfer(int num,int base,int offSet){
		if(num==0){
					System.out.println(0);
					return;
		}
		//the transfer table ,which is appropriate to all the existing 進制
		char[] chs={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
		//the storage 
		char[] arr =new char[32];
		//StringBuffer sb=new StringBuffer();
		int pos=arr.length-1;//

		while (num !=0){
			int temp =num & base ;
			arr[pos--]=chs[temp];
			num=num>>>offSet; 
		}
		for (int x=pos-1;x<arr.length ;x++ )
		{
			System.out.print(arr[x]);
		}
	}
}