| 
 
| public class Student { public static void main(String[]args){
 toer(60);
 }
 public static void toer(int sum){
 jinzhi(sum,1,1);
 }
 public static void toba(int sum){
 jinzhi(sum,7,3);
 }
 public static void toliu(int sum){
 jinzhi(sum,15,4);
 }
 public static void jinzhi(int sum,int base,int you){
 char[] chs={'0','1','2','3','4',
 '5','6','7','8','9','a','b','c','d'
 ,'e','f'};
 char[] arr=new char[32];
 int pos=arr.length;
 while(sum!=0){
 int temp=sum&base;
 arr[--pos]=chs[temp];
 sum=sum>>>you;
 
 }
 for(int i=pos;i<arr.length;i++){
 System.out.print(arr[i]);
 }
 
 
 }
 
 }
 
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