整数转换二进制并带有逗号隔开

[java]代码库

import java.util.Arrays; 
import java.util.Scanner; 
 
public class binary{ 
    public static void main(String[]args){ 
        
    	Scanner in = new Scanner(System.in); 
        
    	System.out.print("确认输入的数字个数:q ="); 
        int q = in.nextInt(); 
        int arr[] = new int[q]; 
        for(int w = 0;w < q;w++){ 
            System.out.print("arr["+(w+1)+"]="); 
            arr[w] = in.nextInt(); 
        } 
        for(int w = 0;w < q;w++){  
  	       int i=0;
  	       int r=0;
  	       int n=arr[w];
  	       int[] a =new int[16];
  	       do{            
  	          if(n%2==1){
  	                 r=1;
  	       }
  	          else {
  	        	  r=0;
  	       }
  	          a[i]=r;
  	          n=n/2;
  	          i++;
  	       }
  		   while(n>0);
  		        if ( i<=a.length) {
  		        	for (int j = 0; j < a.length-i; j++) {
  		        		System.out.print("0"+",");
  		        	}
  			    }
  	         	for (int j = i-1; j>=0; j--) {
  	                System.out.print(a[j]+",");
  				}   
        } 
    } 
} 

[代码运行效果截图]