@@ -0,0 +1,418 @@
+import java.util.*;%0Aclass kdigit%0A%7B%0A    public static void main(String args%5B%5D)%0A    %7B%0A        Scanner s=new Scanner(System.in);%0A        String n=s.nextLine();%0A        int n1=s.nextInt();%0A        char b%5B%5D=n.toCharArray();%0A        String s1=%22%22; %0A        for(int i=0;i%3Cn.length();i++)%0A        %7B%0A            if(i%3Cn1)%0A            s1+=%22%22;%0A            else%0A            s1+=b%5Bi%5D;%0A        %7D%0A        System.out.print(s1);%0A    %7D%0A%7D%0A

Create kdigit.java