public class aasa {
public static void main(String[] args) {
String a[] = split("aaabbbcccdddffff", 3);
for (int i = 0; i < a.length; i++) {
System.out.println(a[i]);
}
}
public static String[] split(String str ,int num){
int a = 0;
int num1 = str.length()%num==0?str.length()/num:str.length()/num+1;
String s[] = new String[num1];
for (int i = 0; i <str.length() ; i += num) {
if(num+i<str.length()){
s[a] = str.substring(i,num+i);
}else {
s[a] = str.substring(i);
}
a++;
System.out.println(a);
}
return s;
}
}