import java.util.*;

public class UsingStringBuilder{
    public static Random rand = new Random(47);
    public String toString(){
        StringBuilder result = new StringBuilder("[");
        for(int i=0;i<25;i++){
            result.append(rand.nextInt(100));
            result.append(", ");
        }
        result.delete(result.length()-2, result.length());
        result.append("]");
        return result.toString();
    }
    public static void main(String[] args){
        UsingStringBuilder usb = new UsingStringBuilder();
        System.out.println(usb);
    }
}