public class TailRecursion
{
 


public String drawLine1(int n){
if(n == 0)
    return ("------");
else {
    String s = "";
         for (int i=0; i <= n ; i++){
            s +=  "*";
           }
     s += "\n"; //add a new line

     return s + drawLine1(n-1) ;
        }

}           
           
           
           
public void drawLine2(int n){
if(n == 0)
    System.out.println("------");
else {
         for (int i=0; i <= n ; i++){
           System.out.print("*");
           }
      System.out.println();
      drawLine2(n-1);
      }
}

       public void drawLine3(int n){
if(n == 0)
    System.out.println("------");
else {
   drawLine3(n-1);
         for (int i=0; i <= n ; i++){
           System.out.print("*");
           }
      System.out.println();
   
      }
}
    


     public TailRecursion()
    {
        System.out.println("drawLine1 : ");
     String s=   drawLine1(5);
     System.out.println(s);  
     System.out.println("drawLine2: "); 
       drawLine2(5);
   
        System.out.println("drawLine3: "); 
        drawLine3(5);
}

  
}