Question

public class Main
{
    public static void pyr(int n)
    {      
        for(int i=1;i<=n;i++)
        {
             for(int j = 1;j<=i;j++)
             {  
                  System.out.print("*");
             }
             System.out.println();
        }
    }
 }

Can such a code for a pyramid like shape of asteriks be implemented recursively ? if so especially the 2 loops as the first one is for leveling while the second is used to fill each level.

Answer 1

The answer is yes – basically everything iterative can be done recursively, sometimes it is much easier, but more time consuming.

For your question – this does the trick:

public static void main(String[] args) 
{
    printPyramid(7);
}

public static void printPyramid(int lines)
{
    if (lines > 1)
    {
        printPyramid(lines-1);
    }
    printLine(lines);
    System.out.println("");
}

public static void printLine(int level)
{
    if (level > 0)
    {
        System.out.print("*");
        printLine(level-1);
    }
}