Java Recursion

[HIDE]I understand that it will print out 3 *'s but I don't understand how it print 3 +'s.
After when n=0, should it just print out one +? I'm confused here. Thanks.

Code:

[COLOR="Magenta"]public class Stars
{
public static void main(String args[])
{
Stars.starsAndPlusses(3);
}

public static void starsAndPlusses(int n)
{System.out.print(n);
	if(n==0)
	{
		System.out.print("out");
	}
	else
	{
		System.out.print("one");
		System.out.print('*');
		Stars.starsAndPlusses(n - 1);
		System.out.print("two");
		System.out.print('+');
	}
}
}[/COLOR]

The output is:
3one*2one*1one*0outtwo+two+two+[/HIDE]

 

hii have you solved the problem yet?

what kind of printout do you want? (cuz i dont really understand the problem)

 

yepp after printing those 3* it goes back to the "previous method", cuz it hasnt finished.

hope you understand my drawing lols

 

we just had recursion last week haha
was kinda confusing, but now i like it a lot!!

 

nice drawings lol

 

Lol there's nothing hard about writing recursion. Just visualize it.

 

and understand the concept of calling a function/procedure within itself
=)

 

^ two comments

1) while(true) means continue running. Don't think it applies here.
2) I don't understand your temp stuff. It serves no purpose... You're storying the results of Z,h5(a,b) into temp, and storing temp into a... And in the end, a and b don't do anything...

The opposite to recursion is iteration.

This means you need to loop, and you need to have what's called a "sentinel". When you loop, if your condition meets the condition of the sentinel condition, then you break out of the loop. Else, you continue the loop.

Read the pseudocode (iterative section) of this wiki http://en.wikipedia.org/wiki/Recursion_(computer_science)#Factorial