Java Tutorial For Beginners 30 - Recursion in java

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[preciouspearl]

these totorials are soo much helpful sir, thank you soo much .

[sreekanths]

Explained very well with a good example. What other operations apart from Factorials can Recursion be used for?

[rasik]

Here is my own think..on... how to count factorial of getting value from user

package lesson1;

import java.util.Scanner;

public class MyClass {

public static int factorial(int n)
{

if(n<=1)
return 1;
else

return(n*factorial(n-1));

}

public static void main(String[] args)
{
Scanner s = new Scanner(System.in);
System.out.println("enter n:");
int z= s.nextInt();



}
}

[decimater]

Can someone explain to me why this code loops? For some reason I can't wrap my mind around it.
What I mean is why does it keep resolving for factorial after one sequence? So, if you define N as 5, why doesn't the code just "think" "5 !<= 1, return (5 * (5-1)" and then output 20?
I think I'm just confused as to what integer factorial is actually doing, but yeah...this is confusing the hell out of me.

[chandrasekhar]

sir how did we get the output without calling the method . first of all we need to create an object to call a method . please clarify my doubt sir

[RahulPrashanthG]

can we use capital letters as variables??

[riomanty]

why would you return 1 and not n? I dont understand how the program wouldnt return 1 once one is passed into the recursive call

[dharapopat]

Which type of comments used in this program?

[dumacele]

excellent, , , but the first condition should br if(N==1 || N==0), , , , since -4! = -24, -3!=-6 and so factorial of a negative number is just the negative factorial of that

[MrThakre]

why do we need to define methods as static here?
not working with normal method defination

[NirmalKumarnils]

Why the factorial of 50 is returning 0 ?

[sachinnegi]

it wasn't much clear for a beginner

[vishalghai]

Showing wrong results for factorial of 30 even using with long