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Java Recursion


Java Tutorial » Java Recursion Method

A Java method that calls itself is known as a recursive method. Recursion may be it is a little difficult to understand. The best way to figure out how it works is to experiment with it.


Syntax:
returntype methodname(){
//code to be executed
methodname();//calling same method
}
Makes the code compact but complex to understand.


Factorial of a Number Using Recursion example


We have a method named factorial(). The factorial() is called from the main() method. with the number variable passed as an argument.

Example
class Factorial {

static int factorial( int x ) {
if (x != 0) // termination condition
return x * factorial(x-1); // recursive call
else
return 1;
}

public static void main(String[] args) {
int number = 5, result;
result = factorial(number);
System.out.println(number + " factorial = " + result);
}
}
Output:
4 factorial = 120


java recursion example, exercices, stack, factorial, not working, out of memory, missing return statement, practice problems, return value

java recursion example, exercices, stack, factorial, not working, out of memory, missing return statement, practice problems, return value
Java Recursion - java

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