Create a java class with main() function to implement and test the \'myRecursive

ID: 3820426 • Letter: C

Question

Create a java class with main() function to implement and test the 'myRecursiveFunction()', factorial(), and exp() functions. Due today 4/18/2017 Create a java class with main() function to implement and test a recursive summation function(). Due today 4/25/2017 eL, CS231, assignments, HW21: attach the following: A pdf files with screen captures showing the compilation and execution results. PDF File names: CS231_lastname-firstname_HW21.pdf A zipped directory of all the java source files. File names: CS231_lastnamc-firstname_HW21.zip

Explanation / Answer

ans 1:

class JavaTest {

static int n1 = 0, n2 = 1, n3 = 0;

   public static void main(String[] args) {
       // myRecursiveFunction to calculate the fibonicci series
       int count = 9;
       System.out.print("Fibonicci series : " + n1 + " " + n2);// printing 1st and 2nd numbers of series
       myRecursiveFunction(count - 2);// n-2 because 2 numbers are already
                                       // printed

       // factorial to calculate the factorial of the given number
       int number = 5;// number to calculate factorial
       int fact = factorial(number);
       System.out.println(" Factorial of " + number + " is: " + fact);

       // calculating the exp using the Math utility functions
       double x = 5;
       double y = 0.5;
       // print e raised at x and y
       System.out.println("Math.exp(" + x + ")=" + Math.exp(x));
       System.out.println("Math.exp(" + y + ")=" + Math.exp(y));
   }

   public static void myRecursiveFunction(int count) {
       if (count > 0) {
           n3 = n1 + n2;
           n1 = n2;
           n2 = n3;
           System.out.print(" " + n3);
           myRecursiveFunction(count - 1);
       }
   }

   public static int factorial(int number) {
       int fact = 1;
       for (int i = 1; i <= number; i++) {
           fact = fact * i;
       }
       return fact;
   }
}

output:

Fibonicci series : 0 1 1 2 3 5 8 13 21
Factorial of 5 is: 120
Math.exp(5.0)=148.4131591025766
Math.exp(0.5)=1.6487212707001282

--------------------------------------------------------------

ans2:

class FactorialTest {

   public static void main(String args[]) {
       int i, fact = 1;
       int number = 5;// number to calculate factorial
       fact = factorial(number);
       System.out.println("Factorial of " + number + " is: " + fact);
   }

   // calculate factorial of the given number using recursion
   public static int factorial(int n) {
       if (n == 0)
           return 1;
       else
           return (n * factorial(n - 1));
   }

}

output:

Factorial of 5 is: 120

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Create a java class with main() function to implement and test the \'myRecursive

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