Essay CSIS 312 Assignment 6 Factorial Calculator

Essay CSIS 312 Assignment 6 Factorial Calculator

Essay CSIS 312 Assignment 6 Factorial Calculator
Essay CSIS 312 Assignment 6 Factorial Calculator

CSIS 312 Assignment 6 Factorial Calculator

Assignment 6-1
It is interesting to watch recursion “in action.” Modify the factorial method in Fig. 18.3 to print its local variable and recursive-call parameter.

For each recursive call, display the outputs on a separate line and add a level of indentation. Do your utmost to make the outputs clear, interesting, and meaningful. Your goal here is to design and implement an output format that makes it easier to understand recursion.

0! = 1
1! = 1
2! = 2
3! = 6
4! = 24
5! = 120
6! = 720
7! = 5040
8! = 40320
9! = 362880
10! = 3628800
11! = 39916800
12! = 479001600
13! = 6227020800
14! = 87178291200
15! = 1307674368000
16! = 20922789888000
17! = 355687428096000
18! = 6402373705728000
19! = 121645100408832000
20! = 2432902008176640000

Assignment 6-2
Write a recursive method printArray() that displays all the elements in an array of integers, separated by spaces. The array must be 100 elements in size and filled using a for loop and a random number generator. The pseudo-code for this is as follows:

//Instantiate an integer array of size 100//fill the arrayFor (int i=0; i<array.length; i++)Array[i] = random number between 1 and100 inclusiveprintArray(integer array);

For both assignments make sure that your screen shots show your program running and that your runtime display shows that your program does all that is required of it. You only get credit for what you demonstrate.

Submit this assignment by 11:59 p.m. (ET) on Monday of Module/Week 6.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22// Fig. 18.3: FactorialCalculator.java// Recursive factorial method.publicclassFactorialCalculator{   // recursive method factorial (assumes its parameter is >= 0   publicstaticlong factorial(long number)   {      if(number <= 1) // test for base case         return1; // base cases: 0! = 1 and 1! = 1      else// recursion step         returnnumber * factorial(number - 1);   }    // output factorials for values 0-21   publicstaticvoid main(String[] args)   {      // calculate the factorials of 0 through 21      for(int counter = 0; counter <= 21; counter++)         System.out.printf("%d! = %d%n", counter, factorial(counter));   }} // end class FactorialCalculator

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