In this challenge you will write a recursive function that returns the value of

Question

In this challenge you will write a recursive function that returns the value of n!.

Start by writing the base case:
if n is zero, then factorial should just return the value 1.

Once implemented, uncomment the Program.assertEqual() for factorial(0) at the bottom to verify that the test assertion passes.

var factorial = function(n) {
   // base case:
  
   // recursive case:
};

println("The value of 0! is " + factorial(0) + ".");
println("The value of 5! is " + factorial(5) + ".");

//Program.assertEqual(factorial(0), 1);
//Program.assertEqual(factorial(5), 120);

Explanation / Answer

var factorial = function(n) {

// base case
if(n==0)
return 1;
else
return n*factorial(n-1);
};

println("The value of 0! is " + factorial(0) + ".");
println("The value of 5! is " + factorial(5) + ".");

Program.assertEqual(factorial(0), 1);
Program.assertEqual(factorial(5), 120);

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