Question

Java, Rewrite the following iterative method as a recursive method that computes the same thing. Note: your recursive method will require an extra parameter.

public int iterative1(int x)
{
int count = 0, factor = 2;
while (factor < x)
{
if (x % factor == 0) count++;
factor++;
}
return count;
}

Answer 1

To rewrite the iterative method as a recursive method in Java, you can create a helper method that takes additional parameters for the count and factor.

Step-by-step explanation:

To rewrite the iterative method as a recursive method in Java, you can create a helper method that takes additional parameters for the count and factor. Here's an example:

public int recursive1Helper(int x, int count, int factor) {
if (factor >= x) {
return count;
} else {
if (x % factor == 0) {
count++;
}
return recursive1Helper(x, count, factor + 1);
}
}

public int recursive1(int x) {
return recursive1Helper(x, 0, 2);
}

In the example above, a helper method called recursive1Helper is used to perform the recursive calculation. It takes the same parameters as the original iterative method, but also includes count and factor as additional parameters. The helper method recursively calls itself until the factor is greater than or equal to x. If the condition is met, it returns the count value.