Thank you for any help with following programming questions! 1) This function ca

Question

Thank you for any help with following programming questions!

1) This function calculates what?

long x(int n)
{
    if (n == 1) return 1;
    else return n*x(n-1);
}

2) What list operation does the operation method below define?

    public void operation(int location, int item)
    {
        if (location < 0 || location >= length)
        {
            System.out.println("Error: invalid location");
        } else
        {
            list[location] = item;
        }
    }

3) Consider the recursive function below: What does this code do?

int RecFunction(int n)
{
    if (n==0) return 0;
    else return RecFunction(n-1) + n;
}

4) Consider the following code that uses the class java.util.LinkedList.

LinkedList constants = new LinkedList();

Which of the following statements correctly inserts PI in the list constants?

Explanation / Answer

Question 1:

Answer: This function return the factorial of the given number positive number;

For example:

x(5) return 120

x(4) return 24

Question 2:

Answer: It place the given item in the given location

if (location < 0 || location >= length) { /// check if location is not negitive and must not be greater then length
System.out.println("Error: invalid location");
} else {
list[location] = item; // place the item in given index location
}

Question 3:

Answer: It return the sum of given number

example:

RecFunction(3) = 3 + 2 + 1 = 6

RecFunction(6) = 6 + 5 + 4 + 3 + 2 + 1 = 21

Question 4:

Answer:

constants.add(Math.PI);

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.