Given the Maths Function definition below for a mathematical function a(n) you are required to write two Java methods – both methods will be in the same class.

 

An iterative method which calculates a(n) for any positive value of n. In this method you must use either a for or a while loop. You should call this method q1Iterative and it should have a definition as follows: public static int q1Iterative(int n)

A recursive method which calculates a(n) for any positive value of n. You should call this method q1Recursive. The definition of the method should be declared as follows: public static int q1Recursive(int n)

Both Java methods should only return the single value of a(n). They should not print any other values.

Input

    n, an integer value.

Sample Input 1

    1

Output

The method will print the value of a(n) for each method (which is a(1) in this case) on the same line separated by a space

Sample Output 1

    2 2

Sample Input 2

    5

Output

The method will print the value of a(n) for each method (which is a(5) in this case) on the same line seperated by a space

Sample Output 2

    -79 -79

a(n) = |a (1) | a(n) = 2, = 4a (n-1)-3n, n = 1 n >= 2