Practice with Scheme

Dr. Scheme can be downloaded for FREE at http://plt-scheme.org/

1. (1 point) Write a function in Scheme to return 1, 0, +1 depending on two parameters a and b:

a < b return 1

a > b return +1

a = b return 0

2. (3 points) Write a recursive function in Scheme, called get-element which takes two parameters, an index and a list. The function returns the element at the given index position in the list or #f if element is not contained. Indices start at 1 and go to the length of the list.

3. (1 point) Question: How would you change the function so it returns the whole list if the element is not contained?