Exercise 05 - Sets

Creating a set

A set in clojure means a Mathmetical set. It will remove and recurring numbers. You can create a set using the following syntax:

• #(1 2 3)
• (set '(1 2 3))

Working with Sets

You can count a set

(count #{1 2 3})
  ;;=> 3

A set is a Mathematical Set

(set '(1 1 2 2 3 3 4 4 5 5))
  ;;=> #{1 2 3 4 5}

Finding the Union of 2 Sets

(set/union #{1 2 3 4} #{2 3 5})
  ;;=> #{1 2 3 4 5}

Finding the Intersection of 2 Sets

(set/intersection #{1 2 3 4} #{2 3 5})
   ;;=> #{2 3}

Finding the Difference of 2 Sets

(set/difference #{1 2 3 4 5} #{2 3 5})
  ;;=> #{1 4}