Clean up APL code and sprinkle an example in comments
Clean up APL code and sprinkle an example in comments

crista/exercises-in-programming-style,crista/exercises-in-programming-style,kranthikumar/exercises-in-programming-style,crista/exercises-in-programming-style,kranthikumar/exercises-in-programming-style,kranthikumar/exercises-in-programming-style,kranthikumar/exercises-in-programming-style,crista/exercises-in-programming-style,crista/exercises-in-programming-style,kranthikumar/exercises-in-programming-style