CS150 Notes 11 (16 September 2005)

Upcoming Assignments

• Monday, 19 September: PS3

(define (sublist lst start end)
  (if (= start 0)
      (if (= end 0) null
          (cons (car lst) (sublist (cdr lst) start (- end 1))))
      (sublist (cdr lst) (- start 1) (- end 1))))

(define (first-half lst) 
  (sublist lst 0  (floor (/ (+ 1 (length lst)) 2))))

(define (second-half lst)
  (sublist lst (floor (/ (+ 1 (length lst)) 2)) (length lst)))

(define (insertsorth cf lst)
  (if (null? lst) null 
      (insertelh cf (car lst) (insertsorth cf (cdr lst)))))

(define (insertelh cf el lst)
  (if (null? lst) 
      (list el)
      (let ((fh (first-half lst))
	    (sh (second-half lst)))







         )))

• Great Books of the Western World (How many were written in the last 15 years? When was the golden age of literature?)
• Steve Jobs: Personal computer enters 'third golden age'
• Golden Age of Jazz
• Two Golden Ages Masterpieces of Dutch and Danish Painting
• Grade inflation articles (relate them to Tyson's essay): Grade Inflation at Virginia Universities: Does A Stand for Average?, Virginia-Pilot, Sunday, 9 February 2003; Cavalier Daily, Making the Grade, 19 March 2003 (the Cavalier Daily also published a letter on this subject).
• Students Receive Fewer A's, and Princeton Calls It Progress, New York Times, 20 September 2005.