Hi Aysenur
Here are some hints:
- It's simpler to work with symbols than strings in this sort of
problem. E.g.
(define ops '(↔ → ∧ ⊕ ∨ ¬))
(define propositions '(P Q R X Y Z))
- It helps to start by solving a simpler problem. Can you write a
function (random-simple-expression) to
(define( app L1 L2)
(if(empty? L1) L2
(cons (car L1) (app(cdr L1)L2
(app ((list "↔" "→" "∧" "⊕" "∨" "¬")) (list "P" "Q" "R" "S" "U" "X" "Y" "Z"))
(define L (list "↔" "→" "∧" "⊕" "∨" "¬"))
(define ( f L n)
(if (= n 0) "p"
(string-append "p" (car L) (f(cdr L) (- n 1)
(f L
2 matches
Mail list logo
