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| (define (make-queue)
(let ([front-ptr '()]
[rear-ptr '()])
(define (empty-queue?) (empty? front-ptr))
(define (insert-queue! new)
(if (empty-queue?)
(begin
(set-front-ptr! new)
(set-rear-ptr! new))
(begin
(set-cdr rear-ptr new)
(set-rear-ptr! new))))
(define (dispatch m)
(cond
[(equal? m 'insert-queue!) insert-queue!]))
dispatch)) |
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| public class Hello {
public static void main(String[] args) {
System.out.println("Hello World!");
}
} |
Posted by Jason under Uncategorized | No Comments »