*ループ1 [#i29c71f8]
 (for-each print
           (map
             (lambda (_) "Hello World!")
             (iota 5)))

*ループ2 [#s4350f12]
 (define (foo n)
   (for-each print
             (map
               (lambda (i)
                 (format #f "~a ~d" "Hello World!" (+ i 1)))
               (iota n))))
 (define (main args)
   (foo (string->number (list-ref args 1))))

*FizzBuzz [#l501edf8]
 (print
   (string-join
     (map
       (lambda (x)
         (cond
           ((zero? (modulo x 15)) "FizzBuzz")
           ((zero? (modulo x  5)) "Buzz")
           ((zero? (modulo x  3)) "Fizz")
           (else (format #f "~d" x))))
       (iota 100 1))))

*素数判定 [#jd32f6c4]
 (define (check-prime n d)
   (if (> d (sqrt n))
     #t
     (if (zero? (modulo n d))
       #f
       (check-prime n (+ d 1)))))
 (define (is-prime? n)
   (if (< n 2)
     #f
     (check-prime n 2)))
 (define prime?
   (lambda (n)
     (if (is-prime? n)
       (print (format #f "~dは素数です。" n))
       (print (format #f "~dは素数ではありません。" n)))))
 (prime? 1)
 (prime? 2)
 (prime? 3)
 (prime? 4)
 (prime? 5)
 (prime? 997)
 (prime? 998)
 (prime? 15485863)
 (prime? 122949823)
 (prime? 674506081)
 (prime? 982451653)

*うるう年判定 [#l746f1d2]
 (define (is-leap-year? n)
   (cond
     ((zero? (modulo n 400)) #t)
     ((zero? (modulo n 100)) #f)
     ((zero? (modulo n   4)) #t)
     (else                   #f)))
 (define (leap-year? n)
   (if (is-leap-year? n)
     (print (format #f "~d年はうるう年です。" n))
     (print (format #f "~d年はうるう年ではありません。" n))))
 (leap-year? 1992)
 (leap-year? 2000)
 (leap-year? 2001)

*累乗1 [#ybfcac36]
 (define pow
   (lambda (a n)
     (if (zero? n)
       1
       (* a (pow a (- n 1))))))
 (print (pow 2 10))

*フィボナッチ数列1 [#l1f0f136]
 (define fib
   (lambda (n)
     (if (< n 2)
       1
       (+ (fib (- n 1)) (fib (- n 2))))))
 (for-each print
           (map
             (lambda (n) (fib n))
             (iota 10)))

*フィボナッチ数列2 [#q95f0a17]
 (define fib-kernel
   (lambda (current next remaining)
     (if (zero? remaining)
       current
       (fib-kernel next (+ current next) (- remaining 1)))))
 (define fib
   (lambda (n)
     (fib-kernel 1 1 n)))
 (for-each print
           (map
             (lambda (n) (fib n))
             (iota 100)))


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