1 files changed, 24 insertions, 0 deletions
diff --git a/coding-exercises/2/38.rkt b/coding-exercises/2/38.rkt
new file mode 100644
index 0000000..456e283
--- /dev/null
+++ b/coding-exercises/2/38.rkt
@@ -0,0 +1,24 @@
+#lang racket
+(require "../../shared/lists.rkt")
+
+(define (fold-right op initial sequence)
+  (accumulate op initial sequence))
+
+(define (fold-left op initial sequence)
+  (define (iter result rest)
+    (if (null? rest)
+      result
+      (iter (op result (car rest))
+            (cdr rest))))
+  (iter initial sequence))
+
+((lambda ()
+   (newline)
+   (display (fold-right / 1 (list 1 2 3)))
+   (newline)
+   (display (fold-left / 1 (list 1 2 3)))
+   (newline)
+   (display (fold-right list '() (list 1 2 3)))
+   (newline)
+   (display (fold-left list '() (list 1 2 3)))))
+