new files

Task/Anagrams/Racket/anagrams-1.rkt

@@ -0,0 +1,21 @@
+#lang racket
+
+(require net/url)
+
+(define (get-lines url-string)
+  (define port (get-pure-port (string->url url-string)))
+  (for/list ([l (in-lines port)]) l))
+
+(define (hash-words words)
+  (for/fold ([ws-hash (hash)]) ([w words])
+    (hash-update ws-hash
+                 (list->string (sort (string->list w) < #:key (λ (c) (char->integer c))))
+                 (λ (ws) (cons w ws))
+                 (λ () '()))))
+
+(define (get-maxes h)
+  (define max-ws (apply max (map length (hash-values h))))
+  (define max-keys (filter (λ (k) (= (length (hash-ref h k)) max-ws)) (hash-keys h)))
+  (map (λ (k) (hash-ref h k)) max-keys))
+
+(get-maxes (hash-words (get-lines "http://www.puzzlers.org/pub/wordlists/unixdict.txt")))