langs a-z

Task/Knuth-shuffle/NetRexx/knuth-shuffle.netrexx

@@ -0,0 +1,49 @@
+/* NetRexx */
+options replace format comments java crossref savelog symbols nobinary
+
+import java.util.List
+
+cards = [String -
+    'hA', 'h2', 'h3', 'h4', 'h5', 'h6', 'h7', 'h8', 'h9', 'h10', 'hJ', 'hQ', 'hK' -
+  , 'cA', 'c2', 'c3', 'c4', 'c5', 'c6', 'c7', 'c8', 'c9', 'c10', 'cJ', 'cQ', 'cK' -
+  , 'dA', 'd2', 'd3', 'd4', 'd5', 'd6', 'd7', 'd8', 'd9', 'd10', 'dJ', 'dQ', 'dK' -
+  , 'sA', 's2', 's3', 's4', 's5', 's6', 's7', 's8', 's9', 's10', 'sJ', 'sQ', 'sK' -
+]
+cardsLen = cards.length
+deck = ArrayList(cardsLen)
+loop c_ = 0 to cardsLen - 1
+  deck.add(String(cards[c_]))
+  end c_
+
+showHand(deck)
+deck = ArrayList shuffle(deck)
+showHand(deck)
+
+return
+
+method shuffle(deck = List) public static binary returns List
+
+  rn = Random()
+  dl = deck.size
+
+  loop i_ = dl - 1 to 1 by -1
+    j_ = rn.nextInt(i_)
+    __ = deck.get(i_)
+    deck.set(i_, deck.get(j_))
+    deck.set(j_, __)
+    end i_
+
+  return deck
+
+method showHand(deck = ArrayList) public static binary
+
+  dl = deck.size
+  hl = dl % 4
+  loop c_ = 0 to dl - 1 by hl
+    d_ = c_ + hl
+    if d_ >= dl then d_ = dl
+    say ArrayList(deck.subList(c_, d_)).toString
+    end c_
+    say
+
+  return