Towers of Hanoi: Difference between revisions

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@@ Line 1,812: / Line 1,812: @@
 =={{header|JavaScript}}==
 <lang javascript>function move(n, a, b, c) {
   if (n > 0) {
@@ Line 1,825: / Line 1,826: @@
 <lang JavaScript>(function () {
-  // hanoi :: n -> s -> s -> s -> [[s, s]]
+    // hanoi :: Int -> String -> String -> String -> [[String, String]]
-  function hanoi(n, a, b, c) {
+    function hanoi(n, a, b, c) {
-    return n ? hanoi(n - 1, a, c, b).concat(
+        return n ? hanoi(n - 1, a, c, b)
-      [[a, b]]
+            .concat(
-    ).concat(hanoi(n - 1, c, b, a)) : [];
+                [
+                    [a, b]
-  }
+                ]
+            )
-  return hanoi(3, 'left', 'right', 'mid')
+            .concat(hanoi(n - 1, c, b, a)) : [];
-  .map(function (d) {
+    }
-    return d[0] + ' -> ' + d[1];
-  });
+    return hanoi(3, 'left', 'right', 'mid')
+        .map(function (d) {
+            return d[0] + ' -> ' + d[1];
+        });
 })();</lang>