Data commit

Task/Best-shuffle/Elena/best-shuffle.elena

@@ -0,0 +1,48 @@
+import system'routines;
+import extensions;
+import extensions'text;
+
+extension op
+{
+    get Shuffled()
+    {
+        var original := self.toArray();
+        var shuffled := self.toArray();
+
+        for (int i := 0, i < original.Length, i += 1) {
+            for (int j := 0, j < original.Length, j += 1) {
+                if (i != j && original[i] != shuffled[j] && original[j] != shuffled[i])
+                {
+                    shuffled.exchange(i,j)
+                }
+            }
+        };
+
+        ^ shuffled.summarize(new StringWriter()).toString()
+    }
+
+    score(originalText)
+    {
+        var shuffled := self.toArray();
+        var original := originalText.toArray();
+        int score := 0;
+
+        for (int i := 0, i < original.Length, i += 1) {
+            if (original[i] == shuffled[i]) { score += 1 }
+        };
+
+        ^ score
+    }
+}
+
+public program()
+{
+    new string[]{"abracadabra", "seesaw", "grrrrrr", "pop", "up", "a"}.forEach:(s)
+    {
+        var shuffled_s := s.Shuffled;
+
+        console.printLine("The best shuffle of ",s," is ",shuffled_s,"(",shuffled_s.score(s),")")
+    };
+
+    console.readChar()
+}