Balanced brackets: Difference between revisions

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@@ Line 2,857: / Line 2,857: @@
 =={{header|Elena}}==
-ELENA 4.x :
+ELENA 6.x :
 <syntaxhighlight lang="elena">import system'routines;
 import extensions;
 import extensions'text;
+// --- RandomBrackets ---
 randomBrackets(len)
 {
-    if (0 == len)
+   if (0 == len)
-    {
+   {
-        ^emptyString
+      ^emptyString
-    }
+   }
-    else
+   else
-    {
+   {
-        var brackets :=
+      var brackets :=
-            Array.allocate(len).populate:(i => $91)
+         Array.allocate(len).populate::(i => $91)
-            +
+         +
-            Array.allocate(len).populate:(i => $93);
+         Array.allocate(len).populate::(i => $93);
-        brackets := brackets.randomize(len * 2);
+      brackets := brackets.randomize(len * 2);
-        ^ brackets.summarize(new StringWriter()).toString()
+      ^ brackets.summarize(new StringWriter()).toString()
-    }
+   }
 }
 extension op
 {
-    get isBalanced()
+   get isBalanced()
-    {
+   {
-        var counter := new Integer(0);
+      var counter := new Integer(0);
-        self.seekEach:(ch => counter.append((ch==$91).iif(1,-1)) < 0);
+      self.seekEach::(ch => counter.append((ch==$91).iif(1,-1)) < 0);
-        ^ (0 == counter)
+      ^ (0 == counter)
-    }
+   }
 }
 public program()
 {
-    for(int len := 0, len < 9, len += 1)
+   for(int len := 0, len < 9, len += 1)
-    {
+   {
-        var str := randomBrackets(len);
+      var str := randomBrackets(len);
-        console.printLine("""",str,"""",str.isBalanced ? " is balanced" : " is not balanced")
+      console.printLine("""",str,"""",str.isBalanced ? " is balanced" : " is not balanced")
-    };
+   };
-    console.readChar()
+   console.readChar()
 }</syntaxhighlight>
 {{out}}