new tasks

Task/Balanced_brackets/JavaScript/balanced_brackets-2.js

@@ -0,0 +1,29 @@
+function checkBalance(i) {
+    while (i.length % 2 == 0) {
+        j = i.replace('{}','');
+        if (j == i)
+            break;
+                i = j;
+    }
+    return (i?false:true);
+}
+
+var g = 10;
+while (g--) {
+    var N = 10 - Math.floor(g/2), n=N, o='';
+    while (n || N) {
+        if (N == 0 || n == 0) {
+            o+=Array(++N).join('}') + Array(++n).join('{');
+            break;
+        }
+        if (Math.round(Math.random()) == 1) {
+            o+='}';
+            N--;
+        }
+        else {
+            o+='{';
+            n--;
+        }
+    }
+    alert(o+": "+checkBalance(o));
+}