@@ -0,0 +1,276 @@
+public boolean equalIsNot(String str) %7B%0A  str += %22 %22;%0A  int notCount = 0, isCount = 0;%0A  for (int i=0; i%3Cstr.length()-2; i++) %7B%0A    if (str.substring(i, i+2).equals(%22is%22)) isCount++;%0A    if (str.substring(i, i+3).equals(%22not%22)) notCount++;%0A  %7D%0A  return isCount == notCount;%0A%7D%0A

Create equalIsNot.java