Implement findValidPasswords method

src/main/java/BonusExercises.java

@@ -62,8 +62,18 @@ public class BonusExercises {
         - has no white-space in it
      */
     public int findValidPasswords(String string) {
-        // todo
+        String regex = "^(?=.*[a-z])(?=.*[A-Z])(?=.*\\d)(?=.*[!@#$%^&*]).{8,}$";
-        return -1;
+        Pattern pattern = Pattern.compile(regex);
+
+        String[] parts = string.split("\\s+");
+        int counter = 0;
+        for(String part : parts){
+            Matcher matcher = pattern.matcher(part);
+            if(matcher.matches()){
+                counter++;
+            }
+        }
+        return counter;
     }
 
     /*