diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index e1485c3..9837209 100644
--- a/src/main/java/com/booleanuk/core/Exercise.java
+++ b/src/main/java/com/booleanuk/core/Exercise.java
@@ -48,7 +48,9 @@ public HashMap<String, String> createPerson() {
          in the createPerson method
      */
 
-
+    public String getValue(String key) {
+        return createPerson().get(key);
+    }
 
     /*
         TODO: 2. Create a method named hasKey that accepts two parameters:
@@ -57,7 +59,12 @@ public HashMap<String, String> createPerson() {
          The method must return a boolean that represents whether the string provided exists as a key
          in the provided HashMap
      */
-
+    public boolean hasKey(HashMap<String, String> hm, String str) {
+        for (String k : hm.keySet()) {
+            if (k.equals(str)) return true;
+        }
+        return false;
+    }
 
 
     /*
@@ -67,7 +74,12 @@ public HashMap<String, String> createPerson() {
          The method must use the string provided to return the integer contained in the provided HashMap,
          or -1 if the string provided is not a key in the HashMap
      */
-
+    public int getValueOrDefault(HashMap<String, Integer> hm, String str) {
+        if (hm.containsKey(str)) {
+            return hm.get(str);
+        }
+        return -1;
+    }
 
 
     /*
@@ -89,13 +101,16 @@ public ArrayList<String> buildSecretPhrase(ArrayList<Integer> numbers) {
         map.put(7, "muse");
         map.put(96, "nice");
         // Write your code below this comment...
-
-
-
+        ArrayList<String> res = new ArrayList<>();
+        for (int n: numbers) {
+            if (map.containsKey(n)) {
+                res.add(map.get(n));
+            }
+        }
+        return res;
 
         // ...and above this comment
 
         // Change the return statement below to return your actual ArrayList
-        return new ArrayList<String>();
     }
 }