Finished ex

Author: Hanna Adenholm

src/main/java/com/booleanuk/core/Exercise.java

@@ -48,7 +48,7 @@ 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:
@@ -58,7 +58,7 @@ public HashMap<String, String> createPerson() {
          in the provided HashMap
      */
 
-
+    public boolean hasKey(HashMap<String, String> map, String key) { return map.containsKey(key);}
 
     /*
         TODO: 3. Create a method named getValueOrDefault that accepts two parameters:
@@ -68,7 +68,11 @@ public HashMap<String, String> createPerson() {
          or -1 if the string provided is not a key in the HashMap
      */
 
-
+    public int getValueOrDefault(HashMap<String, Integer> map, String key) {
+        if (map.containsKey(key))
+            return map.get(key);
+        return -1;
+    }
 
     /*
         TODO: 4. Complete the method below
@@ -90,12 +94,17 @@ public ArrayList<String> buildSecretPhrase(ArrayList<Integer> numbers) {
         map.put(96, "nice");
         // Write your code below this comment...
 
+        ArrayList<String> phrase = new ArrayList<>();
 
+        for(Integer num: numbers){
+            if (map.containsKey(num))
+                phrase.add(map.get(num));
+        }
 
 
         // ...and above this comment
 
         // Change the return statement below to return your actual ArrayList
-        return new ArrayList<String>();
+        return phrase;
     }
 }