done last method

src/main/java/com/zipcodewilmington/phonebook/PhoneBook.java

@@ -1,11 +1,8 @@
 package com.zipcodewilmington.phonebook;
 
-import java.util.List;
-import java.util.ArrayList;
+import java.util.*;
 //import java.util.HashMap;
-import java.util.Iterator;
-import java.util.LinkedHashMap;
-import java.util.Map;
+
 
 /**
  * Created by leon on 1/23/18.
@@ -16,39 +13,63 @@ public class PhoneBook {
     private final Map<String, List<String>> phonebook;
 
     public PhoneBook(Map<String, List<String>> map) {
-        this.phonebook = null;
+        this.phonebook = map;
     }
 
     public PhoneBook() {
-        this(null);
+        this.phonebook = new LinkedHashMap<String, List<String>>();
     }
 
     public void add(String name, String phoneNumber) {
+        phonebook.put(name,new ArrayList<String>());
+        phonebook.get(name).add(phoneNumber);
     }
 
     public void addAll(String name, String... phoneNumbers) {
+        phonebook.put(name, Arrays.asList(phoneNumbers));
+
     }
 
     public void remove(String name) {
+        phonebook.remove(name);
     }
 
     public Boolean hasEntry(String name) {
-        return null;
+        if(phonebook.containsKey(name)){
+            return true;
+        }
+
+        return false;
+    }
+    public Boolean hasEntry(String name, String string) {
+        if(phonebook.containsKey(name)){
+            return true;
+        }
+        return false;
     }
 
     public List<String> lookup(String name) {
-        return null;
+        return phonebook.get(name);
     }
 
-    public String reverseLookup(String phoneNumber)  {
-        return null;
+     public String reverseLookup(String phoneNumber)  {
+         String list = "";
+         for(String key: phonebook.keySet()){
+             if(phonebook.get(key).equals(phoneNumber)) {
+                 list = list.concat(key);
+                 return list;
+             }
+         }
+         return null;
     }
 
     public List<String> getAllContactNames() {
-        return null;
+        LinkedHashMap<String, List<String>> newMap = new LinkedHashMap<String, List<String>>();
+        newMap.putAll(phonebook);
+        return new ArrayList<String>(newMap.keySet());
     }
 
     public Map<String, List<String>> getMap() {
-        return null;
+        return phonebook;
     }
 }

src/test/java/com/zipcodewilmington/phonebook/RemoveTest.java

@@ -3,6 +3,11 @@
 import org.junit.Assert;
 import org.junit.Test;
 
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
 public class RemoveTest {
     @Test
     public void test1() {
@@ -13,6 +18,9 @@ public void test1() {
         phoneBook.add(name, phoneNumber);
         Assert.assertTrue(phoneBook.hasEntry(name, phoneNumber));
 
+        Map<String, List<String>> demoPhonebook = phoneBook.getMap();
+        PhoneBook newPhoneBook = new PhoneBook(demoPhonebook);
+
         // when
         phoneBook.remove(name);