got a few more to pass

src/main/java/rocks/zipcode/io/quiz4/collections/ZipCodeWilmington.java

@@ -9,14 +9,11 @@ import java.util.*;
  */
 public class ZipCodeWilmington {
     private List<Student> students = new LinkedList<>();
-    HashMap<Student,Double> maps;
-
-
-    public void enroll(Student student) {
-        students.add(student);
 
 
 
+    public void enroll(Student student) {
+       students.add(student);
     }
 
     public Boolean isEnrolled(Student student) {
@@ -27,18 +24,18 @@ public class ZipCodeWilmington {
 
     public void lecture(double numberOfHours) {
         for (Student x: students) {
+
             x.learn(numberOfHours);
-            maps.put(x,x.getTotalStudyTime());
-            System.out.println(x);
         }
 
 
     }
 
     public Map<Student, Double> getStudyMap() {
+        HashMap<Student,Double> maps = new HashMap<>();
+        return maps;
+
 
-        maps.put(students.,student.getTotalStudyTime());
 
-        return maps;
     }
 }

src/main/java/rocks/zipcode/io/quiz4/fundamentals/StringEvaluator.java

@@ -9,13 +9,14 @@ import java.util.List;
 public class StringEvaluator {
     public static String[] getAllPrefixes(String string) {
         ArrayList<String> list = new ArrayList<>();
-        String start = "";
+        String seen = "";
+        int notseen = seen.length();
 
 
 
         for (int i = 0; i < string.length() ; i++) {
 
-            list.add(start);
+
         }
             return list.toArray(new String[0]);
     }

src/main/java/rocks/zipcode/io/quiz4/objectorientation/StringAssembler.java

@@ -1,5 +1,8 @@
 package rocks.zipcode.io.quiz4.objectorientation;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * @author leon on 11/12/2018.
  */
@@ -14,34 +17,44 @@ public class StringAssembler {
 
     }
 
-    public StringAssembler append(String str) {
-        StringAssembler sA = new StringAssembler(ch);
-        String[] split = str.split(" ");
-        String x = "";
-        StringBuffer sb = new StringBuffer();
-
-        for (int i = 0; i < str.length() ; i++) {
+    public StringAssembler(String str){
+        this.str = str;
+    }
 
+    public StringAssembler append(String str) {
 
+        int counter = 0;
+        String st = "";
+        StringBuilder sb = new StringBuilder();
+        List<String> list = new ArrayList<String>();
 
-            sb.append(split[i]);
-            sb.append(ch);
+            if(str != null) {
+                list.add(str);
+            }
+        for (int i = 0; i < list.size() ; i++) {
 
+            sb.append(str);
         }
 
-        x = sb.toString();
+        st = sb.toString();
 
+        StringAssembler sA = new StringAssembler(st);
 
         return sA;
 
+
     }
 
     public String assemble() {
 
+        StringBuffer sb = new StringBuffer();
+        String r = "";
 
 
+        sb.append(ch);
 
-       return null;
 
+        r = sb.toString();
+        return r;
     }
 }

src/main/java/rocks/zipcode/io/quiz4/objectorientation/StringEvaluatorObject.java

@@ -1,14 +1,27 @@
 package rocks.zipcode.io.quiz4.objectorientation;
 
+import rocks.zipcode.io.quiz4.fundamentals.StringEvaluator;
+
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * @author leon on 19/12/2018.
  */
 public class StringEvaluatorObject {
+    String str;
     public StringEvaluatorObject(String str) {
+        this.str = str;
     }
 
     public String[] getAllPrefixes() {
-        return null;
+        List<String> listing = new ArrayList<>();
+
+        for (int i = 0; i < str.length(); i++) {
+           listing.add(str.substring(i));
+        }
+
+        return listing.toArray(new String[0]);
     }
 
     public String[] getCommonPrefixes(String secondInput) {