pre-merge commit

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

@@ -5,6 +5,7 @@ package rocks.zipcode.io.quiz4.collections;
  */
 public class ComparableTreeSet<_> {
     public ComparableTreeSet(_... arr) {
+
     }
 
 

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

@@ -9,6 +9,7 @@ public class SimpleStringGroup {
     }
 
     public Integer count() {
+
         return null;
     }
 

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

@@ -8,17 +8,24 @@ import java.util.Map;
  * @author leon on 11/12/2018.
  */
 public class ZipCodeWilmington {
+    private Student student;
+    private double numberOfHours;
+
     public void enroll(Student student) {
+        this.student = student;
     }
 
     public Boolean isEnrolled(Student student) {
+
         return null;
     }
 
     public void lecture(double numberOfHours) {
+        this.numberOfHours = numberOfHours;
     }
 
     public Map<Student, Double> getStudyMap() {
+
         return null;
     }
 }

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

@@ -1,12 +1,26 @@
 package rocks.zipcode.io.quiz4.fundamentals;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * @author leon on 11/12/2018.
  */
 public class StringEvaluator {
     public static String[] getAllPrefixes(String string) {
 
-        return null;
+        StringBuilder builder = new StringBuilder();
+        int index = 0;
+//        for (int j = 0; j < string.length()-1; j++) {
+
+            for (int i = 0; i < string.length(); i++) {
+                builder.append(string.charAt(i) + ",");
+                for (int j = 1; j < string.length()-1; j++) {
+                    builder.append(string.substring(i) + ",");
+                }
+            }
+
+        return builder.toString().split(",");
     }
 
     public static String[] getCommonPrefixes(String string1, String string2) {