diff --git a/src/main/java/com/zipcodewilmington/assessment2/part1/BasicUtilities.java b/src/main/java/com/zipcodewilmington/assessment2/part1/BasicUtilities.java
index 1402353..7d0eb06 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part1/BasicUtilities.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part1/BasicUtilities.java
@@ -2,18 +2,28 @@
 
 public class BasicUtilities {
     public Boolean isGreaterThan5(Integer value) {
-        return null;
+        if (value >= 5){
+        return true;}
+        else return false;
     }
 
     public Boolean isLessThan7(Integer value) {
-        return null;
+        if (value <= 7){
+            return true;
+        }else return false;
     }
 
     public Boolean isBetween5And7(Integer valueToEvaluate) {
-        return null;
+        if (valueToEvaluate >= 5 && valueToEvaluate <= 7){
+            return true;
+        }
+        else return false;
     }
 
     public Boolean startsWith(String string, Character character) {
-        return null;
+        if (string.substring(1).toLowerCase().equals(character.toString().toLowerCase())){
+            return true;
+        }
+       else return false;
     }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part1/IntegerArrayUtilities.java b/src/main/java/com/zipcodewilmington/assessment2/part1/IntegerArrayUtilities.java
index a360000..d51ac30 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part1/IntegerArrayUtilities.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part1/IntegerArrayUtilities.java
@@ -2,18 +2,28 @@
 
 public class IntegerArrayUtilities {
     public Boolean hasEvenLength(Integer[] array) {
-        return null;
+        if (array.length % 2 == 0){
+            return true;
+        }
+        else return false;
     }
 
     public Integer[] range(int start, int stop) {
-        return null;
+        Integer[] newArr = new Integer[stop - start + 1];
+        for (int i = 0; i < newArr.length ; i++) {
+            newArr[i] = start;
+            start++;
+        }
+        return newArr;
     }
 
     public Integer getSumOfFirstTwo(Integer[] array) {
-        return null;
+        Integer sum = array[0] + array[1];
+        return sum;
     }
 
     public Integer getProductOfFirstTwo(Integer[] array) {
-        return null;
+        Integer sum = array[array.length - 1] * array[array.length-2];
+        return sum;
     }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part1/WuTangConcatenator.java b/src/main/java/com/zipcodewilmington/assessment2/part1/WuTangConcatenator.java
index 63f210e..e873b08 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part1/WuTangConcatenator.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part1/WuTangConcatenator.java
@@ -1,18 +1,28 @@
 package com.zipcodewilmington.assessment2.part1;
 
 public class WuTangConcatenator {
+    private Integer input;
     public WuTangConcatenator(Integer input) {
+        this.input = input;
     }
 
     public Boolean isWu() {
-        return null;
+        if(input % 3 == 0){
+        return true;}
+        else return false;
     }
 
     public Boolean isTang() {
-        return null;
+        if (input % 5 == 0){
+        return true;
+        }
+        else return false;
     }
 
     public Boolean isWuTang() {
-        return null;
+        if (input % 15 == 0){
+        return true;
+        }
+        else return false;
     }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part2/ArrayUtility.java b/src/main/java/com/zipcodewilmington/assessment2/part2/ArrayUtility.java
index de2f799..a7dedef 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part2/ArrayUtility.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part2/ArrayUtility.java
@@ -1,19 +1,61 @@
 package com.zipcodewilmington.assessment2.part2;
 
+
+
 public class ArrayUtility {
     public Integer[] merge(Integer[] array1, Integer[] array2) {
-        return null;
+        Integer[] newArr = new Integer[array1.length + array2.length];
+        for (int i = 0; i < array1.length ; i++) {
+            newArr[i] = array1[i];
+        }
+        for (int i = 0; i < array2.length ; i++) {
+            newArr[i + array1.length] = array2[i];
+        }
+        return newArr;
     }
 
     public Integer[] rotate(Integer[] array, Integer index) {
-        return null;
+        Integer[] newArr = new Integer[array.length];
+        for (int i = 0; i < newArr.length ; i++) {
+            newArr[i] = array[index];
+            index++;
+            if(index == array.length){
+                index = 0;
+            }
+        }
+        return newArr;
     }
 
     public Integer countOccurrence(Integer[] array1, Integer[] array2, Integer valueToEvaluate) {
-        return null;
+        Integer count = 0;
+
+        for (int i = 0; i < array1.length ; i++) {
+            if (array1[i] == valueToEvaluate){
+                count++;}
+        }
+        for (int i = 0; i < array2.length ; i++) {
+            if (array2[i] == valueToEvaluate){
+                count++;
+            }
+        }
+        return count;
     }
 
     public Integer mostCommon(Integer[] array) {
-        return null;
+        Integer mostOcc = 0;
+        Integer currCount = 0;
+        Integer occMost =0;
+        for (int i = 0; i <array.length ; i++) {
+            for (int j = i; j < array.length ; j++) {
+                if (array[i] == array[j]){
+                    currCount++;
+                }}
+            if(currCount > mostOcc){
+                mostOcc = currCount;
+                occMost = array[i];}
+                currCount = 0;
+
+        }
+        return occMost;
     }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part2/ListUtility.java b/src/main/java/com/zipcodewilmington/assessment2/part2/ListUtility.java
index e978685..fc3e582 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part2/ListUtility.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part2/ListUtility.java
@@ -1,29 +1,67 @@
 package com.zipcodewilmington.assessment2.part2;
 
+import java.util.ArrayList;
 import java.util.List;
 
 public class ListUtility {
+    private List<Integer> list = new ArrayList();
+
     public Boolean add(int i) {
-        return null;
+        Integer z =i;
+        if (z != null){
+        this.list.add(z);
+        return true;
+        }
+        else return false;
     }
 
     public Integer size() {
-        return null;
+        return list.size();
     }
 
     public List<Integer> getUnique() {
-        return null;
+        List<Integer> uniques = new ArrayList<>();
+        for (int i = 0; i < list.size() ; i++) {
+            for (int j = i+1; j < list.size() ; j++) {
+                if(list.get(i) != list.get(j)){
+                    uniques.set(i, list.get(i));
+                }
+            }
+        }
+        return uniques;
     }
 
     public String join() {
-        return null;
+        String string = "";
+        string += list.toString();
+        string.replace("[","" );
+        string.replace("]", "");
+        return string;
     }
 
     public Integer mostCommon() {
-        return null;
+        Integer mostOcc = 0;
+        Integer currCount = 0;
+        Integer occMost =0;
+        for (int i = 0; i <list.size() ; i++) {
+            for (int j = i; j < list.size() ; j++) {
+                if (list.get(i) == list.get(j)){
+                    currCount++;
+                }}
+            if(currCount > mostOcc){
+                mostOcc = currCount;
+                occMost = list.get(i);}
+            currCount = 0;
+
+        }
+        return occMost;
     }
 
     public Boolean contains(Integer valueToAdd) {
-        return null;
+        if(valueToAdd != null){
+            return list.contains(valueToAdd);
+        }
+
+       else return null;
     }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part2/Router.java b/src/main/java/com/zipcodewilmington/assessment2/part2/Router.java
index 2267425..8fe5511 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part2/Router.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part2/Router.java
@@ -1,20 +1,29 @@
 package com.zipcodewilmington.assessment2.part2;
 
+import java.util.HashMap;
+import java.util.Map;
+
 public class Router {
+    Map<String, String> map = new HashMap<>();
     public void add(String path, String controller) {
+        map.put(path, controller);
     }
 
     public Integer size() {
-        return null;
+        return map.size();
     }
 
     public String getController(String path) {
-        return null;
+
+        return map.get(path);
     }
 
     public void update(String path, String studentController) {
+        map.remove(path);
+        map.put(path, studentController);
     }
 
     public void remove(String path) {
+        map.remove(path);
     }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part3/Bird.java b/src/main/java/com/zipcodewilmington/assessment2/part3/Bird.java
index ee230c5..b2f9720 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part3/Bird.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part3/Bird.java
@@ -1,8 +1,8 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class Bird {
+public abstract class Bird implements Animal {
     public String move() {
-        return null;
+        return "fly";
     }
 
     public void setMigrationMonth(String expected) {
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part3/BlueJay.java b/src/main/java/com/zipcodewilmington/assessment2/part3/BlueJay.java
index f18d13a..eb183a4 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part3/BlueJay.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part3/BlueJay.java
@@ -1,4 +1,13 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class BlueJay {
+public class BlueJay extends Bird{
+    @Override
+    public int getSpeed() {
+        return 13;
+    }
+
+    @Override
+    public String color() {
+        return "blue";
+    }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part3/Horse.java b/src/main/java/com/zipcodewilmington/assessment2/part3/Horse.java
index e78cf2b..e033c1c 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part3/Horse.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part3/Horse.java
@@ -1,4 +1,18 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class Horse{
+public class Horse implements Animal{
+    @Override
+    public String move() {
+        return "gallop";
+    }
+
+    @Override
+    public int getSpeed() {
+        return 40;
+    }
+
+    @Override
+    public String color() {
+        return "brown";
+    }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part3/RedRobin.java b/src/main/java/com/zipcodewilmington/assessment2/part3/RedRobin.java
index c1e85f2..095fe7f 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part3/RedRobin.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part3/RedRobin.java
@@ -1,4 +1,24 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class RedRobin {
+public class RedRobin extends Bird {
+    private String migrationMonth;
+    @Override
+    public int getSpeed() {
+        return 10;
+    }
+
+    @Override
+    public String color() {
+        return "red";
+    }
+
+    @Override
+    public String getMigrationMonth() {
+        return migrationMonth;
+    }
+
+    @Override
+    public void setMigrationMonth(String migrationMonth) {
+        this.migrationMonth = migrationMonth;
+    }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part3/SpeedComparator.java b/src/main/java/com/zipcodewilmington/assessment2/part3/SpeedComparator.java
index 532e766..94e28c9 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part3/SpeedComparator.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part3/SpeedComparator.java
@@ -1,4 +1,15 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class SpeedComparator {
+import java.util.Comparator;
+
+public class SpeedComparator implements Comparator<Animal> {
+    @Override
+    public int compare(Animal o1, Animal o2) {
+       if (o1.getSpeed() == o2.getSpeed()){
+        return 0;}
+       if (o1.getSpeed()> o2.getSpeed()){
+           return -1;
+       }
+       else return +1;
+    }
 }