diff --git a/src/main/java/com/zipcodewilmington/assessment2/part1/BasicUtilities.java b/src/main/java/com/zipcodewilmington/assessment2/part1/BasicUtilities.java
index 1402353..b11457e 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part1/BasicUtilities.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part1/BasicUtilities.java
@@ -2,18 +2,20 @@
 
 public class BasicUtilities {
     public Boolean isGreaterThan5(Integer value) {
-        return null;
+        return value >= 5;
     }
 
     public Boolean isLessThan7(Integer value) {
-        return null;
+        return value<= 7;
     }
 
     public Boolean isBetween5And7(Integer valueToEvaluate) {
-        return null;
+
+        return isGreaterThan5(valueToEvaluate)&& isLessThan7(valueToEvaluate);
     }
 
     public Boolean startsWith(String string, Character character) {
-        return null;
+
+        return(string.charAt(0)== character || string.toLowerCase().charAt(0)==character);
     }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part1/IntegerArrayUtilities.java b/src/main/java/com/zipcodewilmington/assessment2/part1/IntegerArrayUtilities.java
index a360000..4f7fc44 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part1/IntegerArrayUtilities.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part1/IntegerArrayUtilities.java
@@ -1,19 +1,29 @@
 package com.zipcodewilmington.assessment2.part1;
 
+import sun.security.util.Length;
+
 public class IntegerArrayUtilities {
     public Boolean hasEvenLength(Integer[] array) {
-        return null;
+        return array.length % 2==0;
     }
 
     public Integer[] range(int start, int stop) {
-        return null;
+        int size =Math.abs(stop - start)+1;
+
+        Integer[] range= new Integer[size];
+        for(int i=0; i<range.length;i++)
+            range[i]=start+i;
+        return range;
+
+
     }
 
     public Integer getSumOfFirstTwo(Integer[] array) {
-        return null;
+        return array[0]+ array[1];
     }
 
     public Integer getProductOfFirstTwo(Integer[] array) {
-        return null;
+        int lastIdx = array.length -1;
+        return array[lastIdx]* array[lastIdx -1];
     }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part1/WuTangConcatenator.java b/src/main/java/com/zipcodewilmington/assessment2/part1/WuTangConcatenator.java
index 63f210e..a0fce16 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part1/WuTangConcatenator.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part1/WuTangConcatenator.java
@@ -1,18 +1,26 @@
 package com.zipcodewilmington.assessment2.part1;
 
 public class WuTangConcatenator {
+
+private Integer input;
     public WuTangConcatenator(Integer input) {
-    }
 
+     this.input =input;
+}
     public Boolean isWu() {
-        return null;
+
+
+    return input%3 ==0;
+
     }
 
     public Boolean isTang() {
-        return null;
-    }
 
-    public Boolean isWuTang() {
-        return null;
+        return input % 5==0;
     }
-}
+
+        public Boolean isWuTang() {
+        return  isWu()&& isTang();
+
+        }
+    }
\ No newline at end of file
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part2/ArrayUtility.java b/src/main/java/com/zipcodewilmington/assessment2/part2/ArrayUtility.java
index de2f799..d9e280c 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part2/ArrayUtility.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part2/ArrayUtility.java
@@ -1,19 +1,81 @@
 package com.zipcodewilmington.assessment2.part2;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+
 public class ArrayUtility {
     public Integer[] merge(Integer[] array1, Integer[] array2) {
-        return null;
+
+        ArrayList<Integer>newList=new ArrayList<Integer>();
+
+
+                int newLength =array1.length+ array2.length;
+                newList.addAll(Arrays.asList(array1));
+                newList.addAll(Arrays.asList(array2));
+                return newList.toArray(new Integer[newLength]);
     }
 
     public Integer[] rotate(Integer[] array, Integer index) {
-        return null;
-    }
 
+        Integer[] newArray = new Integer[array.length];
+        for (int i = array.length - 1; i >= 0; i--) {
+            if (i - index >= 0) {
+                newArray[i - index] = array[i];
+            } else {
+                newArray[i - index + array.length] = array[i];
+            }
+        }
+        return newArray;
+    }
+public static Integer getNumberOfOcurrences(Integer[] array, Integer valueToCount) {
+    int numOfOccurrences = 0;
+    for (Integer value : array) {
+        if (value == valueToCount)
+            numOfOccurrences = numOfOccurrences + 1;
+    }
+    return numOfOccurrences;
+}
     public Integer countOccurrence(Integer[] array1, Integer[] array2, Integer valueToEvaluate) {
-        return null;
+//Integer[] mergedArray= merge[array1,array2];
+return null;//getNumberOfOcurrences(mergedArray, valueToEvaluate);
     }
 
+
     public Integer mostCommon(Integer[] array) {
-        return null;
-    }
-}
+        int count = 1, tempCount;
+        int popular = array[0];
+        int temp = 0;
+        for (int i = 0; i < (array.length - 1); i++)
+            temp = array[i];
+        {
+            tempCount = 0;
+            for (int j = 1; j < array.length; j++) {
+                if (temp == array[j])
+                    tempCount++;
+            }
+            if (tempCount > count) {
+                popular = temp;
+                count = tempCount;
+
+            }
+        }
+        return popular;
+
+            //Integer[] occurrences = new Integer[array.length];
+           // for (int i = 0; i < array.length; i++) {
+              //  occurrences[i] = getNumberOfOccurrences(array, array[i]);
+           // }
+            // find most common (max # of occurrences) and return
+            //int max = occurrences[0];
+           // int maxIdx = 0;
+           // for (int i = 1; i < occurrences.length; i++) {
+               // if (occurrences[i] > max) {
+               //     max = occurrences[i];
+                 //   maxIdx = i;
+               // }
+           // }
+        
+        }}
+
+
+
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part3/BlueJay.java b/src/main/java/com/zipcodewilmington/assessment2/part3/BlueJay.java
index f18d13a..9dae8b5 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part3/BlueJay.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part3/BlueJay.java
@@ -1,4 +1,15 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class BlueJay {
+public class BlueJay extends Bird {
+    public BlueJay(){
+
+    }
+
+
+    public String color() {
+        return "blue";
+    }
+    public int getSpeed(){
+        return 13;
+    }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part3/Horse.java b/src/main/java/com/zipcodewilmington/assessment2/part3/Horse.java
index e78cf2b..b81ef2e 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part3/Horse.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part3/Horse.java
@@ -1,4 +1,14 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class Horse{
+public class Horse implements Animal{
+    public String move(){
+       return "gallop";
+    }
+     public String color(){
+        return "brown";
+     }
+
+    public int getSpeed() {
+        return 40;
+    }
 }
diff --git a/src/main/java/com/zipcodewilmington/assessment2/part3/RedRobin.java b/src/main/java/com/zipcodewilmington/assessment2/part3/RedRobin.java
index c1e85f2..43fbd84 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part3/RedRobin.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part3/RedRobin.java
@@ -1,4 +1,26 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class RedRobin {
+public class RedRobin extends Bird{
+    String migrationMonth;
+    public RedRobin(){
+    }
+
+
+    public String color(){
+     return "red";
+
+    }
+    public int getSpeed(){
+        return 10;
+    }
+
+
+    @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..04c960a 100644
--- a/src/main/java/com/zipcodewilmington/assessment2/part3/SpeedComparator.java
+++ b/src/main/java/com/zipcodewilmington/assessment2/part3/SpeedComparator.java
@@ -1,4 +1,11 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class SpeedComparator {
+
+import java.util.Comparator;
+
+public class SpeedComparator implements Comparator<Animal> {
+    public int compare(Animal animal1, Animal animal2) {
+   return animal2.getSpeed() - animal1.getSpeed();
+    }
+
 }