All test cases evaluate to true

pom.xml

@@ -7,6 +7,18 @@
     <groupId>com.zipcodewilmington.labs</groupId>
     <artifactId>arrayutils</artifactId>
     <version>1.0-SNAPSHOT</version>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
     <dependencies>
         <dependency>
             <groupId>junit</groupId>

src/main/java/com/zipcodewilmington/StringArrayUtils.java

@@ -1,5 +1,7 @@
 package com.zipcodewilmington;
 
+import java.util.*;
+
 /**
  * Created by leon on 1/29/18.
  */
@@ -25,15 +27,15 @@ public static String getSecondElement(String[] array) {
      * @return last element in specified array
      */ // TODO
     public static String getLastElement(String[] array) {
-        return null;
+        return array[array.length - 1];
     }
 
     /**
      * @param array array of String objects
      * @return second to last element in specified array
      */ // TODO
     public static String getSecondToLastElement(String[] array) {
-        return null;
+        return array[array.length - 2];
     }
 
     /**
@@ -42,31 +44,49 @@ public static String getSecondToLastElement(String[] array) {
      * @return true if the array contains the specified `value`
      */ // TODO
     public static boolean contains(String[] array, String value) {
-        return false;
+        List<String> arrayList = new ArrayList<>(Arrays.asList(array));
+        return arrayList.contains(value);
     }
 
     /**
      * @param array of String objects
      * @return an array with identical contents in reverse order
      */ // TODO
     public static String[] reverse(String[] array) {
-        return null;
+        String[] reversedArray = new String[array.length];
+        int j = array.length - 1;
+        for(int i = 0; i < array.length; i++){
+            reversedArray[j--] = array[i];
+        }
+        return reversedArray;
     }
 
     /**
      * @param array array of String objects
      * @return true if the order of the array is the same backwards and forwards
      */ // TODO
     public static boolean isPalindromic(String[] array) {
-        return false;
+        int midPoint = array.length / 2;
+        int lastIndex = array.length - 1;
+        for(int i = 0; i < midPoint; i++){
+            if(!array[i].equals(array[lastIndex - i])) return false;
+        }
+        return true;
     }
 
     /**
      * @param array array of String objects
      * @return true if each letter in the alphabet has been used in the array
      */ // TODO
     public static boolean isPangramic(String[] array) {
-        return false;
+        String alphabet = "abcdefghijklmnopqrstuvwxyz";
+        List<String> arrayList = new ArrayList<>(Arrays.asList(array));
+        String allContents = arrayList.toString();
+        allContents = allContents.replaceAll(",", "").replaceAll(" ", "").toLowerCase(Locale.ROOT);
+        for(int i = 0; i < alphabet.length(); i++){
+            if(allContents.indexOf(alphabet.charAt(i)) == -1) return false;
+        }
+        return true;
     }
 
     /**
@@ -75,7 +95,13 @@ public static boolean isPangramic(String[] array) {
      * @return number of occurrences the specified `value` has occurred
      */ // TODO
     public static int getNumberOfOccurrences(String[] array, String value) {
-        return 0;
+        int count = 0;
+        for(String element : array){
+            if(element == value){
+                count++;
+            }
+        }
+        return count;
     }
 
     /**
@@ -84,23 +110,55 @@ public static int getNumberOfOccurrences(String[] array, String value) {
      * @return array with identical contents excluding values of `value`
      */ // TODO
     public static String[] removeValue(String[] array, String valueToRemove) {
-        return null;
+        ArrayList<String> arrayList = new ArrayList<>();
+        Collections.addAll(arrayList, array);
+        while(arrayList.contains(valueToRemove)){
+            arrayList.remove(valueToRemove);
+        }
+        return arrayList.toArray(new String[0]);
     }
 
     /**
      * @param array array of chars
      * @return array of Strings with consecutive duplicates removes
      */ // TODO
     public static String[] removeConsecutiveDuplicates(String[] array) {
-        return null;
+        ArrayList<String> arrayList = new ArrayList<>();
+        String lastElement = "";
+        for(String element : array){
+            if(element != lastElement){
+                arrayList.add(element);
+            }
+            lastElement = element;
+        }
+        return arrayList.toArray(new String[0]);
     }
 
     /**
      * @param array array of chars
      * @return array of Strings with each consecutive duplicate occurrence concatenated as a single string in an array of Strings
      */ // TODO
+
+    /*
+     String[] array = {"a", "a", "a", "b", "c", "c", "a", "a", "d"}; arrayList has 1 position, and it's an a.
+     String[] expected = {"aaa", "b", "cc", "aa", "d"};
+
+     */
     public static String[] packConsecutiveDuplicates(String[] array) {
-        return null;
+        int length = array.length;
+        int lastIndex = 0;
+        ArrayList<String> arrayList = new ArrayList<>();
+        arrayList.add(array[0]);
+
+        for(int i = 1; i < length; i++){
+            if(arrayList.get(lastIndex).contains(array[i])){ //does my arrayList, at the last examined index contain what the array current shows
+                arrayList.set(lastIndex, (arrayList.get(lastIndex) + array[i])); //arrayList.set(index, value)
+            } else { //no longer looking at a consecutive
+                lastIndex++; //I'm looking at a new 0R non-duplicate character
+                arrayList.add(array[i]);
+            }
+        }
+        return arrayList.toArray(new String[0]);
     }