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pom.xml

@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>com.zipcodewilmington.assessment1</groupId>
-    <artifactId>question1</artifactId>
+    <artifactId>assessment1</artifactId>
     <version>1.0-SNAPSHOT</version>
     <build>
         <plugins>

src/main/java/com/zipcodewilmington/assessment1/part1/BasicArrayUtils.java

@@ -9,30 +9,34 @@ public class BasicArrayUtils {
      * @return the first element in the array
      */
     public static String getFirstElement(String[] stringArray) {
-        return null;
+        String[] stringFirstArray;
+        return stringArray[0];
     }
 
     /**
      * @param stringArray an array of String objects
      * @return the second element in the array
      */
     public static String getSecondElement(String[] stringArray) {
-        return null;
+        String[] stringSecondArray;
+        return stringArray[1];
     }
 
     /**
      * @param stringArray an array of String objects
      * @return the last element in the array
      */
     public static String getLastElement(String[] stringArray) {
-        return null;
+        String[] stringLastArray;
+        return stringArray[stringArray.length - 1];
     }
 
     /**
      * @param stringArray an array of String objects
      * @return the second to last element in the array
      */
     public static String getSecondToLastElement(String[] stringArray) {
-        return null;
+        String[] stringSecondToLastArray;
+       return stringArray[stringArray.length - 2];
     }
 }

src/main/java/com/zipcodewilmington/assessment1/part1/BasicStringUtils.java

@@ -9,23 +9,25 @@ public class BasicStringUtils {
      * @return string with identical content, and the first character capitalized
      */
     public static String camelCase(String str) {
-        return null;
+        String strCamel;
+        return str.substring(0,1).toUpperCase() + str.substring(1);
     }
 
     /**
      * @param str string input from client
      * @return string with identical contents, in the reverse order
      */
     public static String reverse(String str) {
-        return null;
+        String strReverse;
+        return new StringBuilder(str).reverse().toString();
     }
-
     /**
      * @param str string input from client
      * @return string with identical contents, in reverse order, with first character capitalized
      */
     public static String reverseThenCamelCase(String str) {
-        return null;
+        String strReverseCamel;
+        return new StringBuilder(str).reverse().toString().toUpperCase();
     }
 
 
@@ -34,14 +36,17 @@ public static String reverseThenCamelCase(String str) {
      * @return string with identical contents excluding first and last character
      */
     public static String removeFirstAndLastCharacter(String str) {
-        return null;
+        String strF;
+        return str.substring(1, str.length()-1);
     }
 
     /**
      * @param str a string input from user
      * @return string with identical characters, each with opposite casing
      */
     public static String invertCasing(String str) {
+        String invertC;
+
         return null;
     }
 }

src/main/java/com/zipcodewilmington/assessment1/part1/IntegerArrayUtils.java

@@ -6,25 +6,39 @@
 public class IntegerArrayUtils {
     /**
      * @param intArray an array of integers
-     * @return the sum of `intArray`
+     * @return
      */
     public static Integer getSum(Integer[] intArray) {
-        return null;
+        int sum = 0;
+        int i;
+        for (i = 0; i < intArray.length; i++){
+            sum += intArray[i];
+        }
+        return sum;
     }
 
     /**
      * @param intArray an array of integers
      * @return the product of `intArray`
      */
     public static Integer getProduct(Integer[] intArray) {
-        return null;
+        int product = 1;
+        for (int i = 0; i < intArray.length; i++) {
+            product  *= intArray[i];
+        }
+        return product;
     }
 
     /**
      * @param intArray an array of integers
      * @return the sum of `intArray` divided by number of elements in `intArray`
      */
     public static Double getAverage(Integer[] intArray) {
-        return null;
+        int sum = 0;
+        int i;
+        for (i = 0; i < intArray.length; i++){
+            sum += intArray[i] ;
+        }
+        return (double) sum / intArray.length;
     }
 }

src/main/java/com/zipcodewilmington/assessment1/part1/IntegerUtils.java

@@ -14,6 +14,7 @@ public static Integer getSumOfN(Integer n) {
         return null;
     }
 
+
     /**
      * @param n integer value input by client
      * @return the product of all integers between 0 and not including `n`
@@ -26,7 +27,5 @@ public static Integer getProductOfN(Integer n) {
      * @param val integer value input by client
      * @return integer with identical digits in the reverse order
      */
-    public static Integer reverseDigits(Integer val) {
-        return null;
-    }
+    public static Integer reverseDigits(Integer val) {return null;}
 }

src/main/java/com/zipcodewilmington/assessment1/part3/Animal.java

@@ -5,4 +5,5 @@
  */
 public interface Animal {
     String speak();
+
 }