lab completed

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>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
     <dependencies>
         <dependency>
             <groupId>junit</groupId>

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

@@ -1,5 +1,11 @@
 package com.zipcodewilmington;
 
+import com.sun.tools.javac.util.ArrayUtils;
+import org.omg.CORBA.Current;
+
+import java.sql.SQLOutput;
+import java.util.*;
+
 /**
  * Created by leon on 1/29/18.
  */
@@ -9,7 +15,8 @@ public class StringArrayUtils {
      * @return first element of specified array
      */ // TODO
     public static String getFirstElement(String[] array) {
-        return null;
+
+        return array[0];
     }
 
     /**
@@ -17,7 +24,8 @@ public class StringArrayUtils {
      * @return second element in specified array
      */
     public static String getSecondElement(String[] array) {
-        return null;
+
+        return array[1];
     }
 
     /**
@@ -25,7 +33,8 @@ public class StringArrayUtils {
      * @return last element in specified array
      */ // TODO
     public static String getLastElement(String[] array) {
-        return null;
+
+        return array[array.length - 1];
     }
 
     /**
@@ -33,7 +42,8 @@ public class StringArrayUtils {
      * @return second to last element in specified array
      */ // TODO
     public static String getSecondToLastElement(String[] array) {
-        return null;
+
+        return array[array.length - 2];
     }
 
     /**
@@ -42,7 +52,8 @@ public class StringArrayUtils {
      * @return true if the array contains the specified `value`
      */ // TODO
     public static boolean contains(String[] array, String value) {
-        return false;
+
+        return Arrays.asList(array).contains(value);
     }
 
     /**
@@ -50,7 +61,10 @@ public class StringArrayUtils {
      * @return an array with identical contents in reverse order
      */ // TODO
     public static String[] reverse(String[] array) {
-        return null;
+        String[] a = Arrays.copyOf(array, array.length);
+        List<String> list = Arrays.asList(a);
+        Collections.reverse(list);
+        return (String[]) list.toArray();
     }
 
     /**
@@ -58,7 +72,16 @@ public class StringArrayUtils {
      * @return true if the order of the array is the same backwards and forwards
      */ // TODO
     public static boolean isPalindromic(String[] array) {
-        return false;
+        int length = array.length;
+        for (int i = 0; i < array.length; i++) {
+            String start = array[i];
+            String end = array[--length];
+            if (array.length < i) {
+                return true;
+            }
+            if (start != end) return false;
+        }
+        return true;
     }
 
     /**
@@ -66,7 +89,11 @@ public class StringArrayUtils {
      * @return true if each letter in the alphabet has been used in the array
      */ // TODO
     public static boolean isPangramic(String[] array) {
-        return false;
+        String asString = Arrays.toString(array);
+        asString = asString.toLowerCase();
+        boolean isPang = asString.chars().filter(i -> i >= 'a' && i <= 'z').distinct().count() == 26;
+
+        return isPang;
     }
 
     /**
@@ -75,16 +102,31 @@ public class StringArrayUtils {
      * @return number of occurrences the specified `value` has occurred
      */ // TODO
     public static int getNumberOfOccurrences(String[] array, String value) {
-        return 0;
+
+        int counter = 0;
+        for (int i = 0; i < array.length; i++) {
+            if (array[i].equals(value))
+                counter++;
+        }
+        return counter;
     }
 
+
     /**
      * @param array         array of String objects
      * @param valueToRemove value to remove from array
      * @return array with identical contents excluding values of `value`
      */ // TODO
     public static String[] removeValue(String[] array, String valueToRemove) {
-        return null;
+
+        List result = new LinkedList();
+        for (String keepMe : array) {
+            if (!valueToRemove.equals(keepMe)) {
+                result.add(keepMe);
+            }
+        }
+        String[] newArray = new String[result.size()]; //create new array with length of list
+        return (String[]) result.toArray(newArray);
     }
 
     /**
@@ -92,7 +134,18 @@ public class StringArrayUtils {
      * @return array of Strings with consecutive duplicates removes
      */ // TODO
     public static String[] removeConsecutiveDuplicates(String[] array) {
-        return null;
+
+        ArrayList<String> listArray = new ArrayList<>();
+
+        for (int i = 0; i < array.length - 1; i++) {
+            if (!array[i].equals(array[i + 1])) {
+                listArray.add(array[i]);
+                System.out.println(listArray);
+            }
+        }
+        listArray.add(array[array.length - 1]);
+        String[] newArray = new String[listArray.size()];
+        return listArray.toArray(newArray);
     }
 
     /**
@@ -100,8 +153,22 @@ public class StringArrayUtils {
      * @return array of Strings with each consecutive duplicate occurrence concatenated as a single string in an array of Strings
      */ // TODO
     public static String[] packConsecutiveDuplicates(String[] array) {
-        return null;
-    }
+        StringBuilder builder2 = new StringBuilder();
+        String CurrentChar = "";
 
+        for (int i = 0; i < array.length; i++) {
 
+            if (CurrentChar.equals(array[i])) {
+                builder2.append(array[i]);
+
+            } else {
+                builder2.append("," + array[i]);
+                CurrentChar = array[i];
+            }
+
+        }
+        CurrentChar = builder2.substring(1, builder2.length());
+
+        return CurrentChar.split(",");
+    }
 }

src/test/java/com/zipcodewilmington/StringArrayUtilsTest.java

@@ -210,7 +210,7 @@ public class StringArrayUtilsTest {
     public void testReverse3() {
         String[] expected = {"the", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"};
         String[] actual = StringArrayUtils.reverse(StringArrayUtils.reverse(expected));
-        Assert.assertEquals(expected, actual);
+        Assert.assertArrayEquals(expected, actual);
     }
 
 
@@ -408,7 +408,8 @@ public class StringArrayUtilsTest {
         String[] array = {"The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"};
         String[] expected = {"quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"};
         String[] actual = StringArrayUtils.removeValue(array, "The");
-        Assert.assertEquals(expected, actual);
+        System.out.println(actual.length);
+        Assert.assertArrayEquals(expected, actual);
     }
 
     @Test