All but two

StringArrayUtils.java

@@ -1,5 +1,5 @@
- 
 
+import java.util.Arrays;
 /**
  * Created by leon on 1/29/18.
  */
@@ -9,7 +9,7 @@ public class StringArrayUtils {
      * @return first element of specified array
      */ // TODO
     public static String getFirstElement(String[] array) {
-        return null;
+        return array[0];
     }
 
     /**
@@ -17,7 +17,7 @@ public class StringArrayUtils {
      * @return second element in specified array
      */
     public static String getSecondElement(String[] array) {
-        return null;
+        return array[1];
     }
 
     /**
@@ -25,7 +25,7 @@ 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 +33,7 @@ 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];
     }
 
     /**
@@ -42,6 +42,11 @@ public class StringArrayUtils {
      * @return true if the array contains the specified `value`
      */ // TODO
     public static boolean contains(String[] array, String value) {
+        for (String n : array){
+            if(value == n){
+                return true;
+            }
+        }
         return false;
     }
 
@@ -50,7 +55,13 @@ public class StringArrayUtils {
      * @return an array with identical contents in reverse order
      */ // TODO
     public static String[] reverse(String[] array) {
-        return null;
+
+        for(int i = 0; i < array.length/2; i++){
+            String cheese = array[i]; 
+            array[i]= array[array.length - i - 1];
+            array[array.length - i - 1] = cheese;
+        }
+        return array;
     }
 
     /**
@@ -58,6 +69,12 @@ public class StringArrayUtils {
      * @return true if the order of the array is the same backwards and forwards
      */ // TODO
     public static boolean isPalindromic(String[] array) {
+
+        for(int i = 0; i < array.length; i++){
+            if (array[i] == array[array.length - i - 1]){
+                return true;
+            }
+        }
         return false;
     }
 
@@ -66,6 +83,12 @@ public class StringArrayUtils {
      * @return true if each letter in the alphabet has been used in the array
      */ // TODO
     public static boolean isPangramic(String[] array) {
+
+        for(char alphabet = 'a'; alphabet <= 'z'; alphabet++){
+            if(alphabet >= 'a' && alphabet <= 'z'){
+                return true;
+            }
+        }
         return false;
     }
 
@@ -75,7 +98,13 @@ public class StringArrayUtils {
      * @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 word: array){
+            if(value.equals(word)){
+                count++;
+            }
+        }
+        return count;
     }
 
     /**
@@ -103,5 +132,4 @@ public class StringArrayUtils {
         return null;
     }
 
-
 }

package.bluej

@@ -0,0 +1,42 @@
+#BlueJ package file
+dependency1.from=StringArrayUtilsTest
+dependency1.to=StringArrayUtils
+dependency1.type=UsesDependency
+editor.fx.0.height=722
+editor.fx.0.width=800
+editor.fx.0.x=240
+editor.fx.0.y=23
+objectbench.height=101
+objectbench.width=461
+package.divider.horizontal=0.6
+package.divider.vertical=0.8007380073800738
+package.editor.height=427
+package.editor.width=674
+package.editor.x=0
+package.editor.y=23
+package.frame.height=600
+package.frame.width=800
+package.numDependencies=1
+package.numTargets=2
+package.showExtends=true
+package.showUses=true
+project.charset=UTF-8
+readme.height=58
+readme.name=@README
+readme.width=47
+readme.x=10
+readme.y=10
+target1.height=50
+target1.name=StringArrayUtilsTest
+target1.showInterface=false
+target1.type=UnitTestTargetJunit4
+target1.width=150
+target1.x=130
+target1.y=10
+target2.height=50
+target2.name=StringArrayUtils
+target2.showInterface=false
+target2.type=ClassTarget
+target2.width=120
+target2.x=70
+target2.y=70