commit message

StringArrayUtils.java

@@ -9,31 +9,53 @@ public class StringArrayUtils {
      * @return first element of specified array
      */ // TODO
     public static String getFirstElement(String[] array) {
-        return null;
+        if (array.length > 0){
+            return array[0];
+        }
+        else{
+            return null;
+        }
+
+
     }
 
     /**
      * @param array array of String objects
      * @return second element in specified array
      */
     public static String getSecondElement(String[] array) {
-        return null;
+        if (array.length > 0){
+            return array[1];
+        }
+        else{
+            return null;
+        }
     }
 
     /**
      * @param array array of String objects
      * @return last element in specified array
      */ // TODO
     public static String getLastElement(String[] array) {
-        return null;
+        if (array.length > 0){
+            return array[array.length-1];
+        }
+        else{
+            return null;
+        }
     }
 
     /**
      * @param array array of String objects
      * @return second to last element in specified array
      */ // TODO
     public static String getSecondToLastElement(String[] array) {
-        return null;
+        if (array.length > 0){
+            return array[array.length-2];
+        }
+        else{
+            return null;
+        }
     }
 
     /**
@@ -42,6 +64,9 @@ public static String getSecondToLastElement(String[] array) {
      * @return true if the array contains the specified `value`
      */ // TODO
     public static boolean contains(String[] array, String value) {
+        for(String item : array){
+            if (value == item){return true;}
+        }
         return false;
     }
 
@@ -50,23 +75,55 @@ public static boolean contains(String[] array, String value) {
      * @return an array with identical contents in reverse order
      */ // TODO
     public static String[] reverse(String[] array) {
-        return null;
+        String[] res = new String[array.length];
+        for(int i = 0; i < array.length; i++){
+            res[array.length-1-i] = array[i];
+        }
+        return res;
     }
 
     /**
      * @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 i = 0;
+        int j = array.length-1;
+        while( i < j){
+            if (array[i] != array[j]){
+                return false;
+            }
+            i++;
+            j--;
+        }
+        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;
+        boolean[] checked = new boolean[26];
+        for(String item : array){
+            int strLen = item.length();
+            for(int i = 0; i < strLen; i++){
+                char a = item.charAt(i);
+                if(a >= 'A' && a <= 'Z'){
+                    checked[a-'A'] = true;
+                }
+                else if (a >= 'a' && a <= 'z'){
+                    checked[a-'a'] = true;
+                }
+            }
+        }
+
+        for(int i = 0; i < 26; i++){
+            if(checked[i] == false){
+            return false;
+        }
+        }
+        return true;
     }
 
     /**
@@ -75,16 +132,30 @@ 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 res = 0;
+        for(String str : array){
+            if(str == value){
+                res++;
+            }
+        }
+        return res;
     }
 
     /**
      * @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;
+        String[] res = new String[array.length-1];
+        int i = 0;
+        for(String str : array){
+            if(str != valueToRemove){
+                res[i++] = str;
+            }
+        }
+        return res;
     }
 
     /**
@@ -102,6 +173,4 @@ public static String[] removeConsecutiveDuplicates(String[] array) {
     public static String[] packConsecutiveDuplicates(String[] array) {
         return null;
     }
-
-
 }

package.bluej

@@ -1,23 +1,23 @@
 #BlueJ package file
-dependency1.from=GetFirstElementTest
+dependency1.from=ReverseTest
 dependency1.to=StringArrayUtils
 dependency1.type=UsesDependency
-dependency10.from=RemoveConsecutiveDuplicatesTest
+dependency10.from=IsPalindromicTest
 dependency10.to=StringArrayUtils
 dependency10.type=UsesDependency
-dependency11.from=IsPalindromicTest
+dependency11.from=GetSecondElementTest
 dependency11.to=StringArrayUtils
 dependency11.type=UsesDependency
-dependency12.from=GetSecondElementTest
+dependency12.from=ContainsTest
 dependency12.to=StringArrayUtils
 dependency12.type=UsesDependency
-dependency13.from=ContainsTest
+dependency13.from=RemoveValueTest
 dependency13.to=StringArrayUtils
 dependency13.type=UsesDependency
-dependency2.from=ReverseTest
+dependency2.from=StringArrayUtilsTest
 dependency2.to=StringArrayUtils
 dependency2.type=UsesDependency
-dependency3.from=StringArrayUtilsTest
+dependency3.from=GetFirstElementTest
 dependency3.to=StringArrayUtils
 dependency3.type=UsesDependency
 dependency4.from=GetNumberOfOccurrencesTest
@@ -32,26 +32,26 @@ dependency6.type=UsesDependency
 dependency7.from=RemovePackDuplicatesTest
 dependency7.to=StringArrayUtils
 dependency7.type=UsesDependency
-dependency8.from=RemoveValueTest
+dependency8.from=IsPangramicTest
 dependency8.to=StringArrayUtils
 dependency8.type=UsesDependency
-dependency9.from=IsPangramicTest
+dependency9.from=RemoveConsecutiveDuplicatesTest
 dependency9.to=StringArrayUtils
 dependency9.type=UsesDependency
 editor.fx.0.height=704
-editor.fx.0.width=800
-editor.fx.0.x=224
-editor.fx.0.y=155
-objectbench.height=107
-objectbench.width=837
+editor.fx.0.width=771
+editor.fx.0.x=-1336
+editor.fx.0.y=24
+objectbench.height=221
+objectbench.width=976
 package.divider.horizontal=0.6397146254458977
-package.divider.vertical=0.8235294117647058
-package.editor.height=509
-package.editor.width=727
-package.editor.x=77
-package.editor.y=158
+package.divider.vertical=0.6470588235294118
+package.editor.height=411
+package.editor.width=866
+package.editor.x=82
+package.editor.y=31
 package.frame.height=704
-package.frame.width=861
+package.frame.width=1000
 package.numDependencies=13
 package.numTargets=14
 package.showExtends=true
@@ -117,7 +117,7 @@ target3.showInterface=false
 target3.type=UnitTestTargetJunit4
 target3.width=140
 target3.x=10
-target3.y=180
+target3.y=590
 target4.height=50
 target4.name=GetNumberOfOccurrencesTest
 target4.showInterface=false
@@ -130,8 +130,8 @@ target5.name=GetSecondToLastElement
 target5.showInterface=false
 target5.type=UnitTestTargetJunit4
 target5.width=170
-target5.x=20
-target5.y=450
+target5.x=10
+target5.y=170
 target6.height=50
 target6.name=GetLastElementTest
 target6.showInterface=false