Commit

StringArrayUtils.java

@@ -1,5 +1,4 @@
- 
-
+import java.util.*;
 /**
  * Created by leon on 1/29/18.
  */
@@ -9,7 +8,7 @@ public class StringArrayUtils {
      * @return first element of specified array
      */ // TODO
     public static String getFirstElement(String[] array) {
-        return null;
+        return array[0];
     }
 
     /**
@@ -17,7 +16,7 @@ public class StringArrayUtils {
      * @return second element in specified array
      */
     public static String getSecondElement(String[] array) {
-        return null;
+        return array[1];
     }
 
     /**
@@ -25,7 +24,7 @@ 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 +32,7 @@ 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];
     }
 
     /**
@@ -42,7 +41,14 @@ public class StringArrayUtils {
      * @return true if the array contains the specified `value`
      */ // TODO
     public static boolean contains(String[] array, String value) {
-        return false;
+        boolean answer = false;
+        for(String x : array){
+            if(x.equals(value)){
+                answer = true;
+            }
+
+        }
+        return answer;
     }
 
     /**
@@ -50,7 +56,18 @@ public class StringArrayUtils {
      * @return an array with identical contents in reverse order
      */ // TODO
     public static String[] reverse(String[] array) {
-        return null;
+        /*   StringBuilder x = new StringBuilder(array.toString());
+        x.reverse();
+        String[] answer = new String[x.toString().split(" ").length](x.reverse().toString());
+
+         */   
+        String[] x = new String[array.length];
+        int p = 0;
+        for(int i = array.length-1; i >= 0; i--){           
+            x[p] = array[i];
+            p++;
+        }
+        return x;
     }
 
     /**
@@ -58,7 +75,36 @@ public class StringArrayUtils {
      * @return true if the order of the array is the same backwards and forwards
      */ // TODO
     public static boolean isPalindromic(String[] array) {
+        int x = 0;
+        int y = array.length - 1;
+        boolean answer = true;
+        if(array.length % 2 == 0){
+            while(x < y && answer == true){
+                if(array[x] == array[y]){
+                    x++;
+                    y--;
+                } else{
+                    answer = false;
+                }
+            }
+        } else{
+            while(x != y && answer == true){
+                if(array[x] == array[y]){
+                    x++;
+                    y--;
+                } else{
+                    answer = false;
+                }
+            }
+        }
+
+        /*      if(reverse(array) != array){
         return false;
+        }
+        return true;
+
+         */
+        return answer;
     }
 
     /**
@@ -75,7 +121,13 @@ public class StringArrayUtils {
      * @return number of occurrences the specified `value` has occurred
      */ // TODO
     public static int getNumberOfOccurrences(String[] array, String value) {
-        return 0;
+        int counter = 0;
+        for(String x : array){
+            if(x == value){
+                counter++;
+            }
+        }
+        return counter;
     }
 
     /**
@@ -84,7 +136,16 @@ public class StringArrayUtils {
      * @return array with identical contents excluding values of `value`
      */ // TODO
     public static String[] removeValue(String[] array, String valueToRemove) {
-        return null;
+        ArrayList<String> x = new ArrayList<String>((Arrays.asList(array)));
+        for(String h : x){
+            if(h == valueToRemove){
+                x.remove(x.indexOf(h));
+            }
+        }
+
+        String[] q = new String[x.size()];
+        q = x.toArray(q);
+        return q;
     }
 
     /**
@@ -92,7 +153,16 @@ public class StringArrayUtils {
      * @return array of Strings with consecutive duplicates removes
      */ // TODO
     public static String[] removeConsecutiveDuplicates(String[] array) {
-        return null;
+        ArrayList<String> x = new ArrayList<String>();
+        // String[] y = new String[];
+        for(int i = 0; i < array.length; i++){
+            if(array[i] == array[i + 1]){
+                x.add(array[i]);
+            }	
+        }
+        String[] y = new String[x.size()];
+        x.toArray(y);
+        return y;
     }
 
     /**
@@ -103,5 +173,4 @@ public class StringArrayUtils {
         return null;
     }
 
-
 }

StringArrayUtilsTest.java

@@ -33,19 +33,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(expected, actual);
     }
 
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     @Test
     public void testGetSecondElement1() {
         String[] array = {"the", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"};
@@ -71,16 +58,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(expected, actual);
     }
 
-
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     @Test
     public void testGetLastElement1() {
         String[] array = {"the", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"};
@@ -97,7 +74,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(expected, actual);
     }
 
-
     @Test
     public void testGetLastElement3() {
         String[] array = {"the", "quick", "brown", "fox", "jumps", "over"};
@@ -106,26 +82,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(expected, actual);
     }
 
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     @Test
     public void testGetSecondToLastElement1() {
         String[] array = {"the", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"};
@@ -151,22 +107,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(expected, actual);
     }
 
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     @Test
     public void testContains() {
         String[] array = {"the", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"};
@@ -176,18 +116,6 @@ public class StringArrayUtilsTest {
         }
     }
 
-
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     @Test
     public void testReverse1() {
         String[] array = {"the", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"};
@@ -196,7 +124,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(expected, actual);
     }
 
-
     @Test
     public void testReverse2() {
         String[] array  = {"dog", "lazy", "the", "over", "jumps", "fox", "brown", "quick", "the"};
@@ -205,7 +132,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(expected, actual);
     }
 
-
     @Test
     public void testReverse3() {
         String[] expected = {"the", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"};
@@ -213,15 +139,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(expected, actual);
     }
 
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     @Test
     public void testIsPalindromic1() {
         String[] array = {"a", "b", "c", "b", "a"};
@@ -229,8 +146,6 @@ public class StringArrayUtilsTest {
         Assert.assertTrue(outcome);
     }
 
-
-
     @Test
     public void testIsPalindromic2() {
         String[] array = {"Is this a palindrome?", "This is a palindrome", "Is this a palindrome?"};
@@ -238,22 +153,13 @@ public class StringArrayUtilsTest {
         Assert.assertTrue(outcome);
     }
 
-
     @Test
     public void testIsPalindromic3() {
         String[] array = {"Is this a plaindrome?", "This is not a plaindrome", "Is this a palindrome?", "This is not a palindrome"};
         boolean outcome = StringArrayUtils.isPalindromic(array);
         Assert.assertFalse(outcome);
     }
-
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+    
     @Test
     public void testIsPangramic1() {
         String[] array = {"The quick brown", "Fox jumps over", "The lazy dog"};
@@ -275,7 +181,6 @@ public class StringArrayUtilsTest {
         Assert.assertTrue(outcome);
     }
 
-
     @Test
     public void testIsPangramic4() {
         String[] array = {"a", "b", "c", "d"};
@@ -283,18 +188,6 @@ public class StringArrayUtilsTest {
         Assert.assertFalse(outcome);
     }
 
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     @Test
     public void testGetNumberOfOccurrences1() {
         String[] array = {"aba", "aba", "baa", "bab", "bba", "bba", "bba", "bba", "bbb", "bbb"};
@@ -319,19 +212,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(actual, expected);
     }
 
-
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     @Test
     public void testRemoveConsecutiveDuplicates1() {
         String[] array = {"aba", "aba", "baa", "bab", "bba", "bba", "bba", "bba", "bbb", "bbb"};
@@ -340,8 +220,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(actual, expected);
     }
 
-
-
     @Test
     public void testRemoveConsecutiveDuplicates2() {
         String[] array = {"aba", "aba", "baa", "bab", "bba", "zzz", "bba", "bba", "bba", "bbb", "bbb"};
@@ -350,7 +228,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(actual, expected);
     }
 
-
     @Test
     public void testRemoveConsecutiveDuplicates3() {
         String[] array = {"aba", "aba", "baa", "bab", "bba", "zzz", "bba", "bba", "bba", "aba", "bbb"};
@@ -359,16 +236,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(actual, expected);
     }
 
-
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     @Test
     public void testRemovePackDuplicates1() {
         String[] array = {"a", "a", "a", "b", "c", "c", "a", "a", "d"};
@@ -377,7 +244,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(expected, actual);
     }
 
-
     @Test
     public void testRemovePackDuplicates2() {
         String[] array = {"t", "t", "q", "a", "a", "a", "b", "c", "c", "a", "a", "d", "e", "e", "e"};
@@ -386,8 +252,6 @@ public class StringArrayUtilsTest {
         Assert.assertEquals(expected, actual);
     }
 
-
-
     @Test
     public void testRemovePackDuplicates3() {
         String[] array = {"m", "o", "o", "n", "m", "a", "n"};
@@ -395,14 +259,7 @@ public class StringArrayUtilsTest {
         String[] actual = StringArrayUtils.packConsecutiveDuplicates(array);
         Assert.assertEquals(expected, actual);
     }
-
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+    
     @Test
     public void testRemoveValue() {
         String[] array = {"The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"};
@@ -426,16 +283,4 @@ public class StringArrayUtilsTest {
         String[] actual = StringArrayUtils.removeValue(array, "brown");
         Assert.assertEquals(expected, actual);
     }
-
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 }

package.bluej

@@ -0,0 +1,42 @@
+#BlueJ package file
+dependency1.from=StringArrayUtilsTest
+dependency1.to=StringArrayUtils
+dependency1.type=UsesDependency
+editor.fx.0.height=707
+editor.fx.0.width=762
+editor.fx.0.x=0
+editor.fx.0.y=22
+objectbench.height=101
+objectbench.width=776
+package.divider.horizontal=0.6
+package.divider.vertical=0.8007380073800738
+package.editor.height=427
+package.editor.width=674
+package.editor.x=20
+package.editor.y=42
+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