Working on methods

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

@@ -1,5 +1,12 @@
 package com.zipcodewilmington;
 
+import com.sun.deploy.util.ArrayUtil;
+
+import java.lang.reflect.Array;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+
 /**
  * Created by leon on 1/29/18.
  */
@@ -9,7 +16,8 @@ public class StringArrayUtils {
      * @return first element of specified array
      */ // TODO
     public static String getFirstElement(String[] array) {
-        return null;
+
+        return array[0];
     }
 
     /**
@@ -17,7 +25,8 @@ public class StringArrayUtils {
      * @return second element in specified array
      */
     public static String getSecondElement(String[] array) {
-        return null;
+
+        return array[1];
     }
 
     /**
@@ -25,7 +34,8 @@ 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 +43,8 @@ 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 +53,16 @@ public class StringArrayUtils {
      * @return true if the array contains the specified `value`
      */ // TODO
     public static boolean contains(String[] array, String value) {
-        return false;
+        boolean checker = false;
+
+        for (String word: array) {
+            if (word.equals(value)) {
+                checker = true;
+                break;
+            }
+        }
+
+        return checker;
     }
 
     /**
@@ -50,7 +70,13 @@ public class StringArrayUtils {
      * @return an array with identical contents in reverse order
      */ // TODO
     public static String[] reverse(String[] array) {
-        return null;
+
+        String[] reversedString = new String[array.length];
+
+        for (int i = array.length - 1, j = 0; i >= 0; i--, j++) {
+            reversedString[j] = array[i];
+        }
+        return reversedString;
     }
 
     /**
@@ -58,7 +84,15 @@ 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;
+        boolean palindromToken = false;
+        String[] reversedArray = StringArrayUtils.reverse(array);
+
+        for (int i = 0; i < array.length; i++) {
+            if (reversedArray[i].equals(array[i]) == true) {
+                palindromToken = true;
+            }
+        }
+        return palindromToken;
     }
 
     /**
@@ -66,7 +100,24 @@ 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;
+
+        boolean finderToken = false;
+
+        StringBuilder stringMaker = new StringBuilder();
+        for (String word: array) {
+            stringMaker.append(word);
+        }
+
+        String fullArrayString = stringMaker.toString().toLowerCase();
+
+        for (char find = 'a'; find <= 'z'; find++) {
+            if (fullArrayString.indexOf(find) == -1) {
+                finderToken = false;
+            } else {
+                finderToken = true;
+            }
+        }
+        return finderToken;
     }
 
     /**
@@ -75,7 +126,13 @@ 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 word: array) {
+            if (word.equals(value) == true) {
+                counter += 1;
+            }
+        }
+        return counter;
     }
 
     /**
@@ -84,7 +141,20 @@ 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> removedWordsArrayList = new ArrayList<String>(Arrays.asList(array));
+
+        for (int i = 0; i < removedWordsArrayList.size(); i++) {
+            if (removedWordsArrayList.get(i) == valueToRemove ) {
+                removedWordsArrayList.remove(i);
+            }
+        }
+
+        String[] newArray = new String[removedWordsArrayList.size()];
+
+        newArray = removedWordsArrayList.toArray(newArray);
+
+        return newArray;
     }
 
     /**
@@ -92,7 +162,19 @@ public class StringArrayUtils {
      * @return array of Strings with consecutive duplicates removes
      */ // TODO
     public static String[] removeConsecutiveDuplicates(String[] array) {
-        return null;
+
+        String[] newArray = new String[array.length];
+        String compare = "";
+        int newLength = 0;
+
+        for (int i = 0; i < array.length; i++) {
+            if (array[i].equals(compare) == false) {
+                compare = array[i];
+                newArray[newLength] = compare;
+                newLength++;
+            }
+        }
+        return Arrays.copyOf(newArray, newLength);
     }
 
     /**
@@ -100,6 +182,9 @@ 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) {
+
+        // First a loop to check for duplicates
+        
         return null;
     }