String Utilities

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

@@ -1,4 +1,6 @@
 package com.zipcodewilmington;
+import java.lang.reflect.Array;
+import java.util.Arrays;
 
 /**
  * Created by leon on 1/29/18.
@@ -9,7 +11,7 @@ public class StringArrayUtils {
      * @return first element of specified array
      */ // TODO
     public static String getFirstElement(String[] array) {
-        return null;
+        return array[0];
     }
 
     /**
@@ -17,15 +19,18 @@ public class StringArrayUtils {
      * @return second element in specified array
      */
     public static String getSecondElement(String[] array) {
-        return null;
+        return array[1];
     }
 
     /**
      * @param array array of String objects
      * @return last element in specified array
      */ // TODO
-    public static String getLastElement(String[] array) {
-        return null;
+    public static String getLastElement(String[] array)
+    {
+    String lastElement = array[array.length - 1];
+
+    return lastElement;
     }
 
     /**
@@ -33,7 +38,10 @@ public class StringArrayUtils {
      * @return second to last element in specified array
      */ // TODO
     public static String getSecondToLastElement(String[] array) {
-        return null;
+
+        String secondToLast  = array[array.length - 2];
+
+        return secondToLast;
     }
 
     /**
@@ -42,6 +50,14 @@ public class StringArrayUtils {
      * @return true if the array contains the specified `value`
      */ // TODO
     public static boolean contains(String[] array, String value) {
+
+        for(String w: array)
+        {
+            if(w==value)
+            {
+                return true;
+            }
+        }
         return false;
     }
 
@@ -50,7 +66,13 @@ public class StringArrayUtils {
      * @return an array with identical contents in reverse order
      */ // TODO
     public static String[] reverse(String[] array) {
-        return null;
+
+        String[] test = new String[array.length];
+       for(int i=array.length; i >0; i--)
+       {
+        test[i-1] = array[array.length-i];
+       }
+        return test;
     }
 
     /**
@@ -58,7 +80,18 @@ 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;
+
+        String[] reverse = new String[array.length];
+        for(int i=array.length; i>0; i--)
+        {
+            reverse[i-1] = array[array.length-1];
+        }
+        if(reverse.equals(array))
+        {
+            return false;
+        }
+
+        return true;
     }
 
     /**
@@ -66,7 +99,29 @@ 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 test = "abcdefghijklmnopqrstuvwxyz";
+        String keeper = "";
+        for(int i = 0; i<array.length; i++)
+        {
+            keeper+=array[i];//assign all values of array to string.
+        }
+
+        int measure = array.length;
+
+        for(int i=0; i< measure; i++)
+        {
+            char c = keeper.charAt(i);
+            String phrase = Character.toString(c).toLowerCase();
+            test = test.replaceAll(phrase,"");
+        }
+
+        if(test.equals(""))
+        {
+            return false;
+        }
+        return true;
+
     }
 
     /**
@@ -75,7 +130,16 @@ 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;
     }
 
     /**
@@ -84,7 +148,16 @@ public class StringArrayUtils {
      * @return array with identical contents excluding values of `value`
      */ // TODO
     public static String[] removeValue(String[] array, String valueToRemove) {
-        return null;
+        StringBuilder newValue = new StringBuilder();
+        for(int i=0; i<array.length; i++)
+        {
+            if(array[i]!=valueToRemove)
+            {
+                newValue.append(array[i] + " ");
+            }
+        }
+        return newValue.toString().split(" ");
+
     }
 
     /**
@@ -92,7 +165,18 @@ public class StringArrayUtils {
      * @return array of Strings with consecutive duplicates removes
      */ // TODO
     public static String[] removeConsecutiveDuplicates(String[] array) {
-        return null;
+        //String[] compare = new String[array.length];
+        StringBuilder builder = new StringBuilder();
+        builder.append(array[0]+" ");
+        for(int i=1; i < array.length; i++)
+        {
+            if(!array[i].equals(array[i-1]))
+            {
+                builder.append(array[i]+" ");
+            }
+
+        }
+            return builder.toString().split(" ");
     }
 
     /**
@@ -100,6 +184,9 @@ 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) {
+
+        //cant figure it out
+
         return null;
     }