Adding in more work with Data Structures

src/JavaMapAndDictionary.java

@@ -0,0 +1,35 @@
+import java.util.*;
+
+public class JavaMapAndDictionary {
+    public static void main(String[] args) {
+        // Map Example
+        double[] mapGPA = new double[] { 4.0, 3.0, 2.0, 1.0, 0.0 };
+        char[] mapLetter = new char[] { 'A', 'B', 'C', 'D', 'F' };
+        Map<Character, Double> map = new HashMap<Character, Double>();
+
+        for (int i = 0; i < mapGPA.length; i++) {
+            map.put(mapLetter[i], mapGPA[i]); // Insert key/value into map
+        }
+
+        for (Character key : map.keySet()) {
+            System.out.println(key + " " + map.get(key));
+        }
+
+        // END: Map Example
+        System.out.println();
+        // Dictionary Example
+        double[] dictGPA = new double[] { 4.0, 3.0, 2.0, 1.0, 0.0 };
+        char[] dictLetter = new char[] { 'A', 'B', 'C', 'D', 'F' };
+        Dictionary<Character, Double> dictionary = new Hashtable<Character, Double>();
+
+        for (int i = 0; i < dictGPA.length; i++) {
+            dictionary.put(dictLetter[i], dictGPA[i]); // Insert key/value into map
+        }
+
+        for (Enumeration<Character> keys = dictionary.keys(); keys.hasMoreElements(); ) {
+            char keyVal = keys.nextElement();
+            System.out.println(keyVal + " " + dictionary.get(keyVal));
+        }
+        // END: Dictionary Example
+    }
+}