init

debugging/InvertedIndex.java

@@ -0,0 +1,52 @@
+import java.util.*;
+
+public class InvertedIndex {
+    public static void main(String[] args) {
+        List<String> docs = new ArrayList<>();
+        docs.add("Raiders of the Lost Ark");
+        docs.add("The Temple of Doom");
+        docs.add("The Last Crusade");
+        
+        Map<String, Set<String>> result = createIndex(docs);
+        System.out.println(docs);
+        System.out.println();
+        System.out.println(result);
+    }
+
+    // TODO: Write and document your createIndex method here
+
+    public static Map<String, Set<String>> createIndex(List<String> docs) {
+        Map<String, Set<String>> index = new TreeMap<>();
+        Set<String> uniqueWords = getUniqueWords(docs);
+
+        for (String uniqueWord : uniqueWords) {
+            index.put(uniqueWord.toLowerCase(), new HashSet<String>());
+        }
+
+        for (String word : index.keySet()) {
+            for (int i = 0; i < docs.size(); i++) {
+                Scanner wordScanner = new Scanner(docs.get(i));
+                while (wordScanner.hasNext()) {
+                    if (wordScanner.next().equalsIgnoreCase(word)) {
+                        index.get(word).add(docs.get(i));
+                    }
+                }
+            }
+        }
+        return index;
+    }
+
+    public static Set<String> getUniqueWords(List<String> docs) {
+        Set<String> uniqueWords = new HashSet<>();
+        for (String title : docs) {
+            Scanner titleScanner = new Scanner(title);
+            while (titleScanner.hasNext()) {
+                uniqueWords.add(titleScanner.next());
+            }
+            titleScanner.close();
+        }
+        return uniqueWords;
+    }
+
+    
+}