remove duplicates

1 files changed, 37 insertions, 0 deletions

diff --git a/src/semanticanalysis/Share.java b/src/semanticanalysis/Share.java
new file mode 100644
index 0000000..c1f03c2
--- /dev/null
+++ b/src/semanticanalysis/Share.java
@@ -0,0 +1,37 @@
+package semanticanalysis;
+
+import java.util.ArrayList;
+
+public class Share {
+
+    public static <T> ArrayList<T> removeDuplicates(ArrayList<T> list) {
+        ArrayList<T> newList = new ArrayList<T>();
+
+        for (T element : list) {
+            if (!customContains(newList, element)) {
+                newList.add(element);
+            }
+        }
+        return newList;
+    }
+
+    public static <T> boolean customContains(ArrayList<T> list, T e) {
+        String e1 = e.toString();
+        for (T element : list) {
+            String e2 = element.toString();
+            if (e2.equals(e1)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public static String getExtension(String fileName) {
+        int extensionIndex = fileName.lastIndexOf('.');
+        if (extensionIndex == -1) {
+            return fileName;
+        } else {
+            return fileName.substring(extensionIndex + 1);
+        }
+    }
+}