Added Array util class

src/zutil/ArrayUtil.java

@@ -0,0 +1,20 @@
+package zutil;
+
+/**
+ * A  utility class containing Array specific utility methods
+ */
+public class ArrayUtil {
+
+    /**
+     * Searches for a given object inside of an array.
+     * The method uses reference comparison or {@link #equals(Object)} to check for equality.
+     *
+     * @return True if the given Object is found inside the array, false otherwise.
+     */
+    public static <T> boolean contains(T[] array, T obj) {
+        for (final T element : array)
+            if (element == obj || obj != null && obj.equals(element))
+                return true;
+        return false;
+    }
+}