diff --git a/vtm/src/org/oscim/utils/ArrayUtils.java b/vtm/src/org/oscim/utils/ArrayUtils.java
new file mode 100644
index 00000000..c4c37bd2
--- /dev/null
+++ b/vtm/src/org/oscim/utils/ArrayUtils.java
@@ -0,0 +1,48 @@
+package org.oscim.utils;
+
+public class ArrayUtils {
+
+	public static <T> void reverse(T[] data) {
+		reverse(data, 0, data.length);
+	}
+
+	public static <T> void reverse(T[] data, int left, int right) {
+		right--;
+
+		while (left < right) {
+			T tmp = data[left];
+			data[left] = data[right];
+			data[right] = tmp;
+
+			left++;
+			right--;
+		}
+	}
+
+	public static void reverse(short[] data, int left, int right, int stride) {
+		right -= stride;
+
+		while (left < right) {
+			for (int i = 0; i < stride; i++) {
+				short tmp = data[left + i];
+				data[left + i] = data[right + i];
+				data[right + i] = tmp;
+			}
+			left += stride;
+			right -= stride;
+		}
+	}
+
+	public static void reverse(byte[] data, int left, int right) {
+		right -= 1;
+
+		while (left < right) {
+			byte tmp = data[left];
+			data[left] = data[right];
+			data[right] = tmp;
+
+			left++;
+			right--;
+		}
+	}
+}