Added abstract class that should be used by Sorters

Author: olewehrmeyer

src/de/littlerolf/sav/data/BaseSorter.java

@@ -0,0 +1,21 @@
+package de.littlerolf.sav.data;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public abstract class BaseSorter {
+	
+	private List<HistoryItem> history = new ArrayList<HistoryItem>();
+
+	public abstract int[] sortArray(int[] values);
+	
+	public void saveHistory(int values[]) {
+		HistoryItem i = new HistoryItem();
+		i.values = values;
+		history.add(i);
+	}
+	
+	public List<HistoryItem> getHistory() {
+		return history;
+	}
+}