fixed warnings

src/zutil/algo/path/DepthFirstSearch.java

@@ -2,7 +2,6 @@ package zutil.algo.path;
 
 import java.util.HashSet;
 import java.util.LinkedList;
-import java.util.Queue;
 
 /**
  * A PathFinder class implemented with DFS

src/zutil/algo/search/QuickSelect.java

@@ -10,7 +10,7 @@ import zutil.algo.sort.sortable.SortableDataList;
  * @author Ziver
  *
  */
-@SuppressWarnings("unchecked")
+@SuppressWarnings({ "unchecked", "rawtypes" })
 public class QuickSelect {
 	
 	public static Object find(SortableDataList list, int k){

src/zutil/algo/sort/MergeSort.java

@@ -110,7 +110,7 @@ public class MergeSort{
 	 * @param stop is the end of the second sublist
 	 * @param pivot is the end index for the first list and the beginning of the second.
 	 */
-	@SuppressWarnings("unchecked")
+	@SuppressWarnings({ "unchecked", "rawtypes" })
 	protected static <T> void merge(SortableDataList<T> list, int start, int stop, int pivot){
 		int length = pivot-start;
 		Object[] tmp = new Object[stop-start];