--- a/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/store/impl/DefaultNodePath.java	Tue Jan 13 02:34:42 2015 +0900
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/store/impl/DefaultNodePath.java	Tue Feb 10 11:28:39 2015 +0900
@@ -87,7 +87,8 @@
 		});
 	}
 
-
+//PATHの一番後ろを取り除いたPATHを新しく作って返す
+// EXAMPLE <0,0,3> → <0,0> 
 	@Override
 	public NodePath tail() {
 		List<Integer> tail = path.reverse();
@@ -95,18 +96,4 @@
 		return new DefaultNodePath(tail);
 	}
 
-	@Override
-	public boolean compare(NodePath targetPath) {
-		
-		if (targetPath.size() < path.length())
-			return false;
-		
-		for (Integer currentNum : path) {
-			Pair<Integer, NodePath> currentTargetPathNumPair = targetPath.pop();
-			targetPath = currentTargetPathNumPair.right();
-			if (currentNum != currentTargetPathNumPair.left()) 
-				return false;
-		}
-		return true;
-	}
 }