给部分方法添加有界通配符。

shengshijun · shengshijun · commit d70b5e9d819c · 2015-02-28T21:41:00.000+08:00
diff --git a/src/main/java/ssj/algorithm/SearchTree.java b/src/main/java/ssj/algorithm/SearchTree.java
@@ -17,6 +17,13 @@ default void addAll(Iterable<? extends T> iter) {
         }
     }
 
+    default void deleteAll(Iterable<? extends T> iter) {
+        Preconditions.checkNotNull(iter);
+        for (T ele : iter) {
+            delete(ele);
+        }
+    }
+
     int size();
 
     Iterator<T> preIterator();
diff --git a/src/main/java/ssj/algorithm/collections/AVLTree.java b/src/main/java/ssj/algorithm/collections/AVLTree.java
@@ -203,7 +203,7 @@ private int pathLength(Node node) {
         return result;
     }
 
-    private Node getCommonNode(Stack<?extends Node> one, Stack<? extends Node> other) {
+    private Node getCommonNode(Stack<? extends Node> one, Stack<? extends Node> other) {
         Preconditions.checkNotNull(one);
         Preconditions.checkNotNull(other);
         Preconditions.checkArgument(!one.equals(other));
@@ -228,7 +228,7 @@ private Stack<Node> getNodePath(T ele) {
         return stack;
     }
 
-    private boolean getNodePathCore(Node start, T ele, Stack<Node> path_stack) {
+    private boolean getNodePathCore(Node start, T ele, Stack<? super Node> path_stack) {
         Preconditions.checkNotNull(ele);
         Preconditions.checkNotNull(path_stack);
         if (start == null) {

Original file line number	Diff line number	Diff line change
`@@ -17,6 +17,13 @@ default void addAll(Iterable<? extends T> iter) {`
`17`	`17`	`}`
`18`	`18`	`}`
`19`	`19`
	`20`	`+ default void deleteAll(Iterable<? extends T> iter) {`
	`21`	`+ Preconditions.checkNotNull(iter);`
	`22`	`+ for (T ele : iter) {`
	`23`	`+ delete(ele);`
	`24`	`+ }`
	`25`	`+ }`
	`26`	`+`
`20`	`27`	`int size();`
`21`	`28`
`22`	`29`	`Iterator<T> preIterator();`