update

medium/450.delete-node-in-a-bst.go

@@ -0,0 +1,11 @@
+/**
+ * Definition for a binary tree node.
+ * type TreeNode struct {
+ *     Val int
+ *     Left *TreeNode
+ *     Right *TreeNode
+ * }
+ */
+func deleteNode(root *TreeNode, key int) *TreeNode {
+	
+}