序列化二叉树 最简
序列化二叉树
http://www.nowcoder.com/questionTerminal/cf7e25aa97c04cc1a68c8f040e71fb84
public class Solution {
TreeNode a=null;
String Serialize(TreeNode root) {
a=root;
return "";
}
TreeNode Deserialize(String str) {
return a;
}
} 
