Given preorder and inorder traversal of a tree, construct the binary tree.Note:You may assume that duplicates do not exist in the tree.解题思路一：preorder[...
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编程语言 时间：
2015-05-23 11:11:46
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129
Given a binary tree, find its maximum depth.The maximum depth is the number of nodes along the longest path from the root node down to the farthest le...
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编程语言 时间：
2015-05-23 10:03:37
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114
Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and ...
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编程语言 时间：
2015-05-23 10:02:04
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170
Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example:Given binary tree {3...
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编程语言 时间：
2015-05-23 09:55:21
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126
SQL> select * from v$version where rownum=1;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Prod...
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其他好文 时间：
2015-05-23 08:51:54
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176
Write a SQL query to get the nth highest salary from the Employee table.
+----+--------+
| Id | Salary |
+----+--------+
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
+----+--------+
For exampl...
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数据库 时间：
2015-05-23 06:31:23
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173
from flask import Flaskfrom flask.ext.sqlalchemy import SQLAlchemyfrom flask.ext.migrate import Migrate, MigrateCommandfrom flask.ext.script import Ma...
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数据库 时间：
2015-05-23 01:11:20
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224
select to_number(to_char(sysdate,'yyyy')) from dual;或者可以直接使用Oracle提供的 Extract 函数select sysdate from dual; --获得当前系统时间
select extract(year from sysdate) from dual; --获得系统当前年
select extract(month from sy...
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数据库 时间：
2015-05-23 00:10:05
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246
There are n coins in a line. Two players take turns to take a coin from one of the ends of the line until there are no more coins left. The player with the larger amount of money wins.
Could you pl...
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其他好文 时间：
2015-05-23 00:02:42
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646
--Oracle trunc()函数的用法
/**************日期********************/
1.select trunc(sysdate) from dual --2011-3-18
今天的日期为2011-3-18
2.select trunc(sysdate, 'mm') from dual --2011-3-1
返回当月第一天....
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数据库 时间：
2015-05-22 22:35:57
阅读次数：
261
