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图的遍历之广度优先搜索(Breadth First Search)
描述广度优先搜索算法(Breadth First Search)与树的层序遍历(level-order traversal)类似,基本思想是思想是: 从图中某顶点v出发,访问v之后,并将其访问标志置为已被访问,即visited[i]=1; 依次访问v的各个未曾访问过的邻接点; 分别从这些邻接点出发依次访问它们的邻接点,并使得“先被访问的顶点的邻接点先于后被访问的顶点的邻接点被访问,直至图中所有已被访...
分类:其他好文   时间:2015-04-17 22:22:50    阅读次数:157
leetcode_103题——Binary Tree Zigzag Level Order Traversal(广度优先搜索,队列queue,栈stack)
Binary Tree Zigzag Level Order TraversalTotal Accepted:31183Total Submissions:117840My SubmissionsQuestionSolutionGiven a binary tree, return thezigza...
分类:其他好文   时间:2015-04-17 21:53:46    阅读次数:123
数据库子查询
子查询 需要特别指出的是,子查询的SELECT语句不能使用ORDER BY子句,ORDER BY子句只能对最终结果排序。 相关子查询...
分类:数据库   时间:2015-04-17 20:38:04    阅读次数:211
LeetCode --- 109. Convert Sorted List to Binary Search Tree
题目链接:Convert Sorted List to Binary Search Tree Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. 这道题的要求是将有序链表转化成高度平衡的二叉搜索树(BST)。 1. 利...
分类:其他好文   时间:2015-04-17 18:16:32    阅读次数:165
LeetCode --- 107. Binary Tree Level Order Traversal II
题目链接:Binary Tree Level Order Traversal II Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root). For exam...
分类:其他好文   时间:2015-04-17 18:16:21    阅读次数:176
LeetCode --- 108. Convert Sorted Array to Binary Search Tree
题目链接:Convert Sorted Array to Binary Search Tree Given an array where elements are sorted in ascending order, convert it to a height balanced BST. 这道题的要求是将有序数组转化成高度平衡的二叉搜索树(BST)。 由于数组有序,因此相当于二叉搜索树...
分类:其他好文   时间:2015-04-17 18:15:21    阅读次数:187
27. Remove Element
题目:Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn't ...
分类:其他好文   时间:2015-04-17 17:13:13    阅读次数:115
sql-表值函数tvf
带有参数的视图 create function fn_fenye (@count as int,@page as int) returns table as return select * from (select row_number() over (order by id)as num...
分类:数据库   时间:2015-04-17 15:12:52    阅读次数:173
SqlServer的递归查询 也就是 with cte查询
表结构表数据SQL如下with lmenu as( select name,id,1 as lv,cast(Name as nvarchar(max)) as name1, cast(ROW_NUMBER()over(order by getdate()) as nvarchar(10)) as o...
分类:数据库   时间:2015-04-17 13:24:35    阅读次数:161
.net 事务处理
方法1:直接写入到sql 中在存储过程中使用 BEGIN TRANS, COMMIT TRANS, ROLLBACK TRANS 实现begin transdeclare @orderDetailsError int,@procuntError intdelete from [order detai...
分类:Web程序   时间:2015-04-17 11:07:57    阅读次数:198
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