1.for standard table, it must be sorted by search key. 2.for sorted table , binary search is used automatically when searching with/include table key.  Note:with a binary search (addition BINARY SEARCH is used for standard tables, automatically for s…

Read Table 的语法很多,这里说一种特殊情况,Read Table 中查询的时候对标准内表经常有一种二分优化查找,用Binary search的时候首先必须要有查询条件:但如果查询条件满足的项目不至一条时,这时得到的是这些数据中索引排在最前面的数据: 如: 001   0001   20100101 001   0001  20100103 001    0001  20100105 ' col2 = ' BINARY SEARCH. 这时得到的是第一条,001 0001 2010010…

今天在复习Arrays and String 时看到一个很有趣的问题.希望跟大家分享一下. Implement the hash table using array / binary search tree 1.  Using Array/LinkedList: 1) key需要通过hash 来得到array中的index 2) array的每一位都是放着一个list 3) 需要自己定义一个class,list 由这个class 类型组成 4) 要考虑到万一hashvalue 范围很大,需要把t…

Priority Queue 类似一个Queue,但是按照priority的大小顺序来出队 一般存在两种方式来实施 排序法(ordered),在元素入队时即进行排序,这样插入操作为O(N),但出队为O(1) 不排序法(unordered),元素直接插入到后面,出队时先排序后提取,插入操作为O(1),出队为O(N) 采用二叉树 用队列模拟二叉树,root为a[1],子元素为a[2k]或a[2k+1] 父元素总是比子元素要大,提取max为a[1] 不符合规则的子元素(其value比父元素大)可以不断…

Sept. 22, 2015 学一道算法题, 经常回顾一下. 第二次重温, 决定增加一些图片, 帮助自己记忆. 在网上找他人的资料, 不如自己动手. 把从底向上树的算法搞通俗一些. 先做一个例子: 9/22/2015 Go over one example to build some muscle memory about this bottom up, O(1) solution to find the root node in subtree function. Sorted List: 1…

Method for balancing a binary search tree. A computer implemented method for balancing a binary search tree includes locating a node in a binary search tree, determining whether a depth of the located node is greater than a threshold, and performing…

相应POJ 题目:点击打开链接 Binary Search Heap Construction Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 9075   Accepted: 2566 Description Read the statement of problem G for the definitions concerning trees. In the following we define the basic…

先上题目: Binary Search Heap Construction Time Limit: 5 Seconds      Memory Limit: 32768 KB Read the statement of problem G for the definitions concerning trees. In the following we define the basic terminology of heaps. A heap is a tree whose internal n…

A binary search tree is provided for efficiently organizing values for a set of items, even when values are duplicated. In generating the binary search tree, the value of each item in a set of values is determined. If a particular value is unique and…

问题 该问题的实际应用 Suppose that we are designing a program to translate text from English to French. For each occurrence of each English word in the text, we need to look up its French equivalent. We could perform these lookup operations by building a binar…