问题 最优二叉搜索树(Optimal Binary Search Tree,Optimal BST)问题,形式化定义:给定一个n个不同关键字的已排序的序列K=<k1, k2, ..., kn>(k1<k2<...<kn),用这些关键字构造一棵二叉搜索树 —— 对每个关键
uva 10304 Optimal Binary Search Tree (区间DP) uva 10304 Optimal Binary Search Tree 题目大意:给出N个结点(已知每个结点的权值)来建树,建树时要满足以下规则:左子树的节点的值要全小于父节点,右子树的节点的值要全大于父节点。要求最后建出的树总权值最小。总权值=各结点乘以层数(从0层开始)之后相加的和。
二叉搜索树 二叉查找树(Binary Search Tree),(又:二叉搜索树,二叉排序树)它或者是一棵空树,或者是具有下列性质的二叉树: 若它的左子树不空,则左子树上所有结点的值均小于它的根结点的值; 若它的右子树不空,则右子树上所有结点的值均大于它的根结点的值; 它的左、右子树也分别为二叉排序树。 一、什么是最...
Itfocusonhowtoreducethecostofthesearchof theBST. Itmaynothavethelowestheight! Itneeds3tablestorecordprobabilities,cost,and root. 2.Premise Ithasnkeys(representationk 1 ,k 2 ,…,k n )insortedorder (sothatk 1 2 <… n ),andwewishtobuildabinary searchtreefromthesekeys.Foreachk i ,wehavea ...
Dynamic programming--optimal binary search tree key_probability = [-1, 0.15, 0.1, 0.05, 0.1, 0.2] virtual_key_probability = [0.05, 0.1, 0.05, 0.05, 0.05, 0.1] expect_cost = [[0] *10 for i in range(10)] probability_sum = [[0] *10 for i in range(10)]...
This paper presents an approach of generation of 3D parallel tiled code implementing an Optimal Binary Search Tree (OBST) algorithm. We demonstrate that the features of data dependences available in the code implementing Knuth's OBST algorithm allow us to generate only 2D tiled code. We suggest ...
a Binary Search Tree. */ public static int optimalSearchTreeDP(int[] keys, int[] freq, int n){ int[][] cost = new int[n][n]; /* Create an auxiliary 2D matrix to store results of subproblems */ /* cost[i][j] = Optimal cost of binary search tree that can be ...
VLSI implementation of Lempel-Ziv binary-tree search algorithm; Lempel-Ziv二叉树搜索算法的VLSI实现3) searching binary-tree 搜索二叉树4) binary search tree 二叉搜索树 例句>> 5) optimal binary tree 最优二叉树 1. Application of optimal binary tree in multi-branch program design; 最优二叉...
Vitaly Aksenov, Vincent Gramoli, Petr Kuznetsov, Anna Malova, and Srivatsan Ravi. A concurrency-optimal binary search tree. In European Conference on Parallel Processing (Euro-Par), pages 580-593. Springer, 2017.S. Nagaraj, "Optimal binary search trees," Theoretical Computer Sci- ence, vol. ...
A parallel and a distributed implementation for a very important problem in the searching theory, the optimal binary search tree (BST) problem, is presented and analyzed. Implemented as a VLSI array, the algorithm for building the optimal BST uses O(n) processors and has the parallel time comp...