Loser tree in Python | Christan Christens

I am taking an Advanced Data Structures and Algorithms class with Dr. Sahni at UF. I used a data structure discussed in this class as an opportunity to learn Python a little better. I implemented the loser tree. The loser tree is a complete binary tree with n external nodes and n-1 internal nodes. The root of the tree has the overall winner. The loser tree is a more efficient version of a winner tree which are both types of Tournament Trees. In the winner tree the winner of each competition is inside the nodes, however it is more efficient to keep the loser of the competitions in side the nodes and bubble the winner up the tree.

The loser tree has applications in areas such as Run Generations during external sorts, Bin-Packing Problems (Truck Loading), and others.

I am not yet sure of how to transfer my c++ knowledge of pointer to Python, so I used an array representation of the binary tree to keep track of the nodes. If anybody knows how I could implement a tree with pointers, I would love to know.

In anycase, below is my code. It isnt great code, and any suggestions would be great! Thanks to Yet Another Coding Blog for the code highlighting tip.

Loser tree in Python | Christan Christens的更多相关文章

  1. leetcode:Maximum Depth of Binary Tree【Python版】

    # Definition for a binary tree node # class TreeNode: # def __init__(self, x): # self.val = x # self ...

  2. 【LeetCode】572. 另一个树的子树 Subtree of Another Tree（Python & Java）

    作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 方法一:先序遍历 方法二:DFS + DFS 方法三 ...

  3. leetcode Binary Search Tree Iterator python

    # Definition for a binary tree node # class TreeNode(object): # def __init__(self, x): # self.val = ...

  4. leetcode Binary Tree Paths python

    # Definition for a binary tree node. # class TreeNode(object): # def __init__(self, x): # self.val = ...

  5. leetcode:Minimum Depth of Binary Tree【Python版】

    1.类中递归调用添加self: 2.root为None,返回0 3.root不为None,root左右孩子为None,返回1 4.返回l和r最小深度,l和r初始为极大值: # Definition f ...

  6. leetcode:Same Tree【Python版】

    1.p或q为None的情况用开始的两个if语句进行判断: 2.类中递归调用函数需要使用self进行调用: 3.代码很简洁,最后几行通过同时为None和同时非None的条件进行判断: # Definit ...

  7. leetcode:Symmetric Tree【Python版】

    #error caused by:#1:{} 没有考虑None输入#2:{1,2,2} 没有控制h和t#3:{4,-57,-57,#,67,67,#,#,-97,-97} 没有考虑负号,将s从str变 ...

  8. leetcode 【 Convert Sorted List to Binary Search Tree 】python 实现

    题目: Given a singly linked list where elements are sorted in ascending order, convert it to a height ...

  9. 决策树(Decision Tree)算法 python简单实现

    "" """ import numpy as np from math import log import operator import json ...

随机推荐

  1. 存几个html画图的网站

    http://jvectormap.com/ http://julying.com/lab/raphael-js/docs/#Paper.path http://www.highcharts.com/ ...

  2. jQuery 删除HTML元�

    jQuery使用以下两个方法来删除或是清空某个HTML元素. remove() – 删除指定的元素(包含其子元素) empty() – 清空指定元素的子元素 比如: <!DOCTYPE html ...

  3. UVA 10815 Andy&#39;s First Dictionary（字符处理）

    Andy, 8, has a dream - he wants to produce his very own dictionary. This is not an easy task for him ...

  4. c语言:链表排序, 链表反转

    下面将实现链表排序的排序和遍历显示功能: 所定义的链表结构如下: head -> p1 -> p2 ->p3 ->....->pn; head的本身不作为数据节点,hea ...

  5. 《火球——UML大战需求分析》(第1章 大话UML)——1.5 小结和练习

    说明: <火球——UML大战需求分析>是我撰写的一本关于需求分析及UML方面的书,我将会在CSDN上为大家分享前面几章的内容,总字数在几万以上,图片有数十张.欢迎你按文章的序号顺序阅读,谢 ...

  6. 基于visual Studio2013解决C语言竞赛题之1049抓牌排序

       题目 解决代码及点评 /* 功能:插入排序.许多玩牌的人是以这样的方式来对他们手中的牌进行排序的: 设手中原有3张牌已排好序,抓1张新牌,若这张新牌的次序在原来的第2张牌之后,第 3 ...

  7. 基于visual Studio2013解决C语言竞赛题之1036递归求值

          题目 解决代码及点评 /* 36.已知有如下递推公式 求该数列的前n项.不允许使用数组. */ float fp50036(int n,float x,float ...

  8. php连接oracle及简单操作

    使你的php支持oracle,按照以下步骤即可: 1.安装php环境,找一下appserv或者xampp,一键安装,很方便 2.把php的ext目录下的php_oci8.dll拷到system32目录 ...

  9. Hadoop基于文件的数据结构及实例

    基于文件的数据结构 两种文件格式: 1.SequenceFile 2.MapFile SequenceFile 1.SequenceFile文件是Hadoop用来存储二进制形式的<key,val ...

  10. G - Self Numbers(2.2.1)

    G - Self Numbers(2.2.1) Time Limit:1000MS     Memory Limit:10000KB     64bit IO Format:%I64d & % ...