void addNum(int num) - Add a integer number from the data stream to the data structure. double findMedian() - Return the median of all elements so far. For example: addNum(1) addNum(2) findMedian() -> 1.5 addNum(3) findMedian() -> 2 用一个最大堆存放比中位数小(或等于)的元...
[2,3,4], the median is3 [2,3], the median is(2 + 3) / 2 = 2.5 Design a data structure that supports the following two operations: void addNum(int num) - Add a integer number from the data stream to the data structure. double findMedian() - Return the median of all elements...
* MedianFinder* obj = new MedianFinder(); * obj->addNum(num); * double param_2 = obj->findMedian();*/ Other Solutions, such as Bucket https://leetcode.com/problems/find-median-from-data-stream/solution/
MedianFinder():来初始化MedianFinder这个对象; void addNum(int num):来从数据流中加入一个整数到我们的数据结构中; double findMedian():返回我们迄今为止加入的所有数的中位数; 这道题目有许多思路: 通过简单排序,利用数学公式解 通过插入排序,利用数学公式解 利用heap解 最近我们在强化heap的练习,这里就是用h...
给你一个已经排序的数组,实现类文件中的两个函数,找出中位数。 二. 思路 利用优先队列实现。 代码: 方法一:(时间效率更好) class MedianFinder { Queue<Integer> q = new PriorityQueue(), z = q, t, Q = new PriorityQueue(Collections.reverseOrder()); /** initialize your data structure here. */...
LeetCode Top Interview Questions 295. Find Median from Data Stream (Java版; Hard) 题目描述 Median is the middle value in an ordered integer list. If the size of the list is even, there is no middle value. So the median is the mean of the two middle value. ...
https://leetcode.com/problems/find-median-from-data-stream/description/ 解题方法: 使用因为这个数据结构只需要找中位数,不需要pop,所以我们可以使用一个maxheap和一个minheap来储存数据。按照从小到大,maxheap存左半部分数据,minheap存右半部分数据。
classMedianFinder{public:/** initialize your data structure here. */MedianFinder(){}voidaddNum(intnum){small.push(num);//注意这里每个元素需要先入small再入large,否则可能导致大的在small,如1,2,3large.push(-small.top());small.pop();if(large.size()>small.size()){small.push(-large.top(...
文档标签: Find Mean Median Modal Class from Grouped Data查找均值中位数模态类从分组数据 系统标签: grouped modal median mean data 模态 Find Mean, Median, Modal Class from Grouped Data 16 8 9 4 0 Example1. ThenumberofgoalsscoredbyPremierLeagueteamsoveraweekendwas recordedinatable.Calculatethemeana...
This exploratory step should take multiple forms, from descriptive statistics to simple visualizations. For most tabular data sets, summary statistics, such as the mean, median, and standard deviation, along with some simple scatter plots or bar charts can give you an insightful glimpse at th...