frequent

Top K Frequent Elements

题目要求Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqueelements.Youralgorithm'stimecomplexi
weixin_34023863·2020-06-28 09:23

Top K Frequent Elements

TopKFrequentElements好久没刷题了,做了道之前做过的medium难度的题TopKFrequentElementsGivenanon-emptyarrayofintegers,returnthekmostfrequentelements.Example1:Input:nums=[1,1,1,2,2,3],k=2Output:[1,2]Example2:Input:nums=[1],
weixin_30311605·2020-06-27 15:44

Top K Frequent Elements

Datastructureused,hashtableandminheap.Ahashmaptosaveeveryelementalongwithitsfrequencyfortheinputdata.Aminheaptosavetopkmostfrequentmapentry,comparingbymap.valuethatisfrequency.Timecomplexity,O(nlogK).
再见小小ronnie·2020-06-27 00:41

checkio the most frequent weekdays

fromdatetimeimport*fromdatetimeimporttimedeltadefmost_frequent_days(year):a={"Monday":0
summerdj·2020-06-26 15:18

Frequent values

题意：给出n(n=L)ans=max(ans,query(L,R,i*2,l,mid));if(mid
snayf·2020-06-26 13:04

Top K Frequent Elements 解题报告

题目链接:https://leetcode.com/problems/top-k-frequent-elements/Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample
小榕流光·2020-06-24 23:38

Top K Frequent Elements (Medium)

题目描述：Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqueelements.Youralgorithm’stimecomplexitymustbebetterthanO(nlogn),wherenisthearray’ssi
Jacky_Lrd·2020-06-24 12:09

Top K Frequent Elements (C++程序实现，两种方案)

解题方案一：先对nums中的元素排序，然后将元素及元素出现的次数存入二元组vector>a;中，再次对a排序（pair第一个存nums[i]出现的次数，第二个存nums[i]），a中末尾的k个数对中的pair.second即为所求。classSolution{public:vectortopKFrequent(vector&nums,intk){vector>a;vector>::iterator
love密密·2020-06-23 22:10

Top K Frequent Elements 解题报告（Python & C++）

fuxuemingzhu个人博客：http://fuxuemingzhu.cn/目录题目描述解题方法解题方法字典优先级队列日期题目地址：https://leetcode.com/problems/top-k-frequent-elements
负雪明烛·2020-06-23 09:31

LeetCode--Python解析【Top K Frequent Elements】(347)

题目：方法：首先将nums遍历进字典之中键值为nums中的数字，value为数字出现的次数随后每次求字典中的最大元素的索引，将索引append进list中，并删除该元素重复k次，取出现次数最多的k个元素classSolution:deftopKFrequent(self,nums,k):""":typenums:List[int]:typek:int:rtype:List[int]"""dict1
zjrn·2020-06-22 09:31

Top K Frequent Elements

Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqueelements.Youralgorithm'stimecomplexitymu
TstsUgeg·2020-06-22 07:15

Top K Frequent Elements解题报告(python)

347.TopKFrequentElementsTopKFrequentElementspythonsolution题目描述Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.解析和LeetCode451.SortCharactersByFrequency属于一个问题//Anhighlightedblockfromcollec
orientliu96·2020-06-22 02:18

Top K Frequent Elements。

returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].原文：https://leetcode.com/problems/top-k-frequent-elements
繁城落叶·2020-06-22 00:33

Top K Frequent Elements-获得前K高次元素

347.TopKFrequentElementsGivenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqueelements.Youralg
Binbin_Sun·2020-06-21 17:49

Top K Frequent Elements

思路我的想法是用一张表来记录出现的数字及对应出现的次数。然后对所有数字的出现次数排名。然后出现排名前k的数字就是目标数字。提交代码classSolution{publicListtopKFrequent(int[]nums,intk){HashMapmap=newHashMapres=newArrayListentry:map.entrySet()){if(entry.getValue()==ra
AXIMI·2020-06-21 16:07

Top K Frequent Elements

Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqueelements.ouralgorithm'stimecomplexitymus
我是你的果果呀·2020-06-21 13:23

Top K Frequent Elements

题目：Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Example1:Input:nums=[1,1,1,2,2,3],k=2Output:[1,2]Example2:Input:nums=[1],k=1Output:[1]Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqu
每天开心成为别人的望尘莫及·2020-06-21 05:09

Lintcode550 Top K Frequent Words II 题解

【题目描述】Findtopkfrequentwordsinrealtimedatastream.ImplementthreemethodsforTopkClass:1.TopK(k).Theconstructor.2.add(word).Addanewword.3.topk().Getthecurrenttopkfrequentwords.Notice:Iftwowordshavethesamef
plai_d75a·2020-04-13 06:37

Most Frequent Subtree Sum

这道题没什么难度，我用的map，注意需要熟悉map建立、iterator遍历、map插入返回值等。我的做法/***Definitionforabinarytreenode.*structTreeNode{*intval;*TreeNode*left;*TreeNode*right;*TreeNode(intx):val(x),left(NULL),right(NULL){}*};*/classSo
殷水臣·2020-04-04 15:08

Top K Frequent Elements

347.TopKFrequentElements解题思路；O(n)hash，得到键值对因为频次小于n，建散列表，即新建大小为n+1的数组，数组下标为频次，数组内容为有相同频次的键值list，对散列表按下标由大到小遍历，找出k个键值O(n*log(n-k))hashmap新建大小为n-k的最大堆，遍历，频次大于堆顶的保存到返回列表，频次小于堆顶的入堆，最后最小堆保存的是出现频次最低的n-k个，被“舍
顶儿响叮当·2020-03-25 03:11

线性代数和概率论——机器学习基础

）内积空间（innerproductspace）正交基（orthogonalbasis）标准正交基（orthonormalbasis）线性变换（linearmapping）二、概率论两大学派频率学派（Frequent
雪山飞猪·2020-03-24 11:00

LeetCode 347 [Top K Frequent Elements]

原题给定一个数组，返回其出现次数最多的k个元素，时间复杂度优于O(nlogn)样例给出[1,1,1,2,2,3]和k=2,返回[1,2]解题思路首先使用hashtable统计元素的频率建立一个长度为k的最小堆，因为堆顶最小，每次和堆顶元素作比较，大于堆顶就踢出堆顶元素并把当前元素加入堆中完整代码importQueueclassSolution(object):deftopKFrequent(sel
Jason_Yuan·2020-03-22 16:39

Top K Frequent Elements

DescriptionGivenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].**Note:**Youmayassumekisalwaysvalid,1≤k≤numberofuniqueelements.Youralgorithm'st
Nancyberry·2020-03-22 11:51

Most Frequent Subtree Sum

Giventherootofatree,youareaskedtofindthemostfrequentsubtreesum.Thesubtreesumofanodeisdefinedasthesumofallthenodevaluesformedbythesubtreerootedatthatnode(includingthenodeitself).Sowhatisthemostfrequent
sherwin29·2020-03-18 15:10

基础统计学(5)概率

(风险),likelihood(可能性)描述可变性程度(degreesofvariability)的词有:rarely(难得),seldom(很少),sometimes(有时),common(通常),frequent
Best_Scenery·2020-03-18 08:39

Top K Frequent Words

DescriptionGivenanon-emptylistofwords,returnthekmostfrequentelements.Youranswershouldbesortedbyfrequencyfromhighesttolowest.Iftwowordshavethesamefrequency,thenthewordwiththeloweralphabeticalordercomes
Nancyberry·2020-03-13 09:06

Top K Frequent Elements 笔记

Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqueelements.Youralgorithm'stimecomplexitymu
赵智雄·2020-03-12 06:18

Top K Frequent Elements

问题描述Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Example1:Input:nums=[1,1,1,2,2,3],k=2Output:[1,2]Example2:Input:nums=[1],k=1Output:[1]Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniq
JERORO_·2020-03-11 19:33

Most Frequent Subtree Sum

问题：Giventherootofatree,youareaskedtofindthemostfrequentsubtreesum.Thesubtreesumofanodeisdefinedasthesumofallthenodevaluesformedbythesubtreerootedatthatnode(includingthenodeitself).Sowhatisthemostfrequ
Cloudox_·2020-03-09 06:09

最常使用的K个单词II · Top K Frequent Words II

importjava.util.NavigableSet;publicclassTopK{privateMapwords=null;privateNavigableSettopk=null;privateintk;privateComparatormyComparator=newComparator(){publicintcompare(Stringleft,Stringright){if(lef
6默默Welsh·2020-03-07 02:12

教练关键技术之反馈技能

反馈技能的点滴FAST原则，Frequent，Accurate，Specific，Timely不要讲那些别人无法改变的，而侧重于别人可以改变的Amplifier，积极的反馈可以鼓励其重复行为不要but，
孔大千·2020-03-01 03:36

DummyClassifier

Dummy分类器完全忽略输入数据，scikit-learn中常用的DummyClassifier类型：most_frequent:预测值是出现频率最高的类别stratified:根据训练集中的频率分布给出随机预测
crazysheng·2020-02-27 21:45

LeetCode 347: 前 K 个高频元素 Top K Frequent Elements

题目:给定一个非空的整数数组，返回其中出现频率前K高的元素。Givenanon-emptyarrayofintegers,returntheKmostfrequentelements.示例1:输入:nums=[1,1,1,2,2,3],k=2输出:[1,2]示例2:输入:nums=[1],k=1输出:[1]说明：你可以假设给定的k总是合理的，且1≤k≤数组中不相同的元素的个数。你的算法的时间复杂度
爱写Bug·2020-02-25 02:08

最高频的K个单词

http://www.lintcode.com/zh-cn/problem/top-k-frequent-words/importjava.util.ArrayList;importjava.util.Collections
天街孤独·2020-02-20 21:37

最常使用的k个单词(Map Reduce)

http://www.lintcode.com/zh-cn/problem/top-k-frequent-words-map-reduce/importjava.util.ArrayList;importjava.util.Collections
天街孤独·2020-02-16 08:51

Top K Frequent Elements

Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Example1:Input:nums=[1,1,1,2,2,3],k=2Output:[1,2]Example2:Input:nums=[1],k=1Output:[1]classSolution{publicListtopKFrequent(int[]nums,intk)
xuan_abc·2020-02-15 23:00

Top K Frequent Elements

Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].Note:Youmayassumekisalwaysvalid,1?k?numberofuniqueelements.Youralgorithm'stimecomplexitymu
Jeanz·2020-02-15 16:52

Leetcode 347 Top K Frequent Elements

上一篇leetcode专题，通过一道算法题，疏导了一下快速排序算法的知识点，今天根据leetcode的347整理一下桶排序的算法思路。正文开始题目：Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].解题思路：这道题是根据给定的数组
蔺相如如·2020-02-08 17:41

Top K Frequent Elements

Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Example1:Input:nums=[1,1,1,2,2,3],k=2Output:[1,2]Example2:Input:nums=[1],k=1Output:[1]Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqueel
强威·2020-02-06 13:00

Top K Frequent Elements

Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqueelements.Youralgorithm'stimecomplexitymu
exialym·2020-01-02 08:14

Top K Frequent Elements

Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].**Note:**Youmayassumekisalwaysvalid,1≤k≤numberofuniqueelements.Youralgorithm'stimecomplexi
Eazow·2019-12-29 09:48

Top K Frequent Words

functionNode(){this.endCount=0this.word=''this.children={}}classTire{constructor(){this.root=newNode()}addWord(word){varnode=this.root;for(letnextofword){if(!node.children[next]){node.children[next]=n
司徒正美·2019-12-28 22:00

LeetCode算法题——Top K Frequent Words

题目概述Givenanon-emptylistofwords,returnthekmostfrequentelements.Youranswershouldbesortedbyfrequencyfromhighesttolowest.Iftwowordshavethesamefrequency,thenthewordwiththeloweralphabeticalordercomesfirst.I
颜ly·2019-12-27 05:50

Top K Frequent Elements

Algorithmswillalwaysmatter.的确，无论现在的计算能力如何提高，人们总会发现立即会有更多的数据需要处理。依然是leetcode上的题目：Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].Note:**You
M23·2019-12-19 01:16

Top K Frequent Words

1、题目链接https://leetcode-cn.com/problems/top-k-frequent-words/2、解题思路这道题的意思是说给你一个字符串数组，让你找出出现频率（出现次数）最高的前
24K纯帅豆·2019-12-15 00:40

Top K Frequent Elements

Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqueelements.Youralgorithm'stimecomplexitymu
sherwin29·2019-12-01 18:32

[LeetCode 347] Top K Frequent Elements (Medium)

Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Example1:Input:nums=[1,1,1,2,2,3],k=2Output:[1,2]Example2:Input:nums=[1],k=1Output:[1]Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqueel
蓝眼睛灰·2019-12-01 16:28

Most Frequent Subtree Sum

题目Giventherootofatree,youareaskedtofindthemostfrequentsubtreesum.Thesubtreesumofanodeisdefinedasthesumofallthenodevaluesformedbythesubtreerootedatthatnode(includingthenodeitself).Sowhatisthemostfreque
BLUE_fdf9·2019-11-30 14:23

Most Frequent Subtree Sum

题目要求Giventherootofatree,youareaskedtofindthemostfrequentsubtreesum.Thesubtreesumofanodeisdefinedasthesumofallthenodevaluesformedbythesubtreerootedatthatnode(includingthenodeitself).Sowhatisthemostfreq
raledong·2019-11-16 00:20

Top K Frequent Elements

问题：Givenanon-emptyarrayofintegers,returnthekmostfrequentelements.Forexample,Given[1,1,1,2,2,3]andk=2,return[1,2].Note:Youmayassumekisalwaysvalid,1≤k≤numberofuniqueelements.Youralgorithm'stimecomplexit
Cloudox_·2019-11-04 23:48
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