Givenanarrayofintegers,everyelementappears#twiceexceptforone.Findthatsingleone.classSolution(object):defsingleNumber(self,nums):""":typenums:List[int]:rtype:int...

 demo1importheapqnums=[1,8,2,23,7,-4,18,23,42,37,2]print(heapq.nlargest(3,nums))#Prints[42,37,23]print(heapq.nsmallest(3,nums))#Prints[-4,1,2]输出：[42,37,23]...

转自：https://blog.csdn.net/every__day/article/details/90763607《数据结构与算法之美》前面讲过MySQL数据库索引实现原理，底层是依赖B+树这种数据结构来实现的。那类似Redisp这要的Key-Value数据库中的索引，又是怎么实现的呢?底层依赖的又是什么数据结构...

 definterpolation_search(data,val):low=0high=len(data)-1print('查找过程中......')whilelow<=highandval!=-1:mid=low+int((val-data[low])*(high-low)/(data[high]-...

 importrandomval=0data=[5,6,7,8,9]whileval!=-1:find=0val=int(input('请输入查找键值(1-9)，输入-1离开：'))foriindata:ifi==val:print('在第%3d个位置找到键值[%3d]'%(i+1,i))find+=1iff...

 classpy_solution:deftwoSum(self,nums,target):lookup={}fori,numinenumerate(nums):iftarget-numinlookup:return(lookup[target-num]+1,i+1)lookup[num]=i#{10:2,2...

 importrandomINDEXBOX=7#哈希表元素个数MAXNUM=13#数据个数classNode:#声明链表结构def__init__(self,val):self.val=valself.next=Noneglobalindextableindextable=[Node]*INDEXBOX#声明...

 #createatupletuplex=tuple("indextuple")print(tuplex)#getindexofthefirstitemwhosevalueispassedasparameterindex=tuplex.index("p")print(index)#definetheindex...

 #include<iostream>//std::cout#include<algorithm>//std::find_if_not#include<array>//std::arrayusingnamespacestd;intmain(){array<int,5&...

 #include<iostream>//std::cout#include<algorithm>//std::find_if#include<vector>//std::vectorusingnamespacestd;boolIsOdd(inti){return((i%2...

 #include<iostream>//cout#include<algorithm>//find_end#include<vector>//vectorusingnamespacestd;boolmyfunction(inti,intj){return(i==j);}i...

  #include<iostream>//cout#include<algorithm>//find#include<vector>//vector#include<typeinfo>usingnamespacestd;intmain(){//usi...

 #include<iostream>//cout#include<algorithm>//binary_search,sort#include<vector>//vectorusingnamespacestd;boolmyfunction(inti,intj){retur...

 defbinary_search(lis,key):low=0high=len(lis)-1time=0whilelow<=high:time+=1mid=int((low+high)/2)ifkey<lis[mid]:high=mid-1elifkey>lis[mid]:low=mid+...

 defsequential_search(lis,key):length=len(lis)foriinrange(length):iflis[i]==key:returnireturnFalseLIST=[1,5,8,123,22,54,7,99,300,222]result=sequential_sear...