//字符串varday="dd";switch(day){case"dd":x="dayit'sdd";break;case"ff":x="dayit'sff";break;default:x="dayisdefault";}输出"dayit'sdd" ...

 //获取星期//例子1varday=newDate().getDay();switch(day){case6:x="Todayit'sSaturday";break;case0:x="Todayit'sSunday";break;default:x="LookingforwardtotheWeekend";...

  报错如下：[WARN][WallTime:1555659671.447721]Couldnotprocessinboundconnection:Client[/rostopic_18439_1555659423249]wantstopic[/bp_update_feedback]tohaveda...

 证书不匹配问题1.对于python自带的urllib库 解决办法importsslssl.match_hostname=lambdacert,hostname:True2.对于requests库，解决办法requests.get(url='https://192.168.1.223',verify...

 在app中的build.gradle中加入如下代码，configurations{all*.excludegroup:'com.google.code.gson'all*.excludegroup:'com.squareup.okhttp3'all*.excludegroup:'com.squareup.o...

  遇到這個問題通常是IDE更新後，或是反覆使用AndroidStudio開啟其他專案所導致，解決方法其實非常簡單喔！ 点击  這個選項的功用是「清除IDE暫存並重啟」，沒錯，會出現上述情形的原因就是AndroidStudio本身的暫存檔出現異常所導致的，單純重開並沒有...

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

 Givenastring s consistsofupper/lower-casealphabetsandemptyspacecharacters '',returnthelengthoflastwordinthestring.Ifthelastworddoesnotexist...

 Givenanintegerarray nums,findthecontiguoussubarray (containingatleastonenumber)whichhasthelargestsumandreturnitssum.classSolution(object):defmax...

 Givenacollectionof distinct integers,returnallpossiblepermutations.classSolution(object):defpermute(self,nums):""":typenums:List[int]:rtype:List...

 classSolution(object):defdivide(self,dividend,divisor):""":typedividend:int:typedivisor:int:rtype:int"""ispositive=Trueifdividend>0anddivisor<0:ispo...

 #Definitionforsingly-linkedlist.#classListNode(object):#def__init__(self,x):#self.val=x#self.next=NoneclassSolution(object):defremoveNthFromEnd(self,head,...

 classSolution(object):deffourSum(self,nums,target):""":typenums:List[int]:typetarget:int:rtype:List[List[int]]"""l=len(nums)nums.sort()ifl<4:return[]re...

 classSolution(object):defletterCombinations(self,digits):""":typedigits:str:rtype:List[str]"""ifdigits=="":return[]nums_to_letters={2:"abc",3:"def",4:"ghi...

 client:#-*-coding:utf-8-*-importsockets=socket.socket(socket.AF_INET,socket.SOCK_STREAM)s.connect(('127.0.0.1',9999))print(s.recv(1024))fordatain['zhang',...