应对谷歌烧脑招聘面试题-你够聪明吗

AreYOUcleverenoughtoanswerGoogle'stoughestinterviewquestions?应对谷歌烧脑聘请面试题你够聪慧吗Goingforajobinterviewisnerve-rackingatthebestoftimes,buttechgiantGooglehasbecomenotoriousforaskingfiendishlytoughquestions.即便是聘请高峰期，求职面试也会特别伤神费脑，然而科技巨头谷歌的面试题则因其奇葩刁钻而异样出名。Thecompanyusedtoaskhead-scratchingquestionssuchas'Howmanypianotunersarethereintheworld?'and'Howmanygolfballsdoesittaketofillaschoolbus?'.谷歌公司曾问过一些令人头痛不已的面试问题，例如，“世界上有多少位钢琴调音师？”以及“一辆校车里最多能塞多少颗高尔夫球？”。Butsomeoftheriddlesweresotoughtheyhavenowbeenbannedfromtheinterviewprocess.但因有些谜题太过于荒谬怪异，谷歌公司现在已不再将其纳入面试流程中。RecruiterImpactInterviewhavecompiledalistof140questionscandidateshavereportedbeingaskedatinterviewsforvariousrolesatGoogle,manyofwhichhavenowbeendroppedfromtheprocess.聘请面试小册子汇编140道题，依应聘人员所言，在谷歌面试中他们曾以各种角色回答过此类问题。目前其中的很多问题已从面试流程中剔除。Oneofthetoughteasersthatcandidatesusedtobeaskedwas:'Howmanypianotunersarethereintheentireworld?'应聘者们曾经回答过这样一个令人啼笑皆非的难题：“全世界有多少位钢琴调音师？”TheriddleisknownasaFermiproblem,namedafterthephysicistEnricoFermiwhowasknownforhisabilitytomakegoodcalculationswithverylittleinformationorevennone.这类谜题被称为“费米问题”，命名来自物理学家恩里科·费米，他之所以声名远扬是因为他能够在少量的给定信息甚至没有信息的状况下进行运算。Itspurposeistotestacandidatesapproximationskillsaswellastheirabilityatdimensionalanalysis.费米问题意在考察应聘者的估算实力以及量纲分析实力。Thepuzzleissolvedbymultiplyingaseriesofestimatestogettotherightanswer.Soacandidatewouldhavetoestimatefactorssuchashowmanyhouseholdshaveapiano,howoftentheyaretunedtofigureouthowmanypianotuningstakeplaceayear.解决费米问题的方法在于通过一系列估算而无限接近正确答案。因此，应聘者须要考量一些因素，诸如：拥有钢琴的家庭户数，此类家庭进行钢琴调音的频次等，从而得出每年有多少次的钢琴调音。Theythenneedtocalculatetheaverageworkinghoursofapianotunersandthenumberofjobstheycarryout.随后，应聘者们须要估算出钢琴调音师的平均工作时长以及工作量。Thenumberofpianotuningsthattakeplaceperyeardividedbythenumberperyearperpianotunershouldyieldtheanswer.因此，用每年全部家庭须要进行钢琴调音的次数除以每年每位钢琴调音师的工作量，答案就此诞生。Googlecandidatesgoingforaroleasproductmanageralsousedtobeasked:'Howmanygolfballscanfitinaschoolbus?申请谷歌公司产品经理职位的应聘者也曾被问到：“一辆校车里能够容纳多少颗高尔夫球？”Tosolveitonemustcalculatethevolumeoftheaveragegolfballandthethevolumeoftheaverageschoolbus,takingintoaccountfactorsliketheseatsandotherfixturestakingupspace.为了解决这个问题，应聘者必需估算出一颗正常高尔夫球的体积以及一辆正常校车的体积，同时也需将校车内占据空间的座椅和其他固定装置的体积等因素考虑在内。Theansweristhevolumeofthebus,dividedbythevolumeoftheballs.这个答案就是校车容量除以高尔夫球体积所得的数字。Aswellasquestionsinvolvingcalculationandphysics,Googleusedtoaskwould-beemployeestosolvelogicpuzzles.谷歌公司的面试问题不仅提及数学运算与物理学方面，也曾让其潜在雇员们解决逻辑难题。Oneoftheriddleswas:'Everymaninavillageof100marriedcoupleshascheatedonhiswife.其中的一个谜题是：在一个村庄里，有100对已婚夫妇，每名男子都曾对自己的配偶不忠。'Everywifeinthevillageinstantlyknowswhenamanotherthanherhusbandhascheatedbutdoesnotknowwhenherownhusbandhas.一旦有男子在外偷吃，村庄里的妇人们便会立即得知，但是假如这名男子是自己的丈夫，妇人将不会得到消息。'Thevillagehasalawthatdoesnotallowforadultery.Anywifewhocanprovethatherhusbandisunfaithfulmustkillhimthatveryday.这个村庄的法律严禁婚外情。任何妇人一旦证明丈夫有婚外情，就必需当日杀了他。'Thewomenofthevillagewouldneverdisobeythislaw.Oneday,thequeenofthevillagevisitsandannouncesthatatleastonehusbandhasbeenunfaithful.Whathappens?'村里的妇人们从来没有违反过该法规。有一天，村庄里的女王来访并宣称村里至少有一名丈夫背着妻子有婚外情。接下来原委会发生什么？Althoughopinionvariesastothecorrectanswer,apopularsolutionistoassumethatallthecheatinghusbandswillbeexecuted100daysafterthequeen'sannouncement.尽管关于正确答案，众人各持己见，但仍存有一个广为流行的解答，即全部背情忘义的丈夫将会在女王宣布消息之后的第100天被执以死刑。Everywifeinthevillageinstantlyknowswhenamanotherthanherhusbandhascheated,soifthere'sonlyoneunfaithfulmanshewillknowit'sherhusbandandwillkillhimthatday.一旦有男子出轨，村庄里的全部妇人便会即刻得知消息，除非这名男子是自己的丈夫。因此，假如只有一个不忠的男子，那么妇人便得知此人就是自己的丈夫，便会在当日使其命丧黄泉。Bearinginmindthatthequeenhassaidthatatleastonemanhascheated,therecouldbemorethanasingleadulterer.我们必需记住女王提到，至少有一名男子背叛妻子，这也就意味着该数目可能大于等于一。Iftherearetwocheaters,98womenwillknowwhotheyare.Thenextdaywhenthewiveswhohavebeencheatedonseethatnobodyhasbeenexecutedtheywillrealisetheonlyexplanationisthattheirhusbandsaretheculprits,andwillkillthem.假如村里有两名男子背叛妻子，那便有98位妇人知道他们的身份。次日，他们的妻子没有发觉有人被处以死刑，那么妇人就会明白，唯一的可能就是自己丈夫，随后杀之。Bythatlogic,100cheatinghusbandswillbeexecutedonthe100thday,astheriddlestatesthateverymaninthevillagehascheatedonhiswife.依逻辑推断，那100名有婚外情的男子会在第100天时通通被处死，正如谜题所述，村庄里的每个男人都曾背叛过自己的妻子。Ariddleaboutpiratessoundscomplicatedbuttheanswerisinfactquitesimple.有一个关于海盗的谜题看似玄乎困难，但事实上答案特别简洁。You’rethecaptainofapirateship,andyourcrewgetstovoteonhowthegoldisdividedup.假设你是一艘海盗船的船长，你的船员们就如何安排黄金的问题进行投票。'Iffewerthanhalfofthepiratesagreewithyou,youdie.Howdoyourecommendapportioningthegoldinsuchawaythatyougetagoodshareofthebooty,butstillsurvive?假如你的安排方案得不到半数支持，你就会被杀死。在自己可以活命的前提下，你如何安排才能拿到最多的财宝？Thesolutionistoshare51percentofthetreasure.答案是分掉51%的黄金。Anotherlogicpuzzledcandidatesweregiventosolvewas:'Howmanytimesadaydothehandsofaclockoverlap?'“一天中，时钟的时针和分针会重合几次？”这是应聘者们被要求回答的又一个逻辑难题。Thehandsoverlaponceanhour,but11timesin12hoursand22timesinaday.Thisisbecausetheoverlapat12hasalread