2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Thaum 13th lub caij (tus nqi tseem ceeb) yuav los rau hauv Hashmap, nws yuav nce nws qhov loj los ntawm default 2 4=16 thoob rau 2 5=32 thoob. Lwm txoj hauv kev los xam qhov loj me: Thaum tus nqi thauj khoom sib piv (m / n) nce mus txog 0.75 ntawm lub sijhawm ntawd, hashmap nce nws lub peev xwm.
Yuav ua li cas thaum HashMap hloov pauv?
5 Teb. Lub neej ntawd Load Factor yog 0.75, i.e. 3/4, uas txhais tau hais tias lub rooj sab hauv hash yuav raug hloov pauv thaum 75 ntawm 100 qhov tseem ceeb tau ntxiv. FYI: resize tsuas yog hu ua ob zaug xwb. Ib zaug thaum thawj tus nqi ntxiv, thiab ib zaug thaum nws tau txais 75% tag nrho.
Puas yog HashMap loj cuam tshuam rau kev ua haujlwm ntawm HashMap?
Iteration tshaj sau cov views yuav tsum tau lub sij hawm proportional rau "muaj peev xwm" ntawm HashMap piv txwv (tus naj npawb ntawm thoob) ntxiv rau nws qhov loj me (tus naj npawb ntawm qhov tseem ceeb-tus nqi mappings). Yog li, nws tseem ceeb heev kom tsis txhob teeb tsa lub peev xwm pib siab dhau (lossis qhov khoom thauj khoom tsawg dhau) yog tias qhov ua tau zoo dua yog qhov tseem ceeb.
Dab tsi yog qhov loj me ntawm HashMap?
Lub peev xwm pib pib ntawm HashMap yog 2 4i.e 16. Lub peev xwm ntawm HashMap yog ob npaug txhua zaus nws ncav cuag threshold.
Puas yog HashMap kho qhov loj?
Fixed-Size: Qhov qhov siab tshaj ntawm cov khoom uas tuaj yeem ntxiv rau hauv hashmap yog kho los ntawm tus tsimthiab qhov loj ntawm lub hauv hashmap array kuj yog tsau. Qhov no txhais tau tias tsis muaj resizing lossis rehashing ntawm cov khoom.
Pom zoo:
Vim li cas cua txias thaum nws nce?
Vim li cas huab cua txias thaum nws nce hauv huab cua? … Raws li huab cua nce, nws nthuav vim huab cua siab txo nrog qhov nce siab. Thaum huab cua nthuav dav, nws txias adiabatically. Vim li cas cua txias thaum nws nce? cua kub nce.
Vim li cas qhov loj ntawm cov pob naphthalene txo yog tias nws khaws cia hauv qhov qhib?
Kev daws: Qhov loj ntawm cov pob naphthalene txo qis thaum qhib qhib vim sublimation. Vim li cas cov pob naphthalene ua me me thaum qhib? Thaum cov pob naphthalene qhib, vim sublimation lawv hloov mus rau vapors thiab lawv qhov loj me me.
Thaum qhov kev sim xeb vim li cas qhov kub ntawm cov tshuaj tiv thaiv nce?
Feem ntau, qhov kub lossis siab nce ncaj qha ua rau tus nqi corrosion ntau dua vim tias cov tshuaj electrochemical feem ntau tshwm sim sai dua ntawm qhov kub siab dua. Kub nce ntxiv zog rau cov tshuaj tiv thaiv, uas ua rau nce tus nqi corrosion.
Thaum lub qhov yog reamed nyob rau hauv hlau kom loj nws yog?
Thaum ib lub qhov Reamed nyob rau hauv hlau kom loj Nws yog txheej txheem ntawm enlarging qhov no yog hu ua reaming. Reaming yog txheej txheem tseem ceeb los nthuav koj lub cuab yeej hlau lub qhov kom koj tsis tas yuav rov xav txog koj txoj kev xaiv.
Ntawm strava dab tsi yog qhov nce nce?
nce nce yog the elevation_gained_. Nws tsis suav ib qho kev downhill, yog li nws tsuas yog suav thaum koj khiav nce toj. Qhov kev nce siab yog qhov sib npaug ntawm ob qho tib si nce toj thiab nqis toj hauv mais. qhov nce siab txhais li cas?
