Hauv computer science, ib qho teeb meem tau hais tias muaj teeb meem sib tshooj yog tias qhov teeb meem tuaj yeem tawg mus rau hauv cov teeb meem uas tau rov qab siv ob peb zaug lossis rov ua dua tshiab rau qhov teeb meem daws cov teeb meem qub qub dhau los es tsis yog ib txwm tsim tawm tshiab. subproblems.
Dab tsi yog qhov zoo tshaj plaws substructure thiab overlapping subproblems nyob rau hauv dynamic programming?
Ib qho teeb meem muaj qhov zoo tshaj plaws hauv kev tsim khoom yog tias qhov kev daws teeb meem zoo tshaj plaws tuaj yeem tau txais los ntawm kev siv cov kev daws teeb meem zoo ntawm nws cov teeb meem. Dynamic Programming siv qhov zoo ntawm cov cuab yeej no los nrhiav kev daws teeb meem.
Dab tsi yog qhov sib tshooj Subproblem hauv dynamic programming?
1) Overlapping Subproblems:
Dynamic Programming yog mas tsuas yog siv thaum cov kev daws teeb meem ntawm tib cov teeb meem xav tau ib zaug ntxiv. Nyob rau hauv dynamic programming, xam cov kev daws teeb meem rau subproblems yog khaws cia rau hauv ib lub rooj kom cov no tsis tas yuav recomputed.
Dab tsi yog qhov txawv ntawm qhov pom kev zoo tshaj plaws thiab cov teeb meem sib tshooj?
Kuv nkag siab lub hom phiaj mus kom ze rau ob txoj hauv kev uas Optimal Substructure xam cov kev daws teeb meem zoo raws li cov tswv yim n thaum Overlapping Subproblems lub hom phiaj tag nrho cov kev daws teeb meem rau ntau yam kev tawm tswv yim hais los ntawm 1 mus rau n. Rau qhov teeb meem zoo li Qws Txiav Teeb meem.
Qhov twg ntawm cov Tehniques no siv cov teeb meem sib tshooj?
Dynamic Programming yog txheej txheem los daws cov teeb meem sib tshooj. Hauv qhov no, peb khaws cov txiaj ntsig ntawm qhov teeb meem me me uas daws tau ib zaug rau yav tom ntej rov siv dua. Cov txheej txheem khaws cia cov kev daws teeb meem yog hu ua memoization.
