Kev Tshawb Nrhiav Qhov tob yog feem ntau siv thaum koj xav tshawb nrhiav tag nrho tsob ntoo. Nws yooj yim dua rau kev siv (siv recursion) dua li BFS, thiab yuav tsum muaj lub xeev tsawg: Thaum BFS xav kom koj khaws tag nrho 'frontier', DFS tsuas yog xav kom koj khaws cov npe ntawm niam txiv ntawm cov khoom tam sim no.
Thaum twg DFS yuav zoo dua BFS?
BFS yog qhov tsim nyog rau kev tshawb nrhiav vertices uas ze dua rau qhov muab. DFS yog qhov tsim nyog tshaj thaum muaj cov kev daws teeb meem deb ntawm qhov chaw. 4. BFS suav tag nrho cov neeg nyob ze ua ntej thiab yog li tsis tsim nyog rau kev txiav txim siab ntoo siv hauv kev ua si lossis kev sib tw.
DFS siv tau rau dab tsi?
Daim ntawv thov. Kev tshawb nrhiav qhov tob yog siv hauv topological sorting, teem sijhawm teeb meem, tshawb nrhiav lub voj voog hauv daim duab, thiab daws cov kev sib tw nrog ib qho kev daws teeb meem, xws li maze lossis sudoku puzzle. Lwm daim ntawv thov suav nrog kev txheeb xyuas cov tes hauj lwm, piv txwv li, kuaj seb daim duab puas yog bipartite.
DFS qhov zoo thiab qhov tsis zoo yog dab tsi?
Nws yuav mus txog ntawm lub hom phiaj ntawm lub sijhawm tsawg dua BFS yog tias nws hla mus rau txoj kev raug. Nws tuaj yeem nrhiav kev daws teeb meem yam tsis tau tshuaj xyuas ntau qhov kev tshawb fawb vim tias peb yuav tau txais cov kev daws teeb meem hauv thawj zaug mus. Disadvantages: Nws muaj peev xwm hais tias tej zaum yuav rov tshwm sim dua.
DFS yog dab tsi zoo dua BFS?
Nws yuav tseem ceeb mus rau hauv thawj txoj kev thiab yuav tsis pom lub ntsiab. Lub BFS thaum kawg yuav pom qhovelement. Yog tias qhov luaj li cas ntawm daim duab yog qhov kawg, DFS yuav pom qhov sib txawv (qhov loj dua ntawm qhov nruab nrab ntawm lub hauv paus thiab lub hom phiaj) lub caij sai dua qhov twg BFS yuav pom qhov ze dua sai dua.
