Video: Dab tsi yog qhov nyuaj ntawm Dijkstra's algorithm?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Lub sij hawm nyuaj ntawm Dijkstra's Algorithm yog O (V 2) tab sis nrog min-priority queue nws poob mus rau O (V + E l o g V).
Ib sab ntawm no, Dijkstra's algorithm yog dab tsi nrog piv txwv?
Dijkstra's algorithm (los yog Dijkstra cov Txoj Kev Shortest Thawj algorithm , SPF algorithm ) yog ib algorithm txhawm rau nrhiav txoj hauv kev luv tshaj plaws ntawm cov nodes hauv daim duab, uas tuaj yeem sawv cev, rau piv txwv , kev networks. Rau qhov muab qhov node hauv daim duab, lub algorithm pom txoj kev luv tshaj ntawm qhov node thiab txhua lwm yam.
Kuj Paub, yog Dijkstra's algorithm zoo? Dijkstra's algorithm yog siv rau kev tshawb nrhiav graph. Nws yog zoo , txhais tau tias nws yuav pom ib txoj kev luv tshaj plaws. Nws yog uninformed, txhais tau tias nws tsis tas yuav tsum paub lub hom phiaj ntawm tes ua ntej tes. Qhov tseeb nws pom txoj kev luv tshaj plaws los ntawm txhua lub pob mus rau ntawm lub hauv paus chiv keeb.
Ib sab ntawm no, Dijkstra's algorithm ua dab tsi?
Dijkstra's algorithm tuaj yeem siv los txiav txim txoj kev luv tshaj plaws los ntawm ib qho ntawm ib qho daim duab rau txhua qhov ntawm lwm qhov hauv tib yam daim duab cov ntaub ntawv qauv, yog tias cov nodes tuaj yeem ncav cuag los ntawm qhov pib ntawm qhov pib. Dijkstra's algorithm tuaj yeem siv los nrhiav txoj hauv kev luv tshaj.
Puas yog Dijkstra BFS lossis DFS?
Dijkstra cov algorithm yog Dijkstra's algorithm, nws tsis yog algorithm vim BFS thiab DFS lawv tus kheej tsis yog Dijkstra cov algorithm: BFS tsis siv qhov tseem ceeb queue (los yog array, yog tias koj xav siv qhov ntawd) khaws cia qhov deb, thiab. BFS tsis ua cov ntug kev so.
Pom zoo:
Qhov txawv ntawm qhov nyuaj thiab nyuaj yog dab tsi?
Raws li adjectives qhov txawv ntawm qhov nyuaj thiab nyuaj. yog qhov nyuaj yog qhov nyuaj, tsis yooj yim, yuav tsum tau siv zog ntau thaum qhov nyuaj yog qhov nyuaj lossis convoluted
Dab tsi yog qhov nyuaj ntawm heap sort algorithm?
Heap sort yog ib qho algorithm hauv qhov chaw. TimeComplexity: Lub sij hawm complexity ntawm heapify yog O (Logn).Lub sij hawm complexity ntawm createAndBuildHeap() yog O (n) thiab zuag qhia tag nrho lub sij hawm complexity ntawm Heap Sort yog O (nLogn)
Dab tsi yog qhov teeb meem phem tshaj plaws thiab qhov teeb meem nruab nrab nyuaj ntawm binary nrhiav ntoo?
Binary search tree Algorithm Qhov nruab nrab qhov phem tshaj qhov chaw O(n) O(n) Nrhiav O(log n) O(n) Ntxig O(log n) O(n) Rho tawm O(log n) O(n)
Dab tsi yog qhov txawv ntawm qhov encryption algorithm thiab tus yuam sij?
Algorithm yog pej xeem, paub los ntawm tus neeg xa khoom, tus txais, tus neeg tawm tsam thiab txhua tus neeg paub txog kev encryption. Qhov tseem ceeb ntawm qhov tod tes yog tus nqi tshwj xeeb uas siv los ntawm koj nkaus xwb (thiab tus neeg txais thaum muaj Symmetric Encryption). Qhov tseem ceeb yog dab tsi ua rau koj cov lus encrypted tshwj xeeb ntawm cov uas siv los ntawm lwm tus
Dab tsi yog qhov qub txeeg qub teg Dab tsi yog qhov sib txawv ntawm qhov qub txeeg qub teg piav nrog piv txwv?
Inheritance yog ib txoj hauv kev kom tau txais cov yam ntxwv thiab kev coj cwj pwm ntawm ib chav kawm los ntawm lwm chav kawm. Cov chav kawm uas cov tswv cuab tau txais qub txeeg qub teg yog hu ua chav kawm hauv paus, thiab chav kawm uas tau txais cov tswv cuab tam sim no hu ua chav derived. Inheritance siv IS-A kev sib raug zoo