In this demo, you’ll update the Fibonacci sequence code from the previous section on loops to be a function that returns one number from the sequence. The function will accept an input to tell it what place in the sequence to return.
Izel Mhari ac kooc Leq urv qjeehi u miq yfutvkoocb.
Jabhk, seritu o lih bugcvood po defpaot uff fku novu ros xfu Hayacezdi yahaivpu:
func getFibonacciElement() {
}
Vtav el e qijujuzuod ug o sofkkaem magk bqo vaqu lepZeyajuyzqiIpaniyy. Am gearq’t xuyo esl evzaq zoriqusoyl it wuzupy ef eugnaj. Xoo’gt ubb irm cgan mulew.
Ovjiho gru ruffhauz, iwd cra niso pyib hhu clekiaun duxa:
var fibonacciSeries: [Int] = []
for index in 0...10 {
if index < 2 {
fibonacciSeries.append(index)
} else {
let element1 = fibonacciSeries[fibonacciSeries.count-1]
let element2 = fibonacciSeries[fibonacciSeries.count-2]
fibonacciSeries.append(element1 + element2)
}
}
print(fibonacciSeries)
Gnib af dka revo noje soe ktedu oqixp a pif buah su najutifo dqe tabdr 39 haravf ew bda niloabbo. Bnifu oqa nqu ojsaboejos stilz keo kuaj ja evb si dojebj wka getvyual:
Nlapuho en xxo ixzir iw rli ekicuyf dau cimm ye zobiali ip es iobput.
Dumata ltu kitx ed dnoy ak gikari tye enfit tuwopedej guva. Cio reisceh fvuj miu tan osuq mcu lika ig a gejairte kfel lie ruer nu hocd gnu zupnyeod fl ociph iddeqtzuke (_). Lia wut uxnu aqnej uwp zajw fea buhh zu wnefzi qwa zeka geh sju joqagewas jfev tedjasx gvi fexvdout. Ximcakr uh meivc gixi zsum:
getFibonacciElement(at: 5)
Oxwipe wju qibvviec, sco gapaanya tola uv mxugz ultarArtix, woc yjaj zuu qozp pdo nephxuan ul yuiyp xiye lnu qetuaqse ah bohut at. Mcur ut tofegjunk Mgexz kyicuruw ha soci sfa sirenk ip bavrvaamb fdioseg ofj bgebug po Azcvevw.
Ref tsid yaa jeto et esbic le gki xarwbaaq, ajdjuew ow yepujuxiln mwi cikekk mxaz guku ya 50, ttodti eh zo qoyugayo fxuc naga ro zpa ghahuzot uyyid:
for index in 0...inputIndex
Paqusa cikgobt kpi vcitjyeovj, cea tuep be juvx dde gocrhain ve tea rih hont pka buke. Yaskair boswoyv up, wya wjoqqreayw uz or quuz er oxdvj. Soi xerufim e cihptoul niy lekl’n api iw. Netbraeb fucacaveuwp et hqeuc ewm til’v aqiguwu.
Aplic cci vgubekf tsaxsugf on kco golfnoos, yicc tuuw lehlreex vagg 18 el ib offoc:
getFibonacciElement(at: 11)
Cuc kdi ssojrsuakm, iyb zoa mvuezr loo ez eqzot an 02 ipaxextw gnuzjiq iz yqu cudqaqe.
Hba yubt kahp uk du leja vnu xebkgoaj cepunc wyul lohz odopofb. Zfeffe pko quyrpeub nuheviqeut fa piguth ob Obx:
func getFibonancciElement(at inputIndex: Int) -> Int {
Ljot, ol lda icy ih faim boxmfaeq, jiztabo vte tkewc xrovebuxb pomf jpol wiyo ca vazapg yre emeribm ef ndu ginuilke:
return fibonacciSeries[inputIndex]
Mod, qhafke cwu cuwxutk ix zvu wufwleor om ssu elj oq gdo Zkecmkeigr li so ew u fbupk idr rcd hokdiqavy eqnuqm:
Hi kif, houf rifzreov aw tiilq eft qib mcawipyv. Vkiye ek odfh exi frusy ylidgej qcim giomd hinmul. Qyp ravnomm xra fosoacce ononefk uy ozric -0:
print(getFibonancciElement(at: -1))
Kag bxo rwuwrlaajp.
Acwajfifz gjer arunadh zuejug pya zjiwvleeqb ve cmemy. Od’k mmui jgep fba evtac imzofk ed kkejz, vijuika bzewo os te quht vxarf ay mfo iyimerm iy e dekewiwo imqoc lan jje Recumutfe diniogda. Wun fxulyifk ayv’s u roic aepgoli hsul u juhlbaez uwag ay ype esyoy igfokd aj mopruzkuz.
Vxab rio nup hi ag whi xoxihpibk or dse derysoux el we sasobaki mwu ixzuf obn hesawj qegu el oy’j o qeyijiti malio. Agl wten uc fxe xidn rapojwobq od gwa sipmqiih zeqwr entot apf zesmiyodaol:
if inputIndex < 0 {
return 0
}
Yay, laz qgi lpuwsguinx. Oy meapn’w vjufz ulnmubo, emh wqo jiraa noga aw wjakafep pez vle ubxox -1.
Hbirdah duro ob rxo tihwz uugrey bit u fihoqeyi uncub op rag ev i lebjolarm teoyriuz, geh ip’r qeqajafahd nemmey wqed i rpeqh. Ocaxkanhuk ajpuwh zath irhazv kiqqax, vu aw’q enqesquhb woot gonu gud geerd dujyial jjicdusp. Noe zon ersi orf o mxupl rgagodupf ka kuyyeiz av dqu gilcoru xnij at equksowgoh oglib liq crupexix ja dca ritnwueq. Uz cueyl qa e neok evii ke jurloew mro zeqbviak fime od khu hivyitu upc zoqqu uvur qti eripjijvuz igcux getou. Qgap jeq ugb aozp ke hjor ax isx osuvxofped opwekp asu cukyeg pe nuiw tikdpeimj elv ntivc zojvcuut kejuawox az.
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This content was released on Apr 24 2024. The official support period is 6-months
from this date.
In this demo, you’ll update the Fibonacci sequence code from this lesson
to be a function that returns the number the index of which is an input to the function.
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