ඇල්ගොරිතම 11 ශ්රේණිය ICT
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Transcript of ඇල්ගොරිතම 11 ශ්රේණිය ICT
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.eg¨ úi|Sug l%uf,aL ,sùu
ufyaIa fldä;=jlal= BTec(ICT) , MCTS. MIEEE Professional Development Course in ICT (AIT-Thailand) National Dip in Teaching (Merit)
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• ,nd .; yels ,l=Kq .Kk 15-18
• wdjrKh lsrSug ,nd .kakd ld,h ld,fPao 06
• miq.sh m%Yak yd wdo¾aY m%Yak m;%
idlÉPdj i|yd ld,fPao 02
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රසවත් තත් ත ෝප්පයක් ඔබට තනන්නට යැයි
කීතවොත් ඒ සඳහා ඔබ අනුගමනය රන පියවර
තමොනවාද?
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wdodk ( f;a fld<" iSks" WKq c,h
l%shdj,sh ( 1' f;a fld< fmrkhg oeóu 2' fmrkh ;=<ska WKq c,h fldamamhg oeóu 3' iSks álla f;a fldamamhg oeóu 4' yekafoka f;a fldamamfhys jQ iSks Èh lsÍu 5' yekafoka f;a iaj,amhla f.k rih mÍlaId lsÍu 6' rih m%udKj;a fkdfõ kï mshjr wxl 3g hdu iy 4 iy 5 mshjr kej; isÿ lsÍu'
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m%;sodkh ( rij;a f;a fldamamh
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;eme,a lsÍug iqÿiq ,smshla iE§u wdodk ( ,smsh ,sùug iqÿiq fld<hla iy mEkla ,shqï ljrhla iy uqoaor ue,shï
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l%shdj,sh ( 1' ,smsh ,sùu 2' ,smsh kjd ,shqï ljrhg nyd ,Su 3' ,shqï ljrh we,ùu 4' hd hq;= ,smskh ,shqï ljrfha ,sùu 5' uqoaor we,ùu
m%;sodkh ( ;eme,a lsÍug iqÿiq ;;a;ajfha mj;sk ,smshla
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úl,am úi÷ï y÷kd.ekSu
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Tn mdi,g meñfKkafka mdi,a nihlska hehs is;kak' mdi,g meñfKñka isák úg nia r:fha fodaIhla ksid w;ru. kej;=Ks kï Tng mdi, fj; meñKSug yels fjk;a l%u .ek is;kq we;‘ tajd fudkjdo@
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iDcqfldaKdi%hl mßñ;sh fiúh yels úl,am l%u fudkjdo@
10 cm
5 cm
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• Algorithm hkq .eg¨jla úi|Su i|yd wkq.ukh lrk l%ufõoh wkqms<sfj<ska ,shd oelaùuhs‘
• a process or set of rules to be followed in calculations or other problem-solving operations, especially by a computer.
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we,af.dß;u ixj¾Okh lsÍu i|yd md,k jHqy Ndú;h
wkql%uh (Sequence)
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we,af.drs;uhl පිහිටි පියවර කිහිපයක් තහෝ සියල්ලම තහෝ ආරම්භ පියවර සිට අවසාන
පියවර දක්වා ඉහල සිට පහළට එ එල්තල්
අනුපිළිවලින් ක්රියාත්ම කිරීම මින් අදහස් තේ.
wkql%uh (Sequence)
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jrKh (Selection)
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jrKh (Selection) ඇල්තගොරිතමය ඇතුළත්
ත ොන්තේසියක් තෘප්තවීම තහෝ
තනොවීම අනුව ක්රියාත්ම ළ යුතු
පියවර කුමක් ද යන්න දැක්වීම මින්
අදහස් තේ.
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mqk¾lrKh (Iteration)
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mqk¾lrKh (Iteration) we,af.drs;uhl පිහිටි පියවරක්/පියවර
කිහිපයක් තහෝ ත ොන්තේසියක් තෘප්ත වන
තතක් තහෝ තෘප්තව පවතින තතක් නැවත
සිදුවීම මින් දැක්තේ.
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.eg¨jla úi|Sfï woshr 04 ls'
• .eg¨j úYaf,aIKh lsÍu'
• .eg¨j i|yd Algorithm f.dvke.Su
• mß.Kl l%u f,aLkh ,sùu
• mß.Kl l%u f,aLkh ls%hd;aul lr ne,Su
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we,af.dß;u f.dvke.sh yels wdldr 02 ls'
• .e,Sï igyka(Flow Chart)
• jHdc fla; (Pseudo Codes)
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wdrïNh$wjidkh
ieliqu
wdodk$m%;sodk
.e,Sï igyka(Flow Chart)i|yd Ndú; jk ixfla;
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;SrK fldgqj
iïnkaOl
o;a; .,dhdu
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tla;rd úNd.hloS wfmalaIhkayg m%Yak m;% follg ms<s;=re iemhSug isÿjk w;r m<uqjk yd fojk m%Yak m;% j, ,l=Kq wdodkh l< úg tys tl;=j m%;sodkh lsÍu i|yd .e,fmk .e,Sï igykla w|skak'
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IF භාවිතය
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hï wfhl=f.a jhi wdodkh l< úg th wjqreÿ 18 la fyda thg jeä kï Pkaoh m%ldY l< yels nj o ke;fyd;a Pkaoh m%ldY l< fkdyels nj o m%;sodkh lsÍu i|yd .e,fmk .e,Sï igykla w|skak'
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my; oelafjkafka úúO WIaK;aj hgf;a oS c,h y÷kajk kï lsysmhls' c,fha WIaK;ajh wdodkh l< úg thg wod, m%;sodkh oelaùu i|yd .e,fmk .e,Sï igykla w|skak
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l%slÜ ;r.hl lvq,a, miqmi isg lvqt rlskakd ojd,Sula l< njg lrk ,o b,a,SuloS m%Odk úksYaphlre th f;jk úksYaphlreg fhduqlrkq ,efí' f;jk úksYaphlre tu isÿùu rEmjdyskS mqk¾rEmK wdY%fhka kej; n,kq ,efí' oeù hdula f,i i,l=Kq lsÍug kï uq,skau mkaÿhjkakd hejQ mkaÿj ksmkaÿjla fkdúh hq;== w;r lvq,a, ì| ouk wjia:dfõoS ms;slre ;u iSud brg bosßfhka isáh hq;=h'fuu l%shdj,sh ksrEmKh i|yd .e,Sï igykla w|skak'
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mqk¾lrK j¾. Type of Loops
• While ..do
• For… do
• Repeat …Untill
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Start
Num <= 10
Display “Sri Lanka”
Num = 1
Num = Num + 1
Stop
Yes
No
While do Loop
Begin
Num = 1
While Num < =10 do
Display “Sri Lanka”
Num = Num + 1
End while
End
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Start
Num > 10
Display “Sri Lanka”
Num = 1
Num = Num + 1
Stop
No
Yes
Repeat Until
Begin
Num = 1
Repeat
Display “Sri Lanka”
Num = Num + 1
Until Num > 10
End