8/8/2019 [n thi cao hc PTIT - KTLT] Test 2
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TEST2
1. S in thoi di ng ca mt hng vin thng c nh s theo qui cch 091N.
XXX.XXX. Trong, N l s t 2 n 9, X l mt s t 0 n 9. Ta nh ngha cc loi
s in thoi sau:
S in thoi loi I (Loi I): L nhng s m su s cui cng ca n to thnh mt
s thunnghch c su ch s. V d s: 0913.558855.
S in thoi loi II (Loi II): L nhng s in thoi Loi I m tng su ch s
cui cng can l mt s chia ht cho 10 . V d s: 0913.104.401
(1+0+4+4+0+1=10).
S in thoi loi III (Loi III): L nhng s in thoi Loi II m su ch s
cui cng ca nkhng cha bt k mt s 0 no. V d s: 0913. 122.2211.
Hy vit chng trnh thc hin:
Lit k tt c cc s in thoi Loi I khng cha cc s in thoi Loi II. Ghi
li cc s Loi Ivo file Loai1.out theo tng dng, mi dng khng qu 8 s in
thoi.
Lit k tt c cc s in thoi Loi II khng cha cc s in thoi Loi III.
Ghi li cc s Loi IIvo file Loai2.out theo tng dng, mi dng khng qu 8
s in thoi.
Lit k tt c cc s in thoi Loi III. Ghi li cc s Loi III vo file
Loai3.out theo tng dng,mi dng khng qu 8 s in thoi.
2. Hy vit chng trnh lit k tt c cc s t nhin K tha mn ng thi nhng
iu kin di y:(i) K l s c 5 ch s;(ii) K l s nguyn t;(iii) K l s thun
nghch (k l s thun nghch nu c xui hay c ngc cc ch s ca k ta u
nhn c mt s nh nhau. V d s: 30303);(iv) Biu din ca K h c s B ( B
bt k cng l mt s thun nghch. V d s k=30303 c
biu din h c s 8 l 73137 cng l mt s thun nghch;
3. Hy vit chng trnh lit k tt c cc s t nhin K tha mn ng thi nhng
iu kin di y:(i) K l s c 5 ch s;(ii) K l s nguyn t;(iii) o ngc cc ch
s trong ca K cng l mt s nguyn t;(iv) Tng cc ch s ca K cng l mt s
nguyn t;(v) Mi ch s trong K cng l nhng s nguyn t.
4. Hy vit chng trnh lit k tt c cc s t nhin K tha mn ng thi nhng
iu kin di y:(i) K l s c 5 ch s;(ii) K l s nguyn t;(iii) Mi ch s ca
K cng l nhng s nguyn t;(iv) Tng cc ch s ca K l mt s thun nghch hai
ch s;(v) Tch cc ch s ca K l mt s thun nghch ba ch s.
