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Kuniaki IGARASHI
July 01, 2014
Technology
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ruby_exams
Ruby演習問題集
Kuniaki IGARASHI
July 01, 2014
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Transcript
3VCZԋशू ! ! ޒेཛྷ໌ HJUIVCJHBJHB UXJUUFSJHBJHB IUUQXXXGBDFCPPLDPNLVOJBLJJHBSBTIJ
ԋश "SSBZΦϒδΣΫτͷཁૉ͕حͷ߲Λશͯ͢ ίʔυΛॻ͍͍ͯͩ͘͞ɻ ྫ͑BSSBZ< >ͷ߹ɺ
͕දࣔ͞ΕΕ0,Ͱ͢ɻ ! ώϯτɿح͔Ͳ͏͔ௐΔͷ'JYOVNPEE ϝιου ͪͳΈʹۮ͔ௐΔͷ'JYOVNFWFO ϝιουͰ͢ɻ PEE USVF PEE GBMTF
ԋश <\UJUMFB QSJDF^ \UJUMFC QSJDF^ \UJUMFD QSJDF^> !
ͱ͍͏ΦϒδΣΫτ͔ΒɺҎԼͷΑ͏ͳΦϒδΣΫτΛ࡞Δίʔ υΛॻ͍͍ͯͩ͘͞ɻ ! <\UJUMFB QSJDF TQFDJBM-PXQSJDF^ \UJUMFC QSJDF^ \UJUMFD QSJDF TQFDJBM-PXQSJDF^>
ԋश ͋Δ"SSBZΦϒδΣΫτ͕༩͑ΒΕͨͱ͖ɺ ྫ ͑< > ͦͷதͰҎԼͷࣈ͕͍ͭ͋͘ Δ͔දࣔ͢ΔίʔυΛॻ͍͍ͯͩ͘͞ɻ !
ԋश )BTIͷόϦϡʔͷதʹͱ͍͏จࣈؚ͕·Ε Δͱ͖ʹɺͦͷόϦϡʔΛେจࣈʹมͨ͠ )BTIΛ࡞ΔίʔυΛॻ͍͍ͯͩ͘͞ɻ ྫ͑ɺ \BMJDFZFBI CPCZP MJOEBXPX^ ˢͱ͍͏)BTIΛˣʹͰ͖Ε0,Ͱ͢ɻ \BMJDFZFBI
CPC:0 MJOEB808^
ԋश จࣈྻXSJUFதͷFΛUFOʹஔ͠ɺ XSJUUFOʹ͢ΔίʔυΛॻ͍͍ͯͩ͘͞ɻ ! ώϯτɿจࣈྻͷஔ4USJOHHTVCΛ͍·͢ɻ
ԋश UFYU UFYU UFYU ͱ͍͏ͭͷจࣈྻΦϒδΣΫτ͕͋Δͱ͖ɺͱ͠ ͯ࠷େ͖͍ͷΛදࣔ͢ΔίʔυΛॻ͍͍ͯͩ͘͞ɻ ʢ͜ͷ߹ɺΛදࣔʣ ! ߟ͑ํͷҰྫɿ BSSBZΛ࡞Γɺ͜ͷͭΛΦϒδΣΫτʹมͯ֨͠ೲͯ͠ɺNBYϝ
ιουΛݺͿͱ࠷େ͖͍Λฦ͠·͢ɻ ώϯτɿจࣈྻΦϒδΣΫτΛΦϒδΣΫτʹ͢ΔͷUP@Jϝιου UP@J
ԋश ҾʹϋογϡΛड͚औΔϝιουΛॻ͍ͯ͘ ͍ͩ͞ɻͦͷϝιουͷதͰɺҾͰड͚औͬ ͨϋογϡʹΩʔUFYU͕ͳ͔ͬͨͱ͖ɺ 5IJTPCKFDUEPFTOPUIBWFUFYU LFZͱग़ྗ͢ΔίʔυΛॻ͍͍ͯͩ͘͞ɻ ! ʢྫ͑ɺϝιου໊ΛQSJOU@UFYUͱͯ͠ɺϝιουݺͼग़͠ଆ ҎԼͷΑ͏ʹͳΓ·͢ɻʣ QSJOU@UFYU
\UJUMFzUIF3VCZCPPLz^
ԋश BMJDF CPC DBSPMͷࢼݧͷ͕࣍ͷΑ͏ʹ)BTIʹ֨ೲ͞Ε͍ͯ ·͢ɻ BMJDF\FOHMJTI NBUI IJTUPSZ^ CPC\FOHMJTI NBUI
IJTUPSZ^ DBSPM\FOHMJTI NBUI IJTUPSZ^ ! ֤ՊͷฏۉΛग़ྗ͍ͯͩ͘͠͞
ԋशʲ্ڃʳ4 ͋ΔςΩετϑΝΠϧ͔ΒɺBͱ͍͏จࣈྻΛؚ Ήߦ͚ͩΛநग़ͨ͠ผͷςΩετϑΝΠϧΛ࡞ͬ ͍ͯͩ͘͞ɻ ྫɿ BMJDF CPC DBSPM ώϯτɿTFOUFODFͱ͍͏จࣈྻ͕ॻ͔ΕͨςΩετϑΝΠϧ Λ࡞ΔͷҎԼͷίʔυʹͳΓ·͢ɻ
BMJDF DBSPM PVU@pMFOBNFPVUUYU PVU@pMF'JMFPQFO PVU@pMFOBNF X65' PVU@pMFQVUTTFOUFODF PVU@pMFDMPTF
ԋशʲ্ڃʳ4 ຊͷಓݝͰɺஉੑͱঁੑͷਓޱ͕ࠩ࠷େ ͖͍ͷͲ͔͜ɺσʔλ͔Βղੳ͍ͯͩ͘͠͞ɻ ! ώϯτɿσʔλҎԼʹ͋Γ·͢ɻ IUUQXXXFTUBUHPKQ4(FTUBU-JTUEP MJE உঁผਓޱٴͼੈଳͷछྨ ۠ ผੈଳͷ$47
ώϯτɿจࣈྫΛΧϯϚͰ۠ͬͯ"SSBZʹ͢Δʹ 4USJOHTQMJUΛ͍·͢ɻ B C DTQMJU <B C D>
ԋशղ ղҰྫͰ͢ɻ3VCZͷίʔυ͍Ζ͍Ζͳॻ͖ํ͕Մ ೳͰ͢ɻ͜͜ʹڍ͛ͨίʔυ͚͕ͩਖ਼ղͰͳ͍Ͱ͢ɻ େͳͷɺಡΈखͷ৺Γͱࢥ͍ΓͰ͢ɻ
ه๏ͷઆ໌ ͱ͖Ͳ͖Ͱͯ͘Δ ͱ͍͏ϚʔΫ࣮ߦ݁ՌΛද͠·͢ɻ Q QBSSBZ< > ίʔυͰͳ͍ͷͰଧͨͳͯ͘େৎͰ͢ɻ͠ଧͬͨ
ͱͯ͠ɺ͔Β࢝·ΔՕॴίϝϯτͱͯ͠ѻΘΕΔ ͷͰɺԿى͖·ͤΜɻ
ԋश "SSBZΦϒδΣΫτͷཁૉ͕حͷ߲Λશͯ͢ίʔυΛॻ͍͍ͯͩ͘͞ɻ ྫ͑BSSBZ< >ͷ߹ɺ ͕දࣔ͞ΕΕ
0,Ͱ͢ɻ ώϯτɿح͔Ͳ͏͔ௐΔͷ'JYOVNPEE ϝιου ͪͳΈʹۮ͔ௐΔͷ'JYOVNFWFO ϝιουͰ͢ɻ BSSBZ< > TVN BSSBZFBDIEPcJc TVN JJGJPEE FOE QTVN ߦͰ͔ͬ͜Α͘ॻ͘͜ͱͰ͖·͢ɻ ্ڃऀ͚ < >TFMFDU\cJcJPEE ^JOKFDU PEE USVF PEE GBMTF
ԋश <\UJUMFB QSJDF^ \UJUMFC QSJDF^ \UJUMFD QSJDF^> ͱ͍͏ΦϒδΣΫτ͔ΒɺҎԼͷΑ͏ͳΦϒδΣΫτΛ࡞ΔίʔυΛॻ͍͍ͯͩ͘͞ɻ
<\UJUMFB QSJDF TQFDJBM-PXQSJDF^ \UJUMFC QSJDF^ \UJUMFD QSJDF TQFDJBM-PXQSJDF^> JUFNT<\UJUMFB QSJDF^ \UJUMFC QSJDF^ \UJUMFD QSJDF^> JUFNTFBDIEPcJUFNc JUFN<TQFDJBM>-PXQSJDFJGJUFN<QSJDF> FOE QJUFNT <\UJUMFB QSJDF TQFDJBM-PXQSJDF^ \UJUMFC QSJDF^ \UJUMFD QSJDF TQFDJBM-PXQSJDF^> ࣮ߦ݁Ռ
ԋश ͋Δ"SSBZΦϒδΣΫτ͕༩͑ΒΕͨͱ͖ɺ ྫ ͑< > ͦͷதͰҎԼͷࣈ͕͍ͭ͋͘ Δ͔දࣔ͢ΔίʔυΛॻ͍͍ͯͩ͘͞ɻ BSSBZ<
> DPVOU BSSBZFBDIEPcJc DPVOU JGJ FOE QDPVOU BSSBZ< > QBSSBZDPVOU\cJcJ^ ผղɹDPVOUϝιουʹϒϩοΫΛ͢͜ͱͰΧϯτͰ͖·͢ɻ ϒϩοΫEPFOEͷมΘΓʹ\^Ͱॻ͘͜ͱͰ͖·͢ɻ
ԋश )BTIͷͷதʹͱ͍͏จࣈؚ͕·ΕΔͱ͖ʹɺͦͷΛେจࣈ ʹมͨ͠)BTIΛ࡞ΔίʔυΛॻ͍͍ͯͩ͘͞ɻ ྫ͑ɺ \BMJDFZFBI CPCZP MJOEBXPX^ ˢͱ͍͏)BTIΛˣʹͰ͖Ε0,Ͱ͢ɻ \BMJDFZFBI CPC:0
MJOEB808^ I\BMJDFZFBI CPCZP MJOEBXPX^ IFBDIEPcLFZ WBMVFc I<LFZ>WBMVFVQDBTFJGWBMVFd FOE QI \BMJDFZFBI CPC:0 MJOEB808^
ԋश จࣈྻXSJUFதͷFΛUFOʹஔ͠ɺ XSJUUFOʹ͢ΔίʔυΛॻ͍͍ͯͩ͘͞ɻ ώϯτɿจࣈྻͷஔ4USJOHHTVCΛ͍·͢ɻ XSJUFHTVC F UFO XSJUUFO HTVCഁյతϝιουͰ͢ɻରͷΦϒδΣΫτΛॻ͖͑·͢ɻͷͳ͍ HTVCͱ͍͏ϝιου͋Γ·͢ɻHTVCஔͨ͠৽͍͠4USJOHΦϒδΣ
ΫτΛฦ͠·͢ɻҧ͍ҎԼͷίʔυΛ࣮ߦ͢Δͷ͕͔Γқ͍Ͱ͢ɻ TUSJOHXSJUF TUSJOHHTVC F UFO QTUSJOHXSJUUFO TUSJOHXSJUF TUSJOHHTVC F UFO QTUSJOHXSJUF
ԋश UFYU UFYU UFYU ͱ͍͏ͭͷจࣈྻΦϒδΣΫτ͕͋Δͱ͖ɺͱͯ͠࠷େ͖͍ͷΛද ࣔ͢ΔίʔυΛॻ͍͍ͯͩ͘͞ɻʢ͜ͷ߹ɺΛදࣔʣ ߟ͑ํͷҰྫɿ BSSBZΛ࡞ͬͯ͜ͷͭΛͱͯ֨͠ೲͯ͠ɺNBYϝιουΛݺͿͱ࠷େ͖͍Λฦ͠·͢ɻ ώϯτɿจࣈྻΦϒδΣΫτΛΦϒδΣΫτʹ͢ΔͷUP@Jϝιου UP@J
UFYU UFYU UFYU BSSBZ<> BSSBZQVTIUFYUUP@J BSSBZQVTIUFYUUP@J BSSBZQVTIUFYUUP@J QBSSBZNBY
ԋश EFGQSJOU@UFYU I QVUT5IJTPCKFDUEPFTOPUIBWFUFYULFZVOMFTTI<UFYU> FOE QSJOU@UFYU \UFYUUIF3VCZCPPL^ ग़ྗͳ͠ QSJOU@UFYU
\GPPCBS^ 5IJTPCKFDUEPFTOPUIBWFUFYULFZ ҾʹϋογϡΛड͚औΔϝιουΛॻ͍͍ͯͩ͘͞ɻͦͷϝιουͷதͰɺҾͰड͚औͬͨ ϋογϡʹΩʔUFYU͕ͳ͔ͬͨͱ͖ɺ5IJTPCKFDUEPFTOPUIBWFUFYULFZͱग़ ྗ͢ΔίʔυΛॻ͍͍ͯͩ͘͞ɻ ʢྫ͑ɺϝιου໊ΛQSJOU@UFYUͱͯ͠ɺϝιουݺͼग़͠ଆҎԼͷΑ͏ʹͳΓ·͢ɻʣ QSJOU@UFYU \UJUMFzUIF3VCZCPPLz^
ԋश BMJDF CPC DBSPMͷࢼݧͷ͕࣍ͷΑ͏ʹ)BTIʹ֨ೲ͞Ε͍ͯ·͢ɻ BMJDF\FOHMJTI NBUI IJTUPSZ^ CPC\FOHMJTI NBUI IJTUPSZ^
DBSPM\FOHMJTI NBUI IJTUPSZ^ ֤ՊͷฏۉΛग़ྗ͍ͯͩ͘͠͞ BMJDF\FOHMJTI NBUI IJTUPSZ^ CPC\FOHMJTI NBUI IJTUPSZ^ DBSPM\FOHMJTI NBUI IJTUPSZ^ ! QVUTFOHMJTIBWFSBHF BMJDF<FOHMJTI> CPC<FOHMJTI> DBSPM<FOHMJTI> QVUTNBUIBWFSBHF BMJDF<NBUI> CPC<NBUI> DBSPM<NBUI> QVUTIJTUPSZBWFSBHF BMJDF<IJTUPSZ> CPC<IJTUPSZ> DBSPM<IJTUPSZ>
ԋशʲ্ڃʳ4ղ ͋ΔςΩετϑΝΠϧ͔ΒɺBͱ͍͏จࣈྻΛؚΉߦͩ ͚Λநग़ͨ͠ผͷςΩετϑΝΠϧΛ࡞͍ͬͯͩ͘͞ɻ ྫɿ BMJDF CPC DBSPM BMJDF DBSPM ϑΝΠϧ͔ΒಡΈࠐΈ
JODMVEFE<>ग़ྗ༻σʔλΛ֨ೲ͢Δ"SSBZ JO@pMFOBNFJOUYU 'JMFPQFO JO@pMFOBNF S65' EPcJO@pMFc XIJMFUFYUJO@pMFHFUT JODMVEFEUFYUJGUFYUdB FOE FOE ϑΝΠϧॻ͖ࠐΈ PVU@pMFOBNFPVUUYU 'JMFPQFO PVU@pMFOBNF X65' EPcPVU@pMFc JODMVEFEFBDIEPcJc PVU@pMFQVUTJ FOE FOE ͭͷϑΝΠϧΛPQFO͠·͢ɻ ग़ྗଆX65' ॻ͖ࠐΈ Ͱ͢ɻ ·ͨɺ'JMFPQFOʹϒϩοΫΛ ͢ͱϒϩοΫྃ࣌ʹࣗಈͰ DMPTF͠·͢
ԋशʲ্ڃʳ4ղ ͋ΔςΩετϑΝΠϧ͔ΒɺBͱ͍͏จࣈྻΛؚΉߦͩ ͚Λநग़ͨ͠ผͷςΩετϑΝΠϧΛ࡞͍ͬͯͩ͘͞ɻ ྫɿ BMJDF CPC DBSPM BMJDF DBSPM JO@pMFOBNFJOUYU
PVU@pMFOBNFPVUUYU 'JMFPQFO JO@pMFOBNF S65' EPcJO@pMFc 'JMFPQFO PVU@pMFOBNF X65' EPcPVU@pMFc XIJMFUFYUJO@pMFHFUT PVU@pMFQVUTUFYUJGUFYUdB FOE FOE FOE JOͱPVUΛಉ࣌ʹ։͘ॻ͖ํͰ͢ɻ݁Ռ֨ೲ༻ͷ"SSBZ͕ෆཁʹͳΔͷͰ εοΩϦͰ͢ɻ
ԋशʲ্ڃʳ4 ຊͷಓݝͰɺஉੑͱঁੑͷਓޱ͕ࠩ࠷େ ͖͍ͷͲ͔͜ɺσʔλ͔Βղੳ͍ͯͩ͘͠͞ɻ ! ώϯτɿσʔλҎԼʹ͋Γ·͢ɻ IUUQXXXFTUBUHPKQ4(FTUBU-JTUEP MJE உঁผਓޱٴͼੈଳͷछྨ ۠ ผੈଳͷ$47
ώϯτɿจࣈྫΛΧϯϚͰ۠ͬͯ"SSBZʹ͢Δʹ 4USJOHTQMJUΛ͍·͢ɻ B C DTQMJU <B C D> ࢲ·ͩॻ͍͍ͯͳ͍ͷͰɺ୭͔ॻ͚ͨΒίʔυΛࢲ·Ͱૹ͍ͬͯͩ͘͞ɻɿʣ
None
ࢀߟࢿྉ
BCD ࣮ߦ݁Ռ QVUTBCD ॻࣜ 3VCZίʔυ ࣮ߦ݁Ռ TIFMMίϚϯυ MT Q
จதͰͰॻ͖·͢