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# はじめての数論 with Ruby (v. v.) (関西Ruby会議03 LT)

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### はじめての数論 with Ruby (v. v.) (関西Ruby会議03 LT)

1. 1. li L:6’1>'C0)§5l§ﬁ With Ruby (V. V. ) l, ’r}‘&: [Ryu Nzigziil sushizuto :1 |3ElERuby€: ’§\$03 Tld: Li61)‘C0)ﬁ? n‘i with Ruby (v. v. )J
2. 2. person(: shizuto) . introduce > ﬁ’= HiA«7+%7°III’J“57 > 7‘: “Lf: l,Co D'7°ﬁ= ’r’1‘ﬁ75.tE'C~‘Tc| ¢‘:7‘JRubytfJ‘. . > 7T: §I\$‘V= \$/u » ¥¥5I§ﬁ(§I§ﬁ%§1EI)«’°o'C\$L,7‘: o > §E§t! ¥% » EIIFEE > \$333 »75>x% >9ﬁu7% > Ruby > 2 |3§ERuby€: ‘303 | 'liL1&)‘C0)ﬁ§n‘B with Ruby (v. v. )J
3. 3. ii L‘L<V)T0)Ruby (3"FL0)ia%’S) C: ¥Users¥Shizuto>irb irb(main) 00120) 2**i024 = > 17976931348623i5907729305i90789024733617976978942 30657273430081i57732675805500963i3270847732240753602 I1201138798713933576587897688i44i6622492847430639474 I243777678934248654852763022196012460941194530829520 8500576883815068234246288i4739i3ii05408272371633505i 06845862982399472459384797163048353563296242241372i6 irb(main)I0O2I0> 3 E5lERuby’z%§§03 | 'iiLZ&’)‘C0)§\$I§ii with Ruby (v. v. )J
4. 4. i%5z\$i: RubyE-i; =E o 'Co'L/ L31 5 '5'. ‘/7’)l»é: l,’C. 5*e\$%*5zi%L. EL: ca+\$6'. . 4 EE-lERuby’z‘: §§03 | 'iiL2&’)‘C0)§\$I§ii with Ruby (v. v. )J
5. 5. %e&&m? ii (E £3*€'l3‘, -'r‘<). ‘f:9iéﬁI0)i*~D7‘J“§ Erc‘: %L, <72£Z9f: %‘§éfl0>. :c‘: 1911 40>i9§azi; t1,2. 1+ 2 = 3.. 4i: I?E%§2ﬁ’C‘i: i7Z£Lo 60)iﬁ'Ji3iﬁl2lZ1,2,3o 1+ 2 + 3 = 60 6ii? E’£§é5I. . 120). ‘i: ‘~Ji€Ii; t1,2,3.4,6o 1+2+3+4+6= 16.. 12ii? ‘?: %§ﬁ'Gi3t7?; l,o 5 E§lERuby’z‘: §§03 | 'iiL2&’)‘C0)§\$I§ii with Ruby (v. v. )J
6. 6. §rt-§-- :2/‘Zn §|13E0)\$>Za2€‘/ “Jl~“i: §a‘-EIJLJI5 ’}‘LFf’). 3—l~°*&ﬁE7‘J‘2S")7faIf)“| ‘o%’~L'CLi'}‘é —lﬂi_L,7”: <'/ §i’3T: “o—’: §‘l35JT: ‘H'_lﬁ'_‘l‘; *?o '%‘iEit: b<uZ§§7‘otFo. i§75v57)i, :i")7<‘. /.EZ§ELot5 %‘l§l0)1%%id: - - - %'JL)t)]9rL%'a7’Jc‘: °’375\$'J/ “u"JTZa (divided_by? ) iUéﬁ0>'J7I~%: vi’iE%a (| ist_of_divisor) . ‘i‘~]§3ﬁ0)r°if‘a? \$lJ’¢“'E3.“r5.s'%'L7f?9 (sum/ of/ divisor) Jﬁéiﬁl/ J‘cE575‘45ll/ till’? -%l) (complete? ) 6 BE-lERuby’z‘: §§03 | 'iiLi&’)‘C0)§3IEii with Ruby (v. v. )J
7. 7. TXbE§_9 describe 'lnteger' do describe '#divided_by? (i)' do it 'should judge if it is divided by i’ do l0.divided_by? (5). should be_true I8. div ided_by? (4). should be_fa| se end and describe '#comp| ete? ' do it ‘should judge if it is a complete number’ do 6. complete? . should be_true i2.comp| ete? .shou| d be_fa| se end end end P 7 | ¥lERuby‘£‘7ﬁ03 | 'id: L'. &b‘C0)&§u‘i with Ruby (v. v. )J
8. 8. :—FE%:5 class integer def divided by7(i) self / i * i = = self end def llSl of d visor ary = [J for i in l. .self ary << i if divided_by? (i) end ary end def c0*p| ete7 return false if self = 0 sum_of_divisor = = self end end 8 F§5lERuby%§§03 | 'li| .ZN)‘C0)ﬁ§ﬁi with Ruby (v. v. )J
9. 9. L 3‘. 5*-Eéiéit 5 D ¥test¥ntheory>irb -r ntheory. rb irb. ..> for i in l. .l00O00 irb. ..> puts "#li} is complete" if i. comp| ete? irb. ..> end 6 s complete 28 is complete 496 is complete 8128 is complete = > I . l00000 9 F§5lERuby%§§03 | 'li| .ZN)‘C0)ﬁ§ﬁi with Ruby (v. v. )J
10. 10. F §l. 7":75O7’: Z c‘: » Rubyl: l:Web’€= SC\$§| l7‘: “l‘tL‘L«’=72iL ! > ailiiztiliiiﬁ”. l§L\$L, ..t5o > ﬁ§‘iii’&%"'= ,S‘i0)l: . Rubyo‘Cﬁ*| l ! > iHi%~. ;§ﬁl:7J‘)75i#; f£l1't°. 7°El’7‘5E‘/7‘? 'ZatilZ%§El’~]l: §=i7l< ll: ?”*5:tl: t,E*3'C. Iﬁﬁhiiﬁiéo > '7‘—’5'£»7‘: <é/ ui§'r4‘o9rL%)o » IEiE7i. t.l_—. :7p. .: A;7:: §E—: ‘C%'%¥zb»5AJ7‘: “7:'375? » 5:57:95. \$iiiaea¢s~t= a=. !rFaiHizotEa%5ia7t; . :25», 10 |3ElERuby‘%7ﬁ03 | 'l: l:Li&)‘C0)ﬁ§ii‘i with Ruby (v. v. )J
11. 11. 11 ’ 4 * 4. r' ‘A-4:. — . —c. r_: . r—. _ V . ,1; 3 . . . 1 .1‘ . . ‘ ~. - »_. _' {I ; I;; . ‘ V . ll? ’ . 05;, ". _‘ ; "'i r ' . " —-—. ag. . ‘A it »‘ : --. _.. - . ... ... .* , . at . , — _. ——_. .q ‘ ‘ -. .. "" *1’ ~. ~L. -.a. .____ ' . ... . . . . _ : ’ ' - v n u 0‘, ._g _ " ’ . _ ii 4 1 -- . qz eeee _— . _,. .. F\$5lERuby%§§03 | 'li| .ZN)‘C0)ﬁ§ﬁi with Ruby (v. v. )J