Commentary of the LINE's Coding Test

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LINE > Kazuhiro Osawa / LINE Service Development Department1 2021( )

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> LINE > > / Agenda

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#01 LINE

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2190 300 2020/03/07

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> 6/$# $)% •Re-Challenge', > $# &$6/+ !#*5 > 94$$# " $18 > #$7 * LINE0(.32-

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> >

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https://www.youtube.com/watch?v=kpG3QSHCzPY https://www.slideshare.net/linecorp/line-80520817

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# !&' % )" ( $

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> 81$# $*% •Re-Challenge(- > $# '$81, !#+7 > ;6$$# " $3: > #$9 + LINE2)/54. & 0

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> >

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#02

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> LINE%!;43+: 8* > $#"7 > 95&2'-6 > %"&20,/51820, 1(.)-6*< ?

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> 4 • *2,-)% 1,.( 3#3 + > /'$!& • .(, ,*2.(, 0*2.(, -)% /, "/, /

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> ,*/(#5& > - +.$+) .4 > + 2'# > 3%1 0"!

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> $. , > ()+ 1 #"/ > & -'!*% !* ?

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> &/*,% > +3 (" ) > '!-4 . # ↑ 12/5 → +0$

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#03

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> )C#= *( •'%B •B!1., •-<)C)C&2=OK > >8+0 •46$ ?:8+9/ •=;3@233@ 7"5A

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> → >-%>5&*7 21 # +$)&*.6 ? > ;" $- A6<@/9 80 '-*),B =3!(-$)*4.6:?

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> &2 3.9,- > TDD8$ 0/7 > 4TDD(6 ' > 1+%#%%5!"%) :*

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> &* !+ > !$& !(#.+ > !,4/'% > (OOP+ ) 21)0 21 "-3

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> %).*6!%3 > % *6 5',0*6 > % +.*6#%*6 "$%2( > 2( 15',01 $/8:& > 4- %9 4-7

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> :7Web3!* &$2,FDQ > M=)%+#2%12"0? 12"0) %+ 9N6KDH!.2G4>5P7CK > IJL@ S8B)%+;A $(

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> LINE+32bQD48T • 75\ (30ZY[;! > K9dH=-)/'3)"?`^ "RM • X-)/'3)^ D4 K9dB • 0O"_ 1<-)/^ • 6L^J YUaC*$2#%/ V > :AdIcS • HGEW"F • .1,&@P1&N> ] D4

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#04

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> 6 • ,4,/+'"3,0* 3%5 - > 1)&!#( • 0*, .,40*, 2,40*, /+' 1, $ 1, 1

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> 1>815I'EDKBH • 2>:)J% .>;0 DK6 1>: 815I245I-5A'E&99 #! •235'E 34I'E =955I ?B +/ $

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Test case

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> ';H GI'(6:hh:mm:ss.fffxx.f')-8# )$! • hh00-99A7 > @C > +C;HJ)! > +C45?F&) > 1C>4,()"GI0.0-80 > 2C<= ) > 2.ECGI0.0%)!'; > 15C5*C-3/D &)9B

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> $.400"%4 > 57:@*,9 0*-=%4 > 2:@(57;:@1000m10200m).: 400m40"%4 > >:@(57;:@10200m ).: 350m40"%4 > 10km/h !<8657.?453940"%4 > -=%4. .?+'&%4A-1 ( %4 • /).(AM0.AM6.)30%( • .?(AM6.AM9.30# or PM18.AM0.)50%( -=74

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! 1000m 10200m 920 10900m 80 400 : 1400

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> =+hh:mm:ss.fffmsec2: > MS10 @/6;'BH(BC) > msec&- =RA37!#7*4" 5I > .F

> )$OK.F'B> > LHMS.F'B>DMS/QMS0( < P.F'B> > %NLH*4'B>%NLH=R.F'B>45 E %N

JF'B?N5IT8

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> 4ALR "1*1!1#(O > HGMF NQ •B7 ',% 6E5 > ;J, •("1)@:3 > 8HKF'1$P9 $/( +. -0(

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> 27?D,: *E6<.; > 6<A'B0A+3> > ,C=/( %"1 > 8&-!#2745)$ %! 279@*E<

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Thank you!