Day6.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AdventOfCode2016
{
    class Day6
    {



        public static string Part1()
        {
            string ret = "";

            foreach (var col in transposeInput())
            {
                ret += col.GroupBy(c => c).OrderBy(g => g.Count()).Select(g => g.Key).First();
            }

            return ret;
        }

        static IEnumerable<IEnumerable<char>> transposeInput()
        {
            string[] lines = input.Replace("\r", "").Split('\n');

            for (int i = 0; i < lines[0].Length; i++)
            {
                yield return lines.Select(l => l[i]);
            }
        }

        static string testinput =
@"eedadn
drvtee
eandsr
raavrd
atevrs
tsrnev
sdttsa
rasrtv
nssdts
ntnada
svetve
tesnvt
vntsnd
vrdear
dvrsen
enarar";

        static string input =
@"cqvkxhip
tgswqbjh
ymbqjoau
yakqfnvb
klwpoxak
ebftersc
muhqajoy
sttjluap
nbfrccxf
pjtxsrdt
pcehiulx
imtchqqu
shtdcptu
gziwdtvt
gkisoote
dmodaoyb
mqykfphl
rchfhsxr
expmfmmi
eyyjzupd
ysoqeeib
phedgslu
xmwituwf
cibvkswh
dusqdmkm
oajlhpcj
nqbvrtsv
eytohbvb
byjvrycg
oorhjlll
bflfjdaz
wtydcsem
xinelpsx
bkrenkkc
kuhljsqo
fhkrtpkg
qkiohori
rzebhkwv
prpldmyf
dstdrxbo
jgtenhmc
vpibddhk
nkytfkno
hldsxaoq
qgwusrkd
xlsuudux
buxfxaiy
uljrvuen
awoyppai
igplagub
kqfiefgc
cqjukquf
djxuuizu
zvuetjli
uwcrclvy
gtdlktiv
cvwbsaxj
zpwzzepj
vmdmkgqz
qfsxdnrf
mhqtikwv
fduxoluy
emhhanfc
zglqrchc
jvvjspsu
rndsqnky
itzjeqfr
lnpslqsj
yxohoogq
oqmmzizo
ginjbszz
qhdnjnxs
mjtbhrzl
zorxielb
xflyknux
xrssqfpx
tcvrpzxn
sgnholch
nlpbrofn
qclukwkr
foylzchc
hieqxicp
nqvwnhpt
ssubumix
vtbpattp
ncgmzjmv
wtzedksg
mvlatfbj
ithfpwgr
dmqvfilt
lbnovpit
hqfzxflr
pgeeancn
rpdiwwle
ehkipwnx
pncgkqey
chzakbif
doooixwk
xztjzzrs
vhyqtnja
cbzmragf
rxqhsehw
rxzuqnoy
kvldlabx
crsslumd
cbxmypaq
qzevgrco
teiavilb
yjuhsfkj
asutrkwn
csgkdxtw
fbdppqjn
ivaewkpq
iznlnknb
btxpvjxk
rrpatocg
yxgkxenm
yrszvqpo
olhjkcac
dmaxpvog
wzicsunc
eoaozekn
oqbcrcje
jjpcwqae
zlyibfto
nkkarjbd
rrsrbrlr
gllxvuve
pkanrgds
bylfpxdm
tzkvedot
eidxawif
nwvcofjz
xkfverdu
wgncgvvy
epwrztow
mybcqyza
arxfmrfd
utcbwrta
iwdfihgp
tkskahas
vvkmupxb
ffetjcgu
nmaoaihp
wilheaug
pmshnqgg
pzbjnbtw
zlxbrzhz
xwikirug
rprmighu
xaaaioxr
mqxpjfgw
ejhezvgh
brjmtonm
wskkweze
kkaxuuib
mdrbckzy
idpwlzfg
fqfdktuq
jnurlaba
bbgftoqt
sgiuadsr
pwzcfnir
mytlszbv
uxcwljqs
lyrangoq
lnmbpgej
qjjugsps
kptbbita
sppvfzzw
ghkleimh
aupnupvy
tzxtqzev
dbcyghnu
qaygxqjo
vgscfmwb
raoylhwp
gewyhjjh
bsozmyma
skpkdxcx
qcngjsxk
xlznquqa
tztogrtf
bvnovdaf
crlrvjsq
afbpxgwl
gwbeomez
aezkolyv
cooulafb
dnrsyvda
ljudufiz
ctwxlryc
djmebdhh
ktoaoxmd
afqaqbbj
mobvjjyk
yplopnti
kwkqjzol
fcvncctm
pkbzlejz
axxxbdqj
gnjurhkl
qakjwsvw
vkoagapm
tpeyuvqi
omejmbtw
yhitogvj
ybpwtcvb
xtnuyfyh
isvpwgza
ozdntafh
hysgmgvh
zbgkvytj
fntphlnd
xjyujmbw
uvnhgphl
decpnkwq
kmkepzcp
lwegdttv
epkpsehc
uouovxth
agvppzan
zxllwuvw
ektemcjl
zegwoyif
hqhrdyzq
qiyxumhk
trbebaka
etjxsihf
yxjgfvnf
joywcwmz
teeqmoik
qjknvrmq
avpxxuni
naemzbma
jpbxexkk
ifevcqzn
tcnibepd
yzppffml
xhqgnbqc
lvvopbzw
pnzmeuon
ovzzvvsh
mcqmuqjp
oadvyhfk
tkgnxpyy
mvbisygc
occsftic
fawfwbvy
hqmqpuam
ptjxkjtk
hzxuosye
zingpdhg
jiombirp
vjtvrses
fdlzglxq
ggooqynz
fmwotljx
mnzzmfro
vtvjvcqu
kmpiufet
hwsvlelq
wdenjddo
gfqtffby
cxneiwee
wtribxye
gvuszzzu
pugjyrqp
yewglqml
beqgcrqn
azmucset
kicbbxtu
bmihylgt
edjrinqf
vvdretyn
zkakzfkp
qbraqzwo
ujpgjzdc
hdobaxgr
atghhhaw
ouucgcws
iodycvik
ljjdonpe
nnekdlaz
lbrzjrkn
jjwewnji
tfdkekdf
eidbjaiz
hssryuot
oajvmyuj
fziqlofo
uisyryfh
ssucyqxa
wyvmbyuq
fomhuool
scyogldx
uznjymzz
tnmfndhu
wmaiqhjd
jrtvsvys
zpgdzcdw
rpzjgslv
uulfdwba
gfctmdso
jcqqmnxe
hbzxgupz
zbhofhjo
szmkzygs
ydsnzkwe
djbctccs
utqjhlzr
dslwhsra
ujxkxald
panonqfl
brhfqycu
adewetuw
rzsxqpyd
ypfaxikk
vgoncwxp
kqcrmyil
vwsswwlt
bjxktjpi
lyzyaehh
noccjwkt
volhauxw
zeeaczxk
cgiyzqtg
wrflucju
mupwfuwq
tlgvwoqm
laybkcqh
mawgcbyq
ofuaudem
gtkhbeuu
svrzwaxw
ohqiojux
mnmttbve
jlluhifp
zuhdfnaq
hsedbspi
rkqoshpx
qzvdlvuc
rwbglsly
djpwgibn
edzgvmws
teacriww
gcvzijna
llokdnqu
dkywadmh
madxishe
feharxjj
sqzpbcgu
ohmflgzd
qrrsyggg
sxxrafvs
xnaterpk
tdiytzmh
wecsvxnm
uiksxtzm
ypqpajdd
fyaoughg
epvdtbni
pyynubyw
dpjdgbaf
vlomtyym
zpitxkwr
tzclhsoz
wduicuqg
sltpfxwo
iyrmivtk
hdmfndbx
znqwrzrs
fxktgznx
indnyerl
airalvum
jfsfyysy
svztyezl
qsjpktkb
xfujksji
jkymepzm
lrtlztdg
nluspned
huwocmgk
nygyugbk
ryzsjezz
uxwwczou
awrcdzad
tobynxxz
swicrqsv
jqywnfns
kdzvcwmh
gogmydcr
dkcuvthh
hkmraojf
kcgbpskp
qgknjgtt
oywbqczg
oiqpwmcv
fxjrhvce
laaizayr
xfcldeuu
govaqtom
dbcymhvq
yjzeuyxc
sejtfvqn
pbvavgov
tpitipok
lnfxhraz
whbqsgli
beuhoifp
pojyvmuz
yynnekkn
nxggwods
nkhpvkct
rcxwiluq
gnhsygno
nwwgewiu
kcbqnvcb
jiisqtqt
dochmmei
cwmwfrwl
hcautqpg
oihxktet
yrcekmmv
lxoyyqxp
vlbvilra
uqnsdjdf
jadyopgr
iwunbaps
wrplbwpj
shfuglla
knhgmlsg
riknnrmg
hoxzmvsr
qvqdqxrv
lyyvpffj
ghhflirv
khmzdart
qixervoz
fdgemrrn
uvnbxxpz
lqvanhjt
umorijwr
sgogttye
jlfgdzoc
barxtobf
czrzjduo
vlgkvnek
prknsjfr
uleiwboe
mxaswrft
ihqcepmh
awfqxael
hqvzrkbw
zwvciodj
czyrbdhq
ixhfswys
ndauoxcn
lhhwxiry
adpagord
suuxfdnq
nynlzhfj
ffmwgpyj
idbgnwev
wuculiup
cymyvkgm
fifqbhvs
ijxfzmrq
hugjbhin
aeffbcfp
ywxtejmz
qpprytsg
kcmlmbeo
ruomfeex
vvtpcfnk
zcihodib
nnfoffoi
rmldwivo
ejrzqyln
ifnjdpab
abiidqmo
aglmsjkr
xwqghpda
gufhhjer
ubjzhfgj
glhagkrm
wiwhahqd
lbyhcebg
ahhhxupc
dulzuzyi
xxdqhiod
ydkrksxo
pgdazjfi
ebrjoyrr
maejpwkm
xekimgsi
jvntcosc
wrfiyvmb
hfgzughl
wgbwylwl
tpjgkkye
wsspddss
ctoyeuvv
skjcqabz
wfutxuew
oqymawht
xeqmpvcm
hrmflsjx
rstnycbh
aavqqxcc
ouawtykt
kmxcjxxe
heudiqlo
srmiwwrw
ufavnfdy
xfokmkax
vnzztetb
goevrbmb
wfkthpfj
ddesetaa
vygkqvdn
qsyemmqr
iqlyiqtx
esvuchui
pfslklic
genqjcpi
bumqsxkx
msvbjoip
lghjsxdw
elukpmbf
qmipavgm
iafoaecd
usidajnf
vxsymknf
oyfjsysv
mpwtxlvv
kogsobli
jmgwktdj
rgztrmby
dnrcfisj
ottnehjl
zsqbinds
zmufvgrd
fcalplxx
jcwqwnvm
myjowlcd
nodixwaa
phfnpbve
kexcgape
ldmlswbk
naxeikbg
cgmlnbsb
vuwbdcnb
bwxbhmgy
ziadnccv
bacypeeq
tbluknup
btanytry
bqddnwwl
urieqmyv
csrdslqa
fsfiyiai
ceasodly
jetpbhos
xcqzgosd
ydqiuyzh
vxpzumjp
ruwlxvle
exrrmafx
kbfikzdl
bhvvzgfn
ivckwbga";
    }
}