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Day 5v2: 278

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Christoph Stahl 2021-12-05 15:45:05 +01:00
parent 4ce7a70666
commit aff7713c68
1 changed files with 6 additions and 7 deletions
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13
d5golf2.hs
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@ -1,8 +1,7 @@
import Data.List
m=map;(!)=splitAt
p[s,_,t]=m(m read.(&','))[s,t]
v[[a,b],[c,d]]=a==c||b==d
a&x|(u,_:v)<-break(==x)a=u:v&x|let=[a]
n[[x,y],[a,b]]|x/=a||y/=b=(x,y):n[[(x?a),(y?b)],[a,b]]|let=[(x,y)]
x1?x2|x1>x2=x1-1|x1<x2=x1+1|let=x1
main=interact$show.m(length.filter (>1).map length.group.sort.(n=<<)).(\x->[x,filter v x]).m(p.words).lines
m=map;l=length;f=filter
v[a,b]=or$zipWith(==)a b
x?y|x>y=x-1|x<y=x+1|let=x
z a|(x,_:y)<-break(<'.')a=m read[x,y]
n[f@[x,y],d@[a,b]]|x==a,y==b=[f]|let=f:n[[x?a,y?b],d]
main=interact$show.m(l.f(>1).m l.group.sort.(n=<<)).(\x->[x,f v x]).m(m z.f(>".").words).lines