History

day 3 solutions

Sigrid Solveig Haflínudóttir committed 4 years ago

Commit a68f0de1 parent dab31533 files · +22 −5Browse files

Unified · Split

3 files
  1. 2021/03-01.awk +1 −0
  2. 2021/03-02.awk +10 −0
  3. README.md +11 −5
2021/03-01.awk+1−0
@@ -0,0 +1 @@
1+BEGIN{FS=""}{for(k=1;k<=NF;k++)b[k,$k]++}END{for(i=1;i<k;i++)for(t=0;t<2;t++)x[t]=x[t]*2+(b[i,0]>b[i,1])-t;print-x[0]*x[1]}
2021/03-02.awk+10−0
@@ -0,0 +1,10 @@
1+BEGIN{q["m"]=q["l"]=FS=""}
2+{x=0;for(k=1;k<=NF;k++)w["m"NR]=w["l"NR]=x=x*2+(b["m"NR,k]=b["l"NR,k]=!!$k)}
3+END{
4+ for(i=1;i<k;i++)for(p in q){
5+ delete r;y=n=0;
6+ for(j in w)if(j~p){y+=r[j]=b[j,i];n++}
7+ if(n>1)for(j in r)if(r[j]!=(p~"m"?y*2>=n:y*2<n))delete w[j]
8+ }
9+ x=1;for(t in w)x*=w[t];print x
10+}
README.md+11−5
@@ -7,8 +7,14 @@ Advent of code with AWK · 6 unmodified lines
77 ## Stats
88
99 ; wc -c 2021/*.awk
10− 30 2021/01-01.awk
11− 59 2021/01-02.awk
12− 45 2021/02-01.awk
13− 53 2021/02-02.awk
14− 187 total
10+ 30 2021/01-01.awk
11+ 59 2021/01-02.awk
12+ 45 2021/02-01.awk
13+ 53 2021/02-02.awk
14+ 124 2021/03-01.awk
15+ 297 2021/03-02.awk
16+ 608 total
17+
18+Formatting is left as an exercise for the reader.
19+
20+Enjoy. Or not.

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