day 3 solutions

Sigrid Solveig Haflínudóttir committed 4 years ago

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

Unified · Split

3 files

2021/03-01.awk +1 −0
2021/03-02.awk +10 −0
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"?y2>=n:y2<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
7	## Stats	7	## Stats
8		8
9	; wc -c 2021/*.awk	9	; wc -c 2021/*.awk
10	30 2021/01-01.awk	10	30 2021/01-01.awk
11	59 2021/01-02.awk	11	59 2021/01-02.awk
12	45 2021/02-01.awk	12	45 2021/02-01.awk
13	53 2021/02-02.awk	13	53 2021/02-02.awk
14	187 total	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.