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| author | Christian Neukirchen <chneukirchen@gmail.com> | 2015-12-10 14:26:15 +0100 |
|---|---|---|
| committer | Christian Neukirchen <chneukirchen@gmail.com> | 2015-12-10 14:26:15 +0100 |
| commit | 7dcc57442fcbaa83e40bf5f832799e235b6b2f57 (patch) | |
| tree | 0afbf081c9345105b2aeaa9386a4d3cfe6c00a62 | |
| parent | 4af2965c747210abb8ca2a405b45bcd1e513074e (diff) | |
| download | adventofcode2015-7dcc57442fcbaa83e40bf5f832799e235b6b2f57.tar.gz adventofcode2015-7dcc57442fcbaa83e40bf5f832799e235b6b2f57.tar.xz adventofcode2015-7dcc57442fcbaa83e40bf5f832799e235b6b2f57.zip | |
day10
| -rw-r--r-- | day10.k | 15 | ||||
| -rw-r--r-- | day10.rb | 13 |
2 files changed, 28 insertions, 0 deletions
diff --git a/day10.k b/day10.k new file mode 100644 index 0000000..0b86ba8 --- /dev/null +++ b/day10.k @@ -0,0 +1,15 @@ +d:"1113122113" + +/ r:{o:(x=*x)?0;:[o=#x;,x;(,(o#x)),_f[o _ x]]} +r:{(0,1+&~=':x) _ x} / group consecutive elements + +l:{,/ {($#x),*x}' r x} / look-and-say, 1 step + +s:(40 l/d) + +v: #s + +s:(10 l/s) / 10 more steps +/ for some reason this takes ages... + +v: #s diff --git a/day10.rb b/day10.rb new file mode 100644 index 0000000..a429aff --- /dev/null +++ b/day10.rb @@ -0,0 +1,13 @@ +def ls(s) + n = "" + s.scan(/(\d)\1*/) { + n << "#{$&.size}#{$1}" + } + n +end + +d = "1113122113" +40.times { d = ls(d) } +p d.size +10.times { d = ls(d) } +p d.size |