Mercurial > hg > aoc
changeset 21:f1f0220b5f7c
day 16: simply loop
author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
---|---|
date | Sat, 16 Dec 2017 23:47:26 -0500 |
parents | 8d1edc9efcb4 |
children | 4e7e7835f1db |
files | 2017/day16.d |
diffstat | 1 files changed, 4 insertions(+), 7 deletions(-) [+] |
line wrap: on
line diff
--- a/2017/day16.d +++ b/2017/day16.d @@ -29,13 +29,10 @@ } auto iteratePerm(string[] ops, string progs) { - string[] seenprogs = [progs]; - string result = progs; - while(true) { - result = ops.parseOps(result); - if(seenprogs.canFind(result)) { - break; - } + string[] seenprogs; + for(string result = progs; + !seenprogs.canFind(result); + result = ops.parseOps(result)) { seenprogs ~= result; } return seenprogs[1_000_000_000 % seenprogs.length];