Tim/adventofcode-2017
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Tim Stallard
2017-12-25 23:22:40 +00:00
parent d5fbba3277
commit 47510ec0ff
24 changed files with 2002 additions and 0 deletions
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1000
day20/input.txt Normal file
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day20/part1.js Normal file
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var input = require("fs").readFileSync("input.txt").toString();
var inputjson = "[{" + input.replace(/([a-z])=</g, "\"$1\": [").replace(/>/g, "]").replace(/\n/g, "},\n{").slice(0,-3) + "]";
var objects = JSON.parse(inputjson);
for(var i = 0; i < 1000; i++){
objects = objects.map(o=>{
o.v = o.v.map((v,x)=>(v + o.a[x]));
o.p = o.p.map((p,x)=>(p + o.v[x]));
return o;
});
}
var locations = objects.map(o=>(o.p));
var distances = locations.map((a)=>(a.map((b)=>(Math.abs(b))).reduce((b,c)=>(b+c))));
var maxdist = Math.min.apply(null, distances);
console.log(maxdist);
console.log(distances.indexOf(maxdist));

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day20/part2.js Normal file
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var input = require("fs").readFileSync("input.txt").toString();
var inputjson = "[{" + input.replace(/([a-z])=</g, "\"$1\": [").replace(/>/g, "]").replace(/\n/g, "},\n{").slice(0,-3) + "]";
var objects = JSON.parse(inputjson);
for(var i = 0; i < 10000; i++){
objects = objects.map(o=>{
o.v = o.v.map((v,x)=>(v + o.a[x]));
o.p = o.p.map((p,x)=>(p + o.v[x]));
return o;
});
var locations = objects.map(o=>(o.p));
var locationsStr = locations.map((a)=>(a.join(",")));
objects = objects.filter((a)=>(locationsStr.filter((b)=>(b==a.p.join(","))).length == 1));
console.log(objects.length);
}