The avatar for @emanuelfeld
Emanuel Feld
Published
Advent of Code 2018
Edited
Dec 10, 2018
Advent of Code 2018
[Day 25](https://adventofcode.com/2018/day/25)[Day 18](https://adventofcode.com/2018/day/18)[Day 21](https://adventofcode.com/2018/day/21)Day 19[Day 16](https://adventofcode.com/2018/day/16)[Day 14](https://adventofcode.com/2018/day/14)[Day 13](https://adventofcode.com/2018/day/13)[Day 12](https://adventofcode.com/2018/day/12)[Day 11](https://adventofcode.com/2018/day/11)[Day 10](https://adventofcode.com/2018/day/10)
[Day 9](https://adventofcode.com/2018/day/9)
[Day 8](https://adventofcode.com/2018/day/8)[Day 7](https://adventofcode.com/2018/day/7)[Day 6](https://adventofcode.com/2018/day/6)[Day 5](https://adventofcode.com/2018/day/5)[Day 4](https://adventofcode.com/2018/day/4)[Day 3](https://adventofcode.com/2018/day/3)Advent of Code: [Day 2](https://adventofcode.com/2018/day/2)[Day 1](https://adventofcode.com/2018/day/1)
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Deque.prototype.rotate = function rotate (n) {
if (n >= 0) {
for (let i = 0; i < n; i++) {
this.push(this.shift());
}
} else {
for (let i = 0; i > n; i--) {
this.unshift(this.pop());
}
}
}
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function solve (marbles, players) {
let scores = {};
let circle = new Deque([0]);

for (let m = 1; m <= marbles; m++) {
if (m % 23) {
circle.rotate(1);
circle.push(m);
} else {
circle.rotate(-7);
scores[m % players] = (scores[m % players] || 0) + m + circle.pop();
circle.rotate(1);
}
}

return Object.entries(scores).reduce(
(max, next) => max > next[1] ? max : next[1], 0);
}
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part1Score = solve(numMarbles, numPlayers)
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part2Score = solve(numMarbles * 100, numPlayers)
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Deque = require('denque@1.4.0/index.js').catch(() => window.Denque)
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