adventofcode-2016/day02/part2.js
2016-12-02 13:03:11 +00:00

36 lines
825 B
JavaScript

var board = [
{"0": 1},
{"-1": 2, "0": 3, "1": 4},
{"-2": 5, "-1": 6, "0": 7, "1": 8, "2": 9},
{"-1": "A", "0": "B", "1": "C"},
{"0": "D"}
];
var moves = {
U: [-1, 0],
D: [1, 0],
L: [0, -1],
R: [0, 1],
}
var pos = [2, -2];
var locations = [];
var fs = require("fs");
var input = fs.readFileSync("input.txt").toString().replace(/\r/g, "");
input.split("\n").slice(0, -1).forEach(function(line){
if(line){
line.split("").forEach(function(char){
if(char){
var move = moves[char];
var newpos = pos.map((a, x)=>(a + move[x]));
if(board[newpos[0]]){
if(board[newpos[0]][newpos[1]]){
pos = newpos;
}
}
}
});
}
console.log(board[pos[0]][pos[1]]);
locations.push(board[pos[0]][pos[1]]);
});
console.log(locations.join(""));