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Added day 1

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Tim Stallard 2016-12-01 10:46:02 +00:00
commit f072a6de0d
2 changed files with 32 additions and 0 deletions
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7
day01/part1.js Normal file
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var moves = [[1, 0], [0, -1], [-1, 0], [0, 1]];
var coords = [0, 0];
var input = "R1, R1, R3, R1, R1, L2, R5, L2, R5, R1, R4, L2, R3, L3, R4, L5, R4, R4, R1, L5, L4, R5, R3, L1, R4, R3, L2, L1, R3, L4, R3, L2, R5, R190, R3, R5, L5, L1, R54, L3, L4, L1, R4, R1, R3, L1, L1, R2, L2, R2, R5, L3, R4, R76, L3, R4, R191, R5, R5, L5, L4, L5, L3, R1, R3, R2, L2, L2, L4, L5, L4, R5, R4, R4, R2, R3, R4, L3, L2, R5, R3, L2, L1, R2, L3, R2, L1, L1, R1, L3, R5, L5, L1, L2, R5, R3, L3, R3, R5, R2, R5, R5, L5, L5, R2, L3, L5, L2, L1, R2, R2, L2, R2, L3, L2, R3, L5, R4, L4, L5, R3, L4, R1, R3, R2, R4, L2, L3, R2, L5, R5, R4, L2, R4, L1, L3, L1, L3, R1, R2, R1, L5, R5, R3, L3, L3, L2, R4, R2, L5, L1, L1, L5, L4, L1, L1, R1";
var steps = input.replace(/L/g, "R0, R0, R").split(", ").map((a)=>parseInt(a.substr(1)));
var finalCoords = steps.map((a, i)=>[moves[i%4][0] * a, moves[i%4][1] * a]).reduce((a, b)=>[a[0] + b[0], a[1] + b[1]], [0, 0]);
var distance = finalCoords.map(Math.abs).reduce((a, b)=>(a + b));
console.log(distance);

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day01/part2.js Normal file
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var moves = [[1, 0], [0, -1], [-1, 0], [0, 1]];
var coords = [0, 0];
var input = "R1, R1, R3, R1, R1, L2, R5, L2, R5, R1, R4, L2, R3, L3, R4, L5, R4, R4, R1, L5, L4, R5, R3, L1, R4, R3, L2, L1, R3, L4, R3, L2, R5, R190, R3, R5, L5, L1, R54, L3, L4, L1, R4, R1, R3, L1, L1, R2, L2, R2, R5, L3, R4, R76, L3, R4, R191, R5, R5, L5, L4, L5, L3, R1, R3, R2, L2, L2, L4, L5, L4, R5, R4, R4, R2, R3, R4, L3, L2, R5, R3, L2, L1, R2, L3, R2, L1, L1, R1, L3, R5, L5, L1, L2, R5, R3, L3, R3, R5, R2, R5, R5, L5, L5, R2, L3, L5, L2, L1, R2, R2, L2, R2, L3, L2, R3, L5, R4, L4, L5, R3, L4, R1, R3, R2, R4, L2, L3, R2, L5, R5, R4, L2, R4, L1, L3, L1, L3, R1, R2, R1, L5, R5, R3, L3, L3, L2, R4, R2, L5, L1, L1, L5, L4, L1, L1, R1";
var steps = input.replace(/L/g, "R0, R0, R").split(", ").map((a)=>parseInt(a.substr(1)));
var locations = [];
function addCoord(x, y){
if(!locations[x]){
locations[x] = [];
}
if(!locations[x][y]){
locations[x][y] = 0;
}
locations[x][y]++;
}
var coords = [0, 0]
for(var step in steps){
for(var i = 0; i < steps[step]; i++){
coords = [coords[0] + moves[step%4][0], coords[1] + moves[step%4][1]];
addCoord(coords[0], coords[1]);
if(locations[coords[0]][coords[1]] == 2){
console.log(coords);
console.log(coords.map(Math.abs).reduce((a, b)=>(a + b)));
}
}
}