39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
const fs = require('fs');
|
|
const text = fs.readFileSync("./input.txt", "utf-8");
|
|
|
|
let lineIns = text.split('\n').map(line => line.split(','))
|
|
let linePoints = [];
|
|
|
|
for (let line = 0; line < 2; line++){
|
|
let points = [[0,0]];
|
|
for (let i = 0; i < lineIns[line].length; i++){
|
|
let segment = lineIns[line][i];
|
|
let dist = parseInt(segment.slice(1));
|
|
let axis = ((segment[0] == "R") || (segment[0] == "L")) ? 0 : 1;
|
|
let dir = ((segment[0] == "R") || (segment[0] == "U")) ? 1 : -1;
|
|
let coord = points[i];
|
|
coord[axis] += dir * dist;
|
|
coord.axis = axis;
|
|
points.push(coord.slice());
|
|
}
|
|
linePoints.push(points);
|
|
}
|
|
|
|
let closest = Infinity;
|
|
for (let i = 0; i < linePoints[0].length-1; i++) {
|
|
let segment0 = linePoints[0].slice(i, i+2);
|
|
let axis0 = linePoints[0][i].axis;
|
|
segment0.sort((a, b) => a[(axis0+1)%2] - b[(axis0+1)%2]);
|
|
for (let j = 0; j < linePoints[1].length-1; j++) {
|
|
let axis1 = linePoints[1][j].axis;
|
|
let segment1 = linePoints[1].slice(j, j+2);
|
|
segment1.sort((a, b) => a[(axis1+1)%2] - b[(axis1+1)%2]);
|
|
if (segment0[0][axis0] >= segment1[0][axis0] && segment0[1][axis0] <= segment1[1][axis0] &&
|
|
segment1[0][axis1] >= segment0[0][axis1] && segment1[1][axis1] <= segment0[1][axis1]) {
|
|
let cross = Math.abs(segment0[0][axis0]) + Math.abs(segment1[0][axis1]);
|
|
closest = closest < cross ? closest : cross;
|
|
}
|
|
}
|
|
}
|
|
console.log(closest);
|