const util = require("util"); const input = [ "", "", "", "", ]; class Vector3 { /** * A 3D vector * * @param {number} x The X value of this vector * @param {number} y The Y value of this vector * @param {number} z The Z value of this vector */ constructor(x, y, z) { this.x = x; this.y = y; this.z = z; } /** * Add another vector to this one * * @param {Vector3} operand The vector to add to this one * @returns {void} */ add(operand) { this.x += operand.x; this.y += operand.y; this.z += operand.z; } } /** * Find the gravitational influence two moons have on each other * * @param {Vector3} moonA The first moon to consider * @param {Vector3} moonB The second moon to consider * * @returns {void} */ function calculateGravity(moonA, moonB) { // The gravitational pull on Moon A caused by Moon B const gravityA = new Vector3( // eslint-disable-next-line no-nested-ternary moonB.x > moonA.x ? 1 : (moonB.x < moonA.x ? -1 : 0), // eslint-disable-next-line no-nested-ternary moonB.y > moonA.y ? 1 : (moonB.y < moonA.y ? -1 : 0), // eslint-disable-next-line no-nested-ternary moonB.z > moonA.z ? 1 : (moonB.z < moonA.z ? -1 : 0), ); } /** * @param {string[]} inputs The day's input * @returns {Vector3[]} An array of Vector3's representing the positions of moons */ function parseInput(inputs) { const moons = []; const parseRegex = new RegExp(/x=(-?\d+), y=(-?\d+), z=(-?\d+)/); for (const position of inputs) { // eslint-disable-next-line no-shadow-restricted-names const [undefined, x, y, z] = position.match(parseRegex); moons.push(new Vector3(parseInt(x, 10), parseInt(y, 10), parseInt(z, 10))); } return moons; } console.log(util.inspect(parseInput(input)));