103 lines
2.1 KiB
JavaScript
103 lines
2.1 KiB
JavaScript
const fs = require('fs/promises');
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const sum = (arr) => arr.reduce((total, num) => total+num, 0);
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const arrayOfLength = n => Array.from(Array(n).keys()).map(() => {});
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const modulo = (n, m) => ((n % m + m) % m);
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const keypress = async () => {
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process.stdin.setRawMode(true)
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return new Promise(resolve => process.stdin.once('data', data => {
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const byteArray = [...data]
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if (byteArray.length > 0 && byteArray[0] === 3) {
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console.log('^C')
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process.exit(1)
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}
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process.stdin.setRawMode(false)
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resolve()
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}))
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}
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const coords = ([x, y, z]) => `${x},${y},${z}`;
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const createNode = (arr, order, first, par, i = 0) => {
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};
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const runOp = (a, op, b) => {
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switch(op) {
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case "+":
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return a + b;
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case "-":
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return a - b;
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case "*":
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return a * b;
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case "/":
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return a / b;
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}
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throw(Error(`Op not found! - ${op}`));
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}
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const invertOp = (op) => {
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switch(op) {
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case "+":
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return "-";
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case "-":
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return "+";
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case "*":
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return "/";
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case "/":
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return "*";
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}
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};
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const inflateMonkeys = (monkeys, name) => {
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if(name === "humn") {
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return x => x;
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}
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const command = monkeys[name];
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const number = parseInt(command);
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if(!isNaN(number)) {
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return number;
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}
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const [_, aName, op, bName] = command.match(/([a-z]+) (.) ([a-z]+)/);
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const a = inflateMonkeys(monkeys, aName);
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const b = inflateMonkeys(monkeys, bName);
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if(typeof a === "function") {
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if(name === "root") {
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return a(b);
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}
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return other => a(runOp(other, invertOp(op), b));
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}
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if(typeof b === "function") {
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if(name === "root") {
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return b(a);
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}
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if(op === "/" || op === "-") {
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return other => b(runOp(a, op, other));
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}
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return other => b(runOp(other, invertOp(op), a));
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}
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return runOp(a, op, b);
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};
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const main = async () => {
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const monkeys = (await fs.readFile("./input.txt", 'utf8')).slice(0, -1).split("\n")
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.reduce((monkeys, row) => {
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const [_, name, command] = row.match(/([a-z]+): (.*)/);
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monkeys[name] = command;
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return monkeys;
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}, {});;
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const root = inflateMonkeys(monkeys, "root");
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console.log("root: ", root);
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}
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main();
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