d08.ts

import { Day, RegisterDay } from "../Day.ts";

@RegisterDay(2015, 8)
export class Day08 extends Day {
  override partOne(): string {
    const data = this.readInput().split("\n");
    const result = calculate(data);

    return result.toString();
  }

  override partTwo(): string {
    const data = this.readInput().split("\n").map((item) => encode(item));
    const result = calculate(data);

    return result.toString();
  }
}

function encode(str: string): string {
  return '"' + str.replace(/\\/g, "\\\\").replace(/\"/g, '\\"') + '"';
}

function calculate(data: string[]): number {
  let codeChars = 0;
  let memoryChars = 0;

  data.forEach((item) => {
    codeChars += item.length;
    memoryChars += eval(item).length;
  });

  return (codeChars - memoryChars);
}