d05.ts

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

@RegisterDay(2015, 5)
export class Day05 extends Day {
  override partOne(): string {
    let naughty_str: Array<string> = ["ab", "cd", "pq", "xy"];
    let vowels: Array<string> = ["a", "e", "i", "o", "u"];
    let niceWords: number = 0;

    for (let str of this.readInput().split("\n")) {
      if (naughty_str.filter((item) => str.indexOf(item) != -1).length > 0) {
        continue;
      }

      let vowelsCount = 0;
      let containsConsecutive = false;
      for (let i = 0; i < str.split("").length; i++) {
        if (vowels.includes(str[i])) vowelsCount++;

        if (i != 0 && !containsConsecutive) {
          if (str[i] == str[i - 1]) containsConsecutive = true;
        }
      }

      if (vowelsCount >= 3 && containsConsecutive) {
        niceWords++;
      }
    }

    return niceWords.toString();
  }

  override partTwo(): string {
    let niceWords: number = 0;

    for (let str of this.readInput().split("\n")) {
      let check_1 = false;
      let check_2 = false;
      for (let i = 0; i < str.split("").length; i++) {
        if (i == 0) continue;

        const repeat = str.match(new RegExp(str.substr(i - 1, 2), "g"));
        if (repeat != null && repeat.length > 1) {
          check_1 = true;
        }

        if (i > 1 && str[i] == str[i - 2]) {
          check_2 = true;
        }
      }

      if (check_1 && check_2) {
        niceWords++;
      }
    }

    return niceWords.toString();
  }
}