wordle helper

wordle-helper.js

const maskAll = (word, letter) => {
  let mask = 0;
  let i = -1;

  while (
    (i = word
      .split("")
      .reverse()
      .join("")
      .indexOf(letter, i + 1)) != -1
  ) {
    mask |= 1 << i;
  }

  return mask;
};

const text = await Deno.readTextFile("./words.txt");

const words = text.split("\n");

const filtered = words.filter((word) => {
  const letters = {};

  for (const [letter, { yellow = 0, green = 0, gray = 0 }] of Object.entries(
    letters
  )) {
    const mask = maskAll(word, letter);

    if (gray && mask & gray) return false;

    if (yellow && mask & yellow) return false;

    if (yellow && mask === 0) return false;

    if (green && (mask & green) !== green) return false;
  }

  return true;
});

const counts = [{}, {}, {}, {}, {}];

for (const word of words) {
  const chars = word.split("");

  for (let i = 0; i < chars.length; i++) {
    const char = chars[i];

    counts[i][char] ??= -1;

    counts[i][char]++;
  }
}

const ranked = {};

for (const word of words) {
  const chars = word.split("");

  ranked[word] = 0;

  for (let i = 0; i < chars.length; i++) {
    const char = chars[i];

    ranked[word] += counts[i][char];
  }
}

filtered.sort((a, b) => ranked[b] - ranked[a]);

for (const word of filtered.sort((a, b) => ranked[b] - ranked[a])) {
  console.log(word, ranked[word]);
}