From cassido's March 6, 2023 Newsletter

scramble.ts

function scramble(sentences: string[]): string {
  return sentences
    .map((sentence) =>
      sentence
        .split(" ")
        .map((word) => {
          if (word.length <= 3) {
            return word;
          }

          const first = word[0];
          const middle = word.slice(1, word.length - 1);
          const last = word[word.length - 1];

          return first + shuffle(middle) + last;
        })
        .join(" ")
    )
    .join(" ");
}

function shuffle(word: string): string {
  return word
    .split("")
    .sort(() => Math.random() - 0.5)
    .join("");
}

console.log(scramble(["A quick brown fox jumped over the lazy dog."]));