todo.txt

// This function gets the input of words in a <textarea id="data">
// and puts them into an array, splitting by newline

$(function () {
    var lines = [];
    $.each($('#data').val().split(/\n/), function (i, line) {
        if (line) {
            lines.push(line);
        }
    });
    console.log(lines);
});


// Here is one possible way to write a JavaScript function that takes the first letter of each word in a sentence to form a new word:

function acronym(sentence) {
  // Split the sentence into an array of words
  const words = sentence.split(" ");

  // Create an empty array to store the acronym
  const acronym = [];

  // Loop through the words and get the first letter of each word
  for (const word of words) {
    acronym.push(word[0]);
  }

  // Join the letters in the acronym array and return the result
  return acronym.join("");
}

// Example usage
const result = acronym("Significant Eastern City of North Dakota");
console.log(result); // Output: SECOND



// Find similar pairs from a collection of words

function singleLetterPairs(words) {
  // Create an empty array to store the pairs
  const pairs = [];

  // Loop through the words and compare each word to every other word
  for (let i = 0; i < words.length; i++) {
    for (let j = 0; j < words.length; j++) {
      // Check if the words are not the same word and have only one letter different
      if (i !== j && diff(words[i], words[j]) === 1) {
        // Add the pair to the array
        pairs.push([words[i], words[j]]);
      }
    }
  }

  // Return the array of pairs
  return pairs;
}

// Helper function to count the number of differences between two words
function diff(a, b) {
  let diff = 0;
  for (let i = 0; i < a.length; i++) {
    if (a[i] !== b[i]) {
      diff++;
    }
  }
  return diff;
}

// Example usage
const words = ["tour", "force", "nom", "plume", "sour", "forte", "non", "plumb"];
const pairs = singleLetterPairs(words);
console.log(pairs); // Output: [["tour", "sour"], ["force", "forte"]]