freecodecamp--freecodecamp/curriculum/challenges/english/blocks/daily-coding-challenges-javascript/698a1a73ade5ac0e19180fa3.md

id, title, challengeType, dashedName

id	title	challengeType	dashedName
698a1a73ade5ac0e19180fa3	Challenge 200: Letter and Number Count	28	challenge-200

--description--

Given a string, return a message with the count of how many letters and numbers it contains.

• Letters are A-Z and a-z.
• Numbers are 0-9.
• Ignore all other characters.

Return "The string has X letters and Y numbers.", where "X" is the count of letters and "Y" is the count of numbers. If either count is 1, use the singular form for that item. E.g: "1 letter" instead of "1 letters" and "1 number" instead of "1 numbers".

--hints--

countLettersAndNumbers("helloworld123") should return "The string has 10 letters and 3 numbers.".

assert.equal(countLettersAndNumbers("helloworld123"), "The string has 10 letters and 3 numbers.");

countLettersAndNumbers("Catch 22") should return "The string has 5 letters and 2 numbers.".

assert.equal(countLettersAndNumbers("Catch 22"), "The string has 5 letters and 2 numbers.");

countLettersAndNumbers("A1!") should return "The string has 1 letter and 1 number.".

assert.equal(countLettersAndNumbers("A1!"), "The string has 1 letter and 1 number.");

countLettersAndNumbers("12345") should return "The string has 0 letters and 5 numbers.".

assert.equal(countLettersAndNumbers("12345"), "The string has 0 letters and 5 numbers.");

countLettersAndNumbers("password") should return "The string has 8 letters and 0 numbers.".

assert.equal(countLettersAndNumbers("password"), "The string has 8 letters and 0 numbers.");

--seed--

--seed-contents--

function countLettersAndNumbers(str) {

  return str;
}

--solutions--

function countLettersAndNumbers(str) {
  let letterCount = 0;
  let numberCount = 0;

  for (let char of str) {
    if ((char >= 'A' && char <= 'Z') || (char >= 'a' && char <= 'z')) {
      letterCount++;
    } else if (char >= '0' && char <= '9') {
      numberCount++;
    }
  }

  const letterWord = letterCount === 1 ? "letter" : "letters";
  const numberWord = numberCount === 1 ? "number" : "numbers";

  return `The string has ${letterCount} ${letterWord} and ${numberCount} ${numberWord}.`;
}