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id, title, challengeType, dashedName
| id | title | challengeType | dashedName |
|---|---|---|---|
| 69bc6cb30c1d112a2e110a04 | Challenge 247: Last Letter | 28 | challenge-247 |
--description--
Given a string, return the letter from the string that appears last in the alphabet.
- If two or more letters tie for the last in the alphabet, return the first one.
- Ignore all non-letter characters.
--hints--
getLastLetter("world") should return "w".
assert.equal(getLastLetter("world"), "w");
getLastLetter("Hello World") should return "W".
assert.equal(getLastLetter("Hello World"), "W");
getLastLetter("The quick brown fox jumped over the lazy dog.") should return "z".
assert.equal(getLastLetter("The quick brown fox jumped over the lazy dog."), "z");
getLastLetter("HeLl0") should return "L".
assert.equal(getLastLetter("HeLl0"), "L");
getLastLetter("!#$ er@R asd fT.,> 2t0e9") should return "T".
assert.equal(getLastLetter("!#$ er@R asd fT.,> 2t0e9"), "T");
--seed--
--seed-contents--
function getLastLetter(str) {
return str;
}
--solutions--
function getLastLetter(str) {
const letters = str.split('').filter(char => /[a-zA-Z]/.test(char));
return letters.reduce((last, char) => char.toLowerCase() > last.toLowerCase() ? char : last);
}