QaisPalekar

function getOneKeyRowWords(listOfWords) {
 const row1 = ['q','w','e','r','t','y','u','i','o','p'],
 row2 = ['a','s','d','f','g','h','j','k','l'],
 row3 = ['z','x','c','v','b','n','m'];
 return listOfWords.filter((word) => {
     const uniquesChars = new Set(word.toLowerCase());
     return (
         row1.length === [...new Set([...row1, ...uniquesChars])].length ||
         row2.length === [...new Set([...row2, ...uniquesChars])].length ||
         row3.length === [...new Set([...row3, ...uniquesChars])].length

QaisPalekar

function isFactorial(num) {
    let remainder = num;
    let factorial = 2;
    while(remainder >= factorial) {
        remainder = remainder/factorial;
        factorial++;
    }
    return remainder===1;
}

QaisPalekar

Cheat Sheet

Headings