Top full stack developer interview questions

function removeVowels(str) {
  return str.replace(/[aeiou]/gi, '');
}

function sumArray(arr) {
  return arr.reduce((a, b) => a + b, 0);
}

function reverseString(str) {
  return str.split('').reverse().join('');
}

function sortObject(obj) {
  return Object.keys(obj)
    .sort()
    .reduce((a, b) => {
      a[b] = obj[b];
      return a;
    }, {});
}

function factorial(n) {
  if (n === 0) {
    return 1;
  } else {
    return n * factorial(n - 1);
  }
}

function removeDuplicates(str) {
  return [...new Set(str)].join('');
}

function removeDuplicates(arr) {
  return [...new Set(arr)];
}

function toUpperCase(str) {
  return str.toUpperCase();
}

function reverseNumber(n) {
  return parseInt(n.toString().split('').reverse().join(''));
}