Airwrk Live Coding Problem

app.js

function checkPalindrome(str) {
  let tempStr = str;
  let j = 0;
  for (let i = tempStr.length - 1; i >= 0; i--, j++) {
    if (tempStr[i] !== str[j]) {
      return false;
    }
  }
  return true;
}
// console.log(checkPalindrome("abbc"));
// console.log(checkPalindrome("abba"));
// console.log(checkPalindrome("a"));
// console.log(checkPalindrome(""));

function checkMissing(arr) {
  if (arr.length == 0) return [0];
  let max = Math.max(...arr);
  let min = Math.min(...arr);

  while (max >= min) {
    if (!arr.includes(min)) {
      return [min];
    }
    min++;
  }

  return [min];
}
// console.log(checkMissing([]));
// console.log(checkMissing([3, 0, 1]));

function sortArr(arr) {
  let j = 0;
  for (let i = 0; i < arr.length; i++) {
    if (arr[i] == arr[i + 1]) {
      continue;
    }
    arr[j] = arr[i];
    j++;
  }
  return arr;
}

// console.log(sortArr([1, 1, 2, 3, 3, 3, 4, 4, 5, 6]));
// console.log(sortArr([1, 1, 2]));
// console.log(sortArr([1, 2, 2, 3]));