--description--

Given an array, return the second largest distinct number.

--hints--

secondLargest([1, 2, 3, 4]) should return 3.

assert.equal(secondLargest([1, 2, 3, 4]), 3);

secondLargest([20, 139, 94, 67, 31]) should return 94.

assert.equal(secondLargest([20, 139, 94, 67, 31]), 94);

secondLargest([2, 3, 4, 6, 6]) should return 4.

assert.equal(secondLargest([2, 3, 4, 6, 6]), 4);

secondLargest([10, -17, 55.5, 44, 91, 0]) should return 55.5.

assert.equal(secondLargest([10, -17, 55.5, 44, 91, 0]), 55.5);

secondLargest([1, 0, -1, 0, 1, 0, -1, 1, 0]) should return 0.

assert.equal(secondLargest([1, 0, -1, 0, 1, 0, -1, 1, 0]), 0);

function secondLargest(arr) {

  return arr;
}

function secondLargest(arr) {
  const unique = [...new Set(arr)];
  unique.sort((a, b) => b - a);
  return unique[1];
}