Maximum Beauty of an Array After Applying Operation - Sliding Window & Sorting [JS]

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Description 

Solution: Sliding Window & Sorting

Sort nums in asc order.
Maintain a sliding window with maximum difference of k * 2.
Record the longest length of the sliding window.

Time Complexity: O(n log(n))
Space Complexity: O(log(n)) (space for sorting)

var maximumBeauty = function(nums, k) {
  nums.sort((a, b) => a - b);
  let ans = 0, n = nums.length;
  for (let j = 0, i = 0; j < n; j++) {
    while (nums[j] - nums[i] > k * 2) i++;
    ans = Math.max(ans, j - i + 1);
  }
  return ans;
};
Location: Auckland, New Zealand

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