Find All Lonely Numbers in the Array

class Solution:
    def findLonely(self, nums: List[int]) -> List[int]:
        nums.sort()
        n = len(nums)
        ans = []
        for i in range(n):
            if (i==0 or nums[i]-nums[i-1] > 1) and (i==n-1 or nums[i+1]-nums[i] > 1):
                ans.append(nums[i])
        return ans