6205. Count Number of Distinct Integers After Reverse Operations

https://leetcode.com/contest/weekly-contest-315/problems/count-number-of-distinct-integers-after-reverse-operations/

• Contest 315

Python

class Solution:
    def countDistinctIntegers(self, nums: List[int]) -> int:
        nums = set(nums)
        rev_nums = set()

        for num in nums:
            rev = list(str(num))
            rev.reverse()
            rev_nums.add(int(''.join(rev)))
        return len(nums | rev_nums)