text: class Solution:
      def numLength(self, n):
          count = 0
          while n:
              n //= 10
              count += 1
          return count
          
      def findNumbers(self, arr: List[int]) -> int:
          count = 0
          for a in arr:
              if not self.numLength(a) & 1:
                  count += 1
          return count
  