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  1. Practice
  2. Algorithms
  3. Implementation
  4. Beautiful Days at the Movies
  5. Discussions

Beautiful Days at the Movies

  • coslic + 1 comment

    Nice, but I don't like the entaglement in beautifulDays of the looping through range with the algorithm itself that decides to put an 1 or not depending on the (day - reverse of the day) is divisible or not by k. I would disentangle the looping and the filtering by the problem condition in 2 separate functions, and the algorithm will become more readable.

    • Kostyantin_Kon + 1 comment

      Like I did?

      def reverse(n):

      m = 0

while n != 0:

    m = 10

    m += n % 10

    n = n // 10

print(m)

return m

      def beautifulDays(i, j, k):

      a = range(i,j+1)      

return sum([1 for x in a if abs(x-reverse(x)) % k == 0])*