new_contents: """Leetcode 190. Reverse Bits
  Easy
  
  URL: https://leetcode.com/problems/reverse-bits/
  
  Reverse bits of a given 32 bits unsigned integer.
  
  Example 1:
  Input: 00000010100101000001111010011100
  Output: 00111001011110000010100101000000
  Explanation: The input binary string 00000010100101000001111010011100
  represents the unsigned integer 43261596, so return 964176192 which its
  binary representation is 00111001011110000010100101000000.
  
  Example 2:
  Input: 11111111111111111111111111111101
  Output: 10111111111111111111111111111111
  Explanation: The input binary string 11111111111111111111111111111101
  represents the unsigned integer 4294967293, so return 3221225471
  which its binary representation is 10101111110010110010011101101001.
  
  Note:
  - Note that in some languages such as Java, there is no unsigned integer type.
    In this case, both input and output will be given as signed integer type
    and should not affect your implementation, as the internal binary
    representation of the integer is the same whether it is signed or unsigned.
  - In Java, the compiler represents the signed integers using 2's complement
    notation. Therefore, in Example 2 above the input represents the
    signed integer -3 and the output represents the signed integer -1073741825.
  """
  
  class SolutionIter:
      # @param n, an integer
      # @return an integer
      def reverseBits(self, n):
          pass
  
  
  def main():
      pass
  
  
  if __name__ == '__main__':
      main()
  
subject: Add lc0190_reverse_bits.py