3 ms·

It's not obvious for me (maybe you are joking and I didn't get it)

• kiliankoe 8y ago
  Try substituting other symbols, which makes it easier to see. 1 for ( and 0 for ) for example. Then we have 1010 and 1001
  • luizfzs 8y ago
    mindblow
• abababba 8y ago
  Try replacing ( with a and ) with b : abab -> not palindrome abba -> palindrome
  • kiliankoe 8y ago
    For a second I thought you have the most fitting username ever for this discussion, but then I saw that your account has just been created :D
• sombremesa 8y ago
  It depends on your definition of palindrome. Is it 'reads the same forwards or backwards' or is it 'had the same characters in the second half as in the first, but in reverse order'? You'll find that according to most dictionaries, ()() is the palindrome here. Unless you're a robot.