摘要：题目A Subsequence is a sequence obtained by deleting zero or more characters in a string. A Palindrome isa string which when read from left to right, re 阅读全文

摘要：题目We say a sequence of characters is a palindrome if it is the same written forwards and backwards. For example, ‘racecar’ is a palindrome, but ‘fastc 阅读全文

摘要：题目(If you smiled when you see the title, this problem is for you ^_^)For those who don’t know KTV, see: http://en.wikipedia.org/wiki/Karaoke_boxThere 阅读全文