qq_43588832的博客

Andy the smart computer science student was attending an algorithms class when the professor asked the students a simple question, "Can you propose an efficient algorithm to find the length of the lar...

　　吉哥又想出了一个新的完美队形游戏！ 　　假设有n个人按顺序站在他的面前，他们的身高分别是h[1], h[2] ... h[n]，吉哥希望从中挑出一些人，让这些人形成一个新的队形，新的队形若满足以下三点要求，则就是新的完美队形： 　　1、挑出的人保持原队形的相对顺序不变，且必须都是在原队形中连续的； 　　2、左右对称，假设有m个人形成新的队形，则第1个人和第m个人身高相同，第2个人和第m-...

One day, sailormoon girls are so delighted that they intend to research about palindromic strings. Operation contains two steps: First step: girls will write a long string (only contains lower case) ...

A string is said to be a palindrome if it remains same when read backwards. So, 'abba', 'madam' both are palindromes, but 'adam' is not. Now you are given a non-empty stringS, containing only lowerc...