摘要： 一棵二叉搜索树可被递归地定义为具有下列性质的二叉树：对于任一结点， 其左子树中所有结点的键值小于该结点的键值； 其右子树中所有结点的键值大于等于该结点的键值； 其左右子树都是二叉搜索树。 所谓二叉搜索树的“镜像”，即将所有结点的左右子树对换位置后所得到的树。 给定一个整数键值序列，现请你编写程序，判 阅读全文

摘要： RPG girls今天和大家一起去游乐场玩，终于可以坐上梦寐以求的过山车了。可是，过山车的每一排只有两个座位，而且还有条不成文的规矩，就是每个女生必须找个个男生做partner和她同坐。但是，每个女孩都有各自的想法，举个例子把，Rabbit只愿意和XHD或PQK做partner，Grass只愿意和l 阅读全文

摘要： CC always becomes very depressed at the end of this month, he has checked his credit card yesterday, without any surprise, there are only 99.9 yuan le 阅读全文

摘要： Generally speaking, there are a lot of problems about strings processing. Now you encounter another such problem. If you get two strings, such as “asd 阅读全文

摘要： The French author Georges Perec (1936–1982) once wrote a book, La disparition, without the letter 'e'. He was a member of the Oulipo group. A quote fr 阅读全文

摘要： The stores manager has sorted all kinds of goods in an alphabetical order of their labels. All the kinds having labels starting with the same letter a 阅读全文

摘要： Corrupt governors always find ways to get dirty money. Paint something, then sell the worthless painting at a high price to someone who wants to bribe 阅读全文

摘要： In the game of DotA, Pudge’s meat hook is actually the most horrible thing for most of the heroes. The hook is made up of several consecutive metallic 阅读全文

摘要： FJ and his cows enjoy playing a mental game. They write down the numbers from 1 to N (1 <= N <= 10) in a certain order and then sum adjacent numbers t 阅读全文

摘要： You are given a string s consisting only of characters 0 and 1. A substring [l, r] of s is a string slsl + 1sl + 2... sr, and its length equals to r - 阅读全文