1124 Raffle for Weibo Followers(20 分) 题意:微博抽奖,有M个人,标号为1~M.从第S个人开始,每N个人可以获奖,但是已获奖的人不能重复获奖,需要跳过该人把机会留给下一个人.如果没有得奖的输出“Keep going...”. 分析:按题意模拟即可.cnt表示当前的人距离上一个获奖的人间隔的人数.若cnt==N表示当前人可以获奖,若该人已获奖,可将cnt--,继续判断下一个人. #include<cstdio> #include<cstring>…

相对于102题,稍微改变下方法就行 迭代方法: 在102题的基础上,加上一个变量来判断是不是需要反转 反转的话,当前list在for循环结束后用collection的反转方法就可以实现反转 递归方法: 由于有层数,所以用层数%2判断是不是需要反转 反转的话就元素都添加到最前边,一层添加完后就是反的 下边是递归方法 List<List<Integer>> res = new ArrayList<>(); public List<List<Integer>…

Source: PAT (Advanced Level) Practice Reference: [1]胡凡,曾磊.算法笔记[M].机械工业出版社.2016.7 Outline: 基础数据结构: 线性表:栈,队列,链表,顺序表 树:二叉树的建立,二叉树的遍历,完全二叉树,二叉查找树,平衡二叉树,堆,哈夫曼树 图:图的存储和遍历 经典高级算法: 深度优先搜索,广度优点搜索,回溯剪枝 贪心,并查集,哈希映射 最短路径(只考察过单源),拓扑排序(18年9月第一次涉及相关概念,未正式考过),关键路径(未…

PAT (Advanced Level) Practice 1042 Shuffling Machine (20 分) 凌宸1642 题目描述: Shuffling is a procedure used to randomize a deck of playing cards. Because standard shuffling techniques are seen as weak, and in order to avoid "inside jobs" where employ…

PAT (Advanced Level) Practice 1001-1005 PAT 计算机程序设计能力考试 甲级 练习题 题库:PTA拼题A官网 背景 这是浙大背景的一个计算机考试 刷刷题练练手 在博客更新题解 每五题更新一次 共155题 题目目录 1001 A+B Format (20分) 1002 A+B for Polynomials (25分) 1003 Emergency (25分) 1004 Counting Leaves (30分) 1005 Spell It Right (2…

PAT (Advanced Level) Practice 1046 Shortest Distance (20 分) 凌宸1642 题目描述: The task is really simple: given N exits on a highway which forms a simple cycle, you are supposed to tell the shortest distance between any pair of exits. 译:你的任务很简单:给定 N 个出口,形成…

PAT (Advanced Level) Practice 1041 Be Unique (20 分) 凌宸1642 题目描述: Being unique is so important to people on Mars that even their lottery is designed in a unique way. The rule of winning is simple: one bets on a number chosen from [1,10 4 ]. The first…

PAT (Advanced Level) Practice 1035 Password (20 分) 凌宸1642 题目描述: To prepare for PAT, the judge sometimes has to generate random passwords for the users. The problem is that there are always some confusing passwords since it is hard to distinguish 1 (o…

PAT (Advanced Level) Practice 1031 Hello World for U (20 分) 凌宸1642 题目描述: Given any string of N (≥5) characters, you are asked to form the characters into the shape of U. For example, helloworld can be printed as: h d e l l r lowo That is, the charact…

PAT (Advanced Level) Practice 1027 Colors in Mars (20 分) 凌宸1642 题目描述: People in Mars represent the colors in their computers in a similar way as the Earth people. That is, a color is represented by a 6-digit number, where the first 2 digits are for R…