题意: 有一个排列,但少了两个数.给你少了这两个数的排列.找出是哪两个数. 思路: 看代码,,, 代码: int a[1005]; int main(){ int T; cin>>T; while(T--){ int n; cin>>n; mem(a,0); rep(i,1,n){ int x; scanf("%d",&x); a[x]=1; } int c[10]; int cn=0; rep(i,1,n+2) if(a[i]==0){ c[++cn]…

题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5166 Missing number Description There is a permutation without two numbers in it, and now you know what numbers the permutation has. Please find the two numbers it lose. Input There is a number T shows t…

Missing number Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) [Problem Description] There is a permutation without two numbers in it, and now you know what numbers the permutation has. Please find the two numbers…

题意:给你一串n个数,求出循环来看一阶差的最小字典序:数字串看成一个顺时针的环,从某一点开始顺时针循环整个环,保证字典序最小就是答案 例如给你 2 1 3 就会得到(1-2+8 注意题意负数需要加8) (3-1) (2-3+8)-> 7 2 7 答案就是2 7 7. 典型的最小表示法.线性时间内求出最小字典序. 首先复制一遍数字串在原串后面,这样从原串任意位置开始向再后n个位置就是答案.接着双指针维护,直接双指针暴力比较数字串,当出现不同数字时,就把字典序大的那个指针向后移动尽量多的位置这样可以…

[题目链接] http://acm.hdu.edu.cn/showproblem.php?pid=5972 [题目大意] 给出一个字符串,找出其中所有的符合特定模式的子串位置,符合特定模式是指,该子串的长度为n,并且第i个字符需要在给定的字符集合Si中 [题解] 利用ShiftAnd匹配算法. bt[i]表示字符i允许在哪些位置上出现,我们将匹配成功的位置保存在dp中,那么就可以用dp[i]=dp[i-1]<<1&bt[s[i]]来更新答案了 利用滚动数组和bitset可以来优化这样的…

Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example,Given nums = [0, 1, 3] return 2. Note:Your algorithm should run in linear runtime complexity. Could you implement it usi…

Problem Description As we know, Big Number is always troublesome. But it's really important in our ACM. And today, your task is to write a program to calculate A mod B. To make the problem easier, I promise that B will be smaller than 100000. Is it t…

1144 The Missing Number(20 分) Given N integers, you are supposed to find the smallest positive integer that is NOT in the given list. Input Specification: Each input file contains one test case. For each case, the first line gives a positive integer…

HDU 5723 Abandoned country(落后渣国) Time Limit: 8000/4000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Description 题目描述 An abandoned country has n(n≤100000) villages which are numbered from 1 to n. Since abandoned for a long time, the r…

HDU 3567 Eight II(八数码 II) /65536 K (Java/Others)   Problem Description - 题目描述 Eight-puzzle, which is also called "Nine grids", comes from an old game. In this game, you are given a 3 by 3 board and 8 tiles. The tiles are numbered from 1 to 8 and…