ACM(Array Complicated Manipulation) Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 513    Accepted Submission(s): 104 Problem Description Given an infinite array of integers 2,3,.... Now do som…

CSc 352 (Spring 2019): Assignment 11Due Date: 11:59PM Wed, May 1The purpose of this assignment is to work with linked lists, memory allocation, command linearguments, reading from a file, using free(), representing graphs, and doing more complicatedm…

Given an array of size n, find the majority element. The majority element is the element that appears more than  n/2  times. You may assume that the array is non-empty and the majority element always exist in the array. Hide Tags: Divide and Conquer…

Java Algorithm Problems 程序员的一天 从开始这个Github已经有将近两年时间, 很高兴这个repo可以帮到有需要的人. 我一直认为, 知识本身是无价的, 因此每逢闲暇, 我就会来维护这个repo, 给刷题的朋友们一些我的想法和见解. 下面来简单介绍一下这个repo: README.md: 所有所做过的题目 ReviewPage.md: 所有题目的总结和归纳(不断完善中) KnowledgeHash2.md: 对所做过的知识点的一些笔记 SystemDesign.md:…

题目描述 Given an array A with length n  a[1],a[2],...,a[n] where a[i] (1<=i<=n) is positive integer. Count the number of pair (l,r) such that a[l],a[l+1],...,a[r] can be rearranged to form a geometric sequence. Geometric sequence is an array where each…

2017-09-15 21:05:41 writer:pprp 给出一个序列问能否去掉k的数之后使得整个序列不是递增也不是递减的 先求出LIS,然后倒序求出最长递减子序列长度,然后判断去k的数后长度是否都大于所求长度 代码如下: #include <bits/stdc++.h> using namespace std; ],tmp1[],arr2[], tmp2[]; int len1,len2; int main() { int cas; // cin >> cas; scanf…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5587 题目大意就是初始有一个1,然后每次操作都是先在序列后面添加一个0,然后把原序列添加到0后面,然后从0到末尾,每一个都加上1. 例如:a0, a1, a2 => a0, a1, a2, 1, a0+1, a1+1, a2+1 题解中是这么说的:“ 其实Ai为i二进制中1的个数.每次变化A{k+2^i}=A{k}+1,(k<2^​i​​)不产生进位,二进制1的个数加1.然后数位dp统计前m个数二…

Description Edward has an array A with N integers. He defines the beauty of an array as the summation of all distinct integers in the array. Now Edward wants to know the summation of the beauty of all contiguous subarray of the array A. Input There a…

1. Reshape: The np.reshape() method will give a new shape to an array without changing its data. Note that the new shape should be compatible with the original shape. Here is how it works. np.reshape(a, newshape, order='C') Parameters ---------- a :…

http://www.ifrog.cc/acm/problem/1050?contest=1006&no=4 DP[val]表示以val这个值结尾的等差数列有多少个 DP[val] += DP[val / 2]; 数值很大,用map<int, int>DP即可. #include <cstdio> #include <cstdlib> #include <cstring> #include <cmath> #include <alg…

hdu 6197 题意:给定一个数组,问删掉k个字符后数组是否能不减或者不增,满足要求则是magic array,否则不是. 题解:队友想的思路,感觉非常棒!既然删掉k个后不增或者不减,那么就先求数组的最长不下降子序列的长度l1和最长不上升子序列的长度l2,若l1>=n-k||l2>=n-k,则满足要求. #include<iostream> #include<cstdio> #include<cstring> #include<algorithm&g…

[链接] 我是链接,点我呀:) [题意] 在这里输入题意 [题解] 如果我们对某一个位置i操作两次的话. 显然结果就和操作一次一样. 因为第一次操作过后1..i这些数字就变成是互质的了. gcd为1.那么除过之后没有影响的. 然后.就是要明白 那个f(x)函数的意义.其实就是问你x质因数分解之后,其中好的质数和坏的质数的差是多少. 也即有多少个好因数,多少个坏因数. (以下的gcd(i)都指的是a[1..i]这些数字的gcd 然后考虑我们在第i个位置进行了一次操作. 显然他会对后面的数字造成影响…

[链接] 我是链接,点我呀:) [题意] 在这里输入题意 [题解] 一开始所有的数字单独成一个集合. 然后用v[0]和v[1]记录集合的和为偶数和奇数的集合它们的根节点(并查集 然后先让v[0]的大小变成p //奇数+偶数是奇数 //奇数+奇数是偶数 //偶数+偶数是偶数 如果v[0].size < p 那么随便让两个和为奇数的集合,让他们合并在一起,加入到偶数集合中,那么v[0].size++,v[1].size-=2了 如果v[0].size > p 那么有两种方法  1.让两个偶数集合合…

Conferences ACM SEACM Southeast Regional Conference ACM Southeast Regional Conference the oldest, continuously running, annual conference of the ACM. ACMSE provides an excellent forum for both faculty and students to present their research in a frien…

Given a non-empty array of numbers, a0, a1, a2, … , an-1, where 0 ≤ ai < 231. Find the maximum result of ai XOR aj, where 0 ≤ i, j < n. Could you do this in O(n) runtime? Example: Input: [3, 10, 5, 25, 2, 8] Output: 28 Explanation: The maximum resul…

Memory Leak Time Limit: 2000MS Memory limit: 131072K 题目描述 Memory Leak is a well-known kind of bug in C/C++. When a string is longer than expected, it will visit the memory of next array which will cause the issue and leak some information. You can se…

认识了几个师弟,一直总想把自己的经验表达出来一些,让后面的人在更年轻的时候,认识到方向.努力. 昨天忽然想起自己在大学时候做了几天的acm,终于也没能坚持.然后就感觉带师弟们做下acm题目还是很不错. poj还是熟悉的界面,不过大学时候注册的账号也忘记了.想起来也没有几道题目被ack-于是重新注册了个账号. 当然一下就是1019题目,还以为这道题目挺水的,结果前前后后花了一上午的时间才被ack. -----------------关于1019题目的题意---------------------…

http://acm.hdu.edu.cn/contests/contest_showproblem.php?cid=646&pid=1006 #include<iostream> #include<algorithm> #include<stdio.h> #include<stdlib.h> #include<string.h> using namespace std; ; int ac[maxn],flag,n; int Increa…

田忌赛马 时间限制:3000 ms  |  内存限制:65535 KB 难度:3   描述 Here is a famous story in Chinese history. "That was about 2300 years ago. General Tian Ji was a high official in the country Qi. He likes to play horse racing with the king and others." "Both o…

Given a non-empty array of numbers, a0, a1, a2, - , an-1, where 0 ≤ ai < 231. Find the maximum result of ai XOR aj, where 0 ≤ i, j < n. Could you do this in O(n) runtime? Example: Input: [3, 10, 5, 25, 2, 8] Output: 28 Explanation: The maximum resul…

http://acm.zju.edu.cn/onlinejudge/showContestProblem.do?problemId=5496 The 12th Zhejiang Provincial Collegiate Programming Contest - D Beauty of Array Time Limit: 2 Seconds      Memory Limit: 65536 KB Edward has an array A with N integers. He defines…

关于“ACM” fender0107401 :面试了一个在ACM拿过奖的人 我问了他几个问题: 读取数组中的一个元素,计算复杂度是多少,回答不清楚. 往链表里面存一个数,不排序的情况下,计算复杂度是多少,回答不清楚. vector和array有什么区别,回答不清楚. hash table是什么,回答不清楚. 后来这货有点慌了,开始跟我扯ACM主要是搞什么动态规划,优化程序的复杂度的. 我心想,搞个毛啊,就这几个基础中的基础都不知道,还扯什么啊. 上次还面试过一个名校的软件工程专业的高材生.我问他…

Different GCD Subarray Query Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 681    Accepted Submission(s): 240 Problem Description This is a simple problem. The teacher gives Bob a list of prob…

HDOJ链接 http://acm.hdu.edu.cn/showproblem.php?pid=1003 不了解题目的朋友可以先看一下题目,在这里就不再详细介绍了.(文章内容和解题思路不完全相同,方法一.二.三.四没有对sequence 全为负数的情况进行考虑,就不再对代码进行更新了,如果需要可看1003解题代码,最下面.) Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a…

题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5280 Senior's Array Description One day, Xuejiejie gets an array $A$. Among all non-empty intervals of $A$, she wants to find the most beautiful one. She defines the beauty as the sum of the interval. Th…

Data manipulation primitives in R and Python Both R and Python are incredibly good tools to manipulate your data and their integration is becoming increasingly important1. The latest tool for data manipulation in R is Dplyr2 whilst Python relies onPa…

[题目链接]http://acm.hdu.edu.cn/showproblem.php?pid=1134 [解题背景]这题不会做,自己推公式推了一段时间,将n=3和n=4的情况列出来了,只发现第n项与第n-1项有关系,上网搜索的时候发现是组合数学中关于Catalan(卡特兰)数的运用. 以下资料来自网络,整理以备记录学习: [来源链接] http://baike.baidu.com/view/2499752.htm http://blog.163.com/lz_666888/blog/stati…

Array Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5587 Description Vicky is a magician who loves math. She has great power in copying and creating.One day she gets an array {1}. After that, every day she cop…

<algorithm>无疑是STL 中最大的一个头文件,它是由一大堆模板函数组成的.下面列举出<algorithm>中的模板函数: adjacent_find / binary_search / copy / copy_backward / count/ count_if / equal / equal_range / fill / fill_n / find /find_end / find_first_of / find_if / for_each / generate /ge…

Function Time Limit: 7000/3500 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 976    Accepted Submission(s): 375 Problem Description The shorter, the simpler. With this problem, you should be convinced of this tru…