Aizu:0009- Prime Number】的更多相关文章

http://acm.hust.edu.cn/vjudge/problem/viewProblem.action?id=34870 求n内的素数个数. /* *********************************************** Author : zch Created Time :2015/5/19 8:46:16 File Name :a.cpp ************************************************ */ #include…
题意:给出n,求不大于n的素数有多少个. 算法:先用线性时间复杂度的筛法打素数表,对于每个输入统计不超过的素数个数. #include <cstdio> int p[100010]; bool np[1000010]; int cntp; void SievePrime(int n) { for (int i = 0; i <= n; ++i) np[i] = true; np[0] = false, np[1] = false; for (int i = 2; i <= n; +…
题目链接:http://ac.jobdu.com/problem.php?pid=1040 详解链接:https://github.com/zpfbuaa/JobduInCPlusPlus 参考代码: // // 1040 Prime Number.cpp // Jobdu // // Created by PengFei_Zheng on 12/04/2017. // Copyright © 2017 PengFei_Zheng. All rights reserved. // #includ…
时间限制:1 秒 内存限制:32 兆 特殊判题:否 提交:6732 解决:2738 题目描述: Output the k-th prime number. 输入: k≤10000 输出: The k-th prime number. 样例输入: 3 7 样例输出: 5 17 虽然是英文题,但是题目意思很明确. 所以直接枚举出所有的素数,然后输入一个输出一个结果就可以了. 应该有更加简单高效的算法,欢迎指教! //Asimple #include <iostream> #include <…
Prime Number Time limit 1000 ms Memory limit 131072 kB Problem Description Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two dis…
时间限制:1 秒 内存限制:32 兆 特殊判题:否 提交:5278 解决:2180 题目描述: Output the k-th prime number. 输入: k≤10000 输出: The k-th prime number. 样例输入: 3 7 样例输出: 5 17 来源: 2008年上海交通大学计算机研究生机试真题 思路: 求质数要注意时间复杂度,只需要搜到sqrt(n)即可判断是否为质数. 另外如果多次求解,可以预先存数组,这样避免多次求解. 代码: #include <stdio.…
[九度OJ]题目1040:Prime Number 解题报告 标签(空格分隔): 九度OJ 原题地址:http://ac.jobdu.com/problem.php?pid=1040 题目描述: Output the k-th prime number. 输入: k≤10000 输出: The k-th prime number. 样例输入: 3 7 样例输出: 5 17 Ways 首先用C++做了一遍,刚开始没有AC的原因是判断素数的函数写的不对,没有处理2这个情况.后来发现每次停止循环的时候…
C - Prime number or not Time Limit:2000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice FZU 1649 Description Your task is simple.Give you a number N, you should judge whether N is a prime number or not. Input There…
Design an algorithm to find the kth number such that the only prime factors are 3, 5, and 7. The eligible numbers are like 3, 5, 7, 9, 15 ... Example If k=4, return 9. Challenge O(n log n) or O(n) time Analysis: This is the Humble number problem (丑数问…
Given two integers L and R, find the count of numbers in the range [L, R] (inclusive) having a prime number of set bits in their binary representation. (Recall that the number of set bits an integer has is the number of 1s present when written in bin…
Given two integers L and R, find the count of numbers in the range [L, R] (inclusive) having a prime number of set bits in their binary representation. (Recall that the number of set bits an integer has is the number of 1s present when written in bin…
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>Is Prime Number?</title> </head> <body> <script type="text/javascript"> var xNumber = +prompt("请输入一个大于1的数字:")…
[抄题]: Given two integers L and R, find the count of numbers in the range [L, R] (inclusive) having a prime number of set bits in their binary representation. (Recall that the number of set bits an integer has is the number of 1s present when written…
Ugly number is a number that only have factors 3, 5 and 7. Design an algorithm to find the kth number such that the only prime factors are 3, 5, and 7. The eligible numbers are like 3, 5, 7, 9, 15 ... Example If k=4, return 9. Challenge O(n log n) or…
Special Prime Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 738    Accepted Submission(s): 390 Problem Description Give you a prime number p, if you could find some natural number (0 is not in…
Description Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the f…
Prime Numbers  Descriptions: A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the first four prime numbers are: 2, 3, 5 and 7. Write a program which reads a list of N integers and p…
Prime Number CodeForces - 359C Simon has a prime number x and an array of non-negative integers a1, a2, ..., an. Simon loves fractions very much. Today he wrote out number on a piece of paper. After Simon led all fractions to a common denominator and…
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 遍历数字+质数判断 日期 题目地址:https://leetcode.com/problems/prime-number-of-set-bits-in-binary-representation/description/ 题目描述 Given two integers L and R, find the count of numbers in the…
这真是一个耗CPU的运算,怪不得现在因式分解和素数查找现在都用于加密运算. By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the 10 001st prime number? def isprime(n): boolisprime = True for i in xrange(2,n): if n % i == 0: bool…
前言  最近在用Polymer封装纯数字的输入框,开发过程中发现不少坑,也有很多值得研究的地方.本系列打算分4篇来叙述这段可歌可泣的踩坑经历: <动手写个数字输入框1:input[type=number]的遗憾> <动手写个数字输入框2:起手式--拦截非法字符> <动手写个数字输入框3:痛点--输入法是个魔鬼> <动手写个数字输入框4:魔鬼在细节--打磨光标位置> HTML5带来的福利-input[type=number] <input id=&quo…
xtrabackup备份MySQL报错:InnoDB: Error number 24 means 'Too many open files' 1.使用xtrabackup备份MySQL时出现如下报错: :: >> log scanned up to () xtrabackup: Generating a list of tablespaces InnoDB: Allocated tablespace ID InnoDB: Operating system error number in a…
题目要求 Given two integers L and R, find the count of numbers in the range [L, R] (inclusive) having a prime number of set bits in their binary representation. (Recall that the number of set bits an integer has is the number of 1s present when written i…
Given two integers L and R, find the count of numbers in the range [L, R] (inclusive) having a prime number of set bits in their binary representation. (Recall that the number of set bits an integer has is the number of 1s present when written in bin…
Given two integers L and R, find the count of numbers in the range [L, R](inclusive) having a prime number of set bits in their binary representation. (Recall that the number of set bits an integer has is the number of 1s present when written in bina…
一.Math 随机选取 //随机选取 function getRandom (begin,end){ return Math.floor(Math.random()*(end-begin))+begin; } 二.Error 1.try---catch function message() { adddlert('欢迎来到百度贴吧'); } function message() { try{ adddlert('欢迎来到百度贴吧'); }catch(e){ alert('代码出错,系统出错提示:…
Simon has a prime number x and an array of non-negative integers a1, a2, ..., an. Simon loves fractions very much. Today he wrote out number  on a piece of paper. After Simon led all fractions to a common denominator and summed them up, he got a frac…
题目描述 Output the k-th prime number. 输入 k≤10000 输出 The k-th prime number. 样例输入 10 50 样例输出 29 229 #include<bits/stdc++.h> using namespace std; ; int prime[N]; bool vis[N]; ; void isprime(int n) { fill(vis,vis+N,false); cnt=; ; i<n; i++) { if(!vis[i]…
使用POI导出xls文件,由于数据过多,导致导出xls报错如下: The maximum number of cell styles was exceeded. You can define up to 4000 styles in a .xls workbook 原因: 代码中创建 HSSFCellStyle cellStyle = hssfWorkbook.createCellStyle(); 次数过多,导致报错. 解决方法: 把创建HSSFCellStyle对象放在循环之外,或者放在全局,…
原脚本: begin  sys.dbms_job.submit(job => job,                      what => 'xxx;',                      next_date => to_date('10-12-2019', 'dd-mm-yyyy'),                      interval => 'TRUNC(SYSDATE + 1)');  commit;end; 报错: 修改后: declare  job…