If a machine can save only 3 significant digits, the float numbers 12300 and 12358.9 are considered equal since they are both saved as 0.123*105 with simple chopping. Now given the number of significant digits on a machine and two float numbers, you…

1060 Are They Equal (25 分)   If a machine can save only 3 significant digits, the float numbers 12300 and 12358.9 are considered equal since they are both saved as 0 with simple chopping. Now given the number of significant digits on a machine and tw…

If a machine can save only 3 significant digits, the float numbers 12300 and 12358.9 are considered equal since they are both saved as 0 with simple chopping. Now given the number of significant digits on a machine and two float numbers, you are supp…

一.技术总结 cnta.cntb用于记录小数点出现的位置下标,初始化为strlen(字符串)长度. q.p用于记录第一个非0(非小数点)出现的下标,可以用于计算次方和方便统计输出的字符串,考虑到前面可能出现0. 如果cnta > p ,说明小数点在第一个开始的非0数的下标的右边,那么科学计数法的指数为cnta – p ; 否则应该为cnta – p + 1; 字符串b同理 如果字符串p.q等于字符串长度,说明字符串为0,此时直接把 cnta(或者cntb)置为0,因为对于 0来说乘以几次方都是相…

Given a non-empty integer array, find the minimum number of moves required to make all array elements equal, where a move is incrementing a selected element by 1 or decrementing a selected element by 1. You may assume the array's length is at most 10…

Given a non-empty integer array of size n, find the minimum number of moves required to make all array elements equal, where a move is incrementing n - 1 elements by 1. Example: Input: [1,2,3] Output: 3 Explanation: Only three moves are needed (remem…

Given a non-empty array containing only positive integers, find if the array can be partitioned into two subsets such that the sum of elements in both subsets is equal. Note: Both the array size and each of the array element will not exceed 100. Exam…

参考:http://stackoverflow.com/questions/34584416/nested-loops-with-arrays You are going to be given an array of integers. Your job is to take that array and find an index N where the sum of the integers to the left of N is equal to the sum of the integ…

首先,==有很多限制,如Integer 类型的值在[-128,127] 期间,Integer 用 “==”是可以的(参考),超过范围则不行,那么使用equal则代替则完全ok public static void main(String[] args) { Long prop=4004L; Long prop1=4004l; Integer prop2=4004; Integer prop3=4004; if(prop2.equals(prop3)){ System.out.println("h…

无法解决 equal to 操作中 "SQL_Latin1_General_CP1_CI_AS" 和 "Chinese_PRC_CI_AS" 之间 2011-03-11 15:26:57 分类: 数据库开发技术 2011年03月10日 CCE3.03的服务器采用英文的2003R2 数据库排序规则为拉丁文忽略大小写. 我的存储过程中遇到了"无法解决 equal to 操作中 "SQL_Latin1_General_CP1_CI_AS" 和…

原题链接在这里:https://leetcode.com/problems/minimum-moves-to-equal-array-elements-ii/ 题目: Given a non-empty integer array, find the minimum number of moves required to make all array elements equal, where a move is incrementing a selected element by 1 or d…

原题链接在这里:https://leetcode.com/problems/minimum-moves-to-equal-array-elements/ 题目: Given a non-empty integer array of size n, find the minimum number of moves required to make all array elements equal, where a move is incrementing n - 1 elements by 1.…

在SQL SERVICE做关联查询的时候遇到了"conflict between "Chinese_PRC_CI_AI" and "Chinese_PRC_CI_AS" in the equal to operation"这个错误,如下图: 导致这个问题的原因是在表创建的时候,两个字段的排序规则不一样导致的.如图: Sales Table: Material Table: 解决方法,是在对比条件后面增加  collate Chinese_PRC_…

一.背景: 在一个项目中碰到大数据插入的问题,一次性插入20万条数据(SQL Server),并用200个线程去执行,计算需要花费多少时间,因此需要等200个线程处理完成后,记录花费的时间,需要考虑的一个问题是:如何判断判断多个线程是否全部执行完成.在执行数据库的插入过程中,当每个线程需要处理的数据量大时,是个耗时的过程,故对通过配置开启多个线程. 二.问题: 问题出来了,那么如何知道所有的线程操作都全部完成了,答案是利用C#中的的ManualResetEvent来处理:于是有下面的写法. //…

这篇博客很全面 http://www.cnblogs.com/cdeng/p/3471527.html ROC曲线 1.混淆矩阵(confusion matrix) 针对预测值和真实值之间的关系,我们可以将样本分为四个部分,分别是: 真正例(True Positive,TP):预测值和真实值都为1 假正例(False Positive,FP):预测值为1,真实值为0 真负例(True Negative,TN):预测值与真实值都为0 假负例(False Negative,FN):预测值为0,真实值…

更改存储过程的时候,在SQL中出现了 “无法解决 equal to 操作的排序规则冲突”错误,网上搜之,发现是表之间元素创建时排序规则不同(一个是collate Chinese_PRC_CI_AI_WS,一个为COLLATE SQL_Latin1_General_CP1_CI_AS) COLLATE 一个子句,可应用于数据库定义或列定义以定义排序规则,或应用于字符串表达式以应用排序规则投影. 一般解决办法: 直接在报错处的关联字段后加上collate Chinese_PRC_CI_AI_WS就可…

Scalaz是由一堆的typeclass组成.每一个typeclass具备自己特殊的功能.用户可以通过随意多态(ad-hoc polymorphism)把这些功能施用在自己定义的类型上.scala这个编程语言借鉴了纯函数编程语言Haskell的许多概念.typeclass这个名字就是从Haskell里引用过来的.只不过在Haskell里用的名称是type class两个分开的字.因为scala是个OOP和FP多范畴语言,为了避免与OOP里的type和class发生混扰,所以就用了typeclas…

Given a non-empty array containing only positive integers, find if the array can be partitioned into two subsets such that the sum of elements in both subsets is equal. Note: Each of the array element will not exceed 100. The array size will not exce…

Problem: Given a non-empty integer array of size n, find the minimum number of moves required to make all array elements equal, where a move is incrementing n - 1 elements by 1. Example: Input: [1,2,3] Output: 3 Explanation: Only three moves are need…

题目: Given a non-empty array containing only positive integers, find if the array can be partitioned into two subsets such that the sum of elements in both subsets is equal. Note: Both the array size and each of the array element will not exceed 100.…

http://www.cnblogs.com/shenliang123/archive/2012/04/16/2452156.html String str1 = new String("str"); String str2 = new String("str"); System.out.println("==比较 :"+ str1 == str2); System.out.println("equal比较:"+ str1.e…

E. Equal Digits time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output For the given integer N and digit D, find the minimal integer K ≥ 2 such that the representation of N in the positional nume…

http://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html#operator_equal-to ,=NULL,NULL=NULL; 1 NULL NULL NULL ,<=>NULL,NULL<=>NULL; 1 0 0 1   <=> NULL-safe equal. This operator performs an equality comparison like the = operator,…

Given a non-empty array containing only positive integers, find if the array can be partitioned into two subsets such that the sum of elements in both subsets is equal. Note: Each of the array element will not exceed 100. The array size will not exce…

CF 600B 题目大意:给定n,m,数组a(n个数),数组b(m个数),对每一个数组b中的元素,求数组a中小于等于数组该元素的个数. 解题思路:对数组a进行排序,然后对每一个元素b[i],在数组a中进行二分查找第一个大于b[i]的位置即为结果 /* CF 600B Queries about less or equal elements --- 二分查找 */ #include <cstdio> #include <algorithm> using namespace std;…

使用页面Tag判断某个值为空值时,不能使用logic:equal(无效),可以使用logic:notPresent…

#462.   Minimum Moves to Equal Array Elements II Given a non-empty integer array, find the minimum number of moves required to make all array elements equal, where a move is incrementing a selected element by 1 or decrementing a selected element by 1…

在java中如果我们要比较两个对象之间的关系的话有可能会用到下面的几种方法:==,equal,hasCode(),identifyHasCode(). ==用来比较对象本身是不是相同的. public class Test { public static void main(String[] args) { String s1="abc"; String s2="abc"; String s3=new String("abc"); String…

==比较的是对象的地址,也就是是否是同一个对象: equal比较的是对象的值. Integer r1 = new Integer(900);//定义r1整型对象Integer r2 = new Integer(900);//定义r2整型对象System.out.println(r1==r2);//返回falseSystem.out.println(r1.equal(r2));//返回true =============equal是用来判断一个字符串的,比如:String s = test;if…

今天又算是长见识了.了解了下平时不注意的equal和==的区别. 不管是==又或是equal都是用来比较相同与否.当问题就在这里了,比较什么相同呢? 我的在日常的比较无非也就是两种:1.基本数据类型之间的比较,2.引用类型数据之间的比较. 1.在基本数据类型之间的比较的时候.==与equal是一样的.都是比较两个值是否相同,相同为true不同为false. 2.在引用数据类型之间的比较的时候.==与equal也是一样的,都是比较栈内存中的地址是否相同,相同为true.不同为false. 一般情况…