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Hibernate4中让SequenceGenerator支持字符类型的方法
在Hibernate4中,如果要用SequenceGenerator,其要求数据库中的对应字段为NUMBER等数值类型,但是在具体项目中,因为序列对应的字段往往是主键,虽然是数值但并不参与计算,还有一些其他的原因,...
分类:Web程序   时间:2015-03-13 14:43:32    阅读次数:144
zxing scan from large photo
在使用zxing开源库的时候,发现比较大的图片无法扫描成功,报如下异常: com.google.zxing.NotFoundException 通过scale down Bitmap可以解决上述问题,720是一个Magic number,可以根据自己的项目调整 // Scale...
分类:其他好文   时间:2015-03-13 14:42:53    阅读次数:155
hdu 2161 Primes 筛法求素数 大水题
Problem Description Write a program to read in a list of integers and determine whether or not each number is prime. A number, n, is prime if its only divisors are 1 and n. For this problem, the numbers 1 and 2 are not considered primes. Input Each inp...
分类:其他好文   时间:2015-03-13 14:24:56    阅读次数:130
Codeforces 514 D R2D2 and Droid Army(RMQ+二分)
An army of n droids is lined up in one row. Each droid is described by m integers a1,?a2,?...,?am, where ai is the number of details of thei-th type in this droid's mechanism. R2-D2 wants to destr...
分类:其他好文   时间:2015-03-13 14:24:35    阅读次数:152
hdu 1395 2^x mod n = 1 暴力过~~最好学下欧拉定理~~~
Problem Description Give a number n, find the minimum x(x>0) that satisfies 2^x mod n = 1. Input One positive integer on each line, the value of n. Output If the minimum x exists, print a line with 2^x mod n = 1. Print 2^? mod n = 1 otherwise. You ...
分类:其他好文   时间:2015-03-13 11:00:20    阅读次数:224
115. distinct subsequence leetcode python
Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be non...
分类:编程语言   时间:2015-03-13 10:57:15    阅读次数:188
javascript高级程序设计读书笔记
浮点数虽然精度很高,但在实际计算中的精度可能不如整数。比如0.1+0.2并不等于0.3,而是0.3000000000000004,所以把浮点数的计算结果当做判断条件会产生失误,这是基于IEEE754数据浮点计算的通病,js的数的表示范围也有限制,如果超过Number.MAX_VALUE或小于Numb...
分类:编程语言   时间:2015-03-13 10:50:11    阅读次数:189
C#基础知识汇总
过了一遍基础视频,发现有一些最基本的知识点还掌握的不够,汇总如下:1) 占位符1 string name = "张三";2 int age = 28;3 decimal salary = 7600.33M;4 int number = 1000;5 6 Console.Writeline("我叫{....
分类:Windows程序   时间:2015-03-13 07:05:33    阅读次数:185
Excel Sheet Column Number
Given a column title as appear in an Excel sheet, return its corresponding column number.本质上是一个进制转换问题。1 class Solution {2 public:3 int titleToNumb...
分类:其他好文   时间:2015-03-13 01:35:04    阅读次数:105
LeetCode Maximum Subarray
Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [?2,1,?3,4,?1,2,1,?5,4], the contiguous subarray [4,?1,2,1] ha...
分类:其他好文   时间:2015-03-13 00:28:08    阅读次数:187
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