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A Tour of Go Function values
Functions are values too.在函数式语言中中函数都是变量,比如在javascript中package main import ( "fmt" "math")func main() { hypot := func(x,y float64) float64 { ...
分类:其他好文   时间:2014-10-28 00:39:13    阅读次数:130
HDU 1213How Many Tables
How Many Tables Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 14169    Accepted Submission(s): 6949 Problem Description Today is ...
分类:其他好文   时间:2014-10-27 21:22:04    阅读次数:236
android退出一个含有listview的activity时报java.lang.IllegalA
@Override public void unregisterDataSetObserver(DataSetObserver observer) { ? ?if (observer != null) { ? ? ? ?super.unregisterDataSetObserver(observer); ? ?} } 原因是: I too was having the...
分类:移动开发   时间:2014-10-27 17:53:46    阅读次数:255
Big Number
Problem DescriptionIn many applications very large integers numbers arerequired. Some of these applications are using keys for secure transmission ofd...
分类:其他好文   时间:2014-10-27 17:20:34    阅读次数:135
[Leetcode] Climbing Stairs
You are climbing a stair case. It takesnsteps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb...
分类:其他好文   时间:2014-10-27 00:08:57    阅读次数:277
A Tour of Go Numeric Constants
Numeric constants are high-precisionvalues.An untyped constant takes the type needed by its context.Try printingneedInt(Big)too.package main import "f...
分类:其他好文   时间:2014-10-26 21:08:04    阅读次数:192
sicily 1034. Forest
DescriptionIn the field of computer science, forest is important and deeply researched , it is a model for many data structures . Now it’s your job he...
分类:其他好文   时间:2014-10-26 15:35:34    阅读次数:169
highcharts 基本组成
最近一个项目,用到了图表,找了很多,发现Highcharts 这个纯js的图表插件非常好用,功能强大。做个笔记,备用。基本构成,见图:在上图中,显示了做图表时最常配置的几个项目:xAxisX坐标yAxisy坐标Credits版权信息legend图例exporting导出选项Title 标题too.....
分类:其他好文   时间:2014-10-26 11:28:33    阅读次数:210
HDU 1316 How Many Fibs? java大数(水
水一水。。import java.math.*; import java.util.*; import java.io.*; public class Main { BigInteger[] fib = new BigInteger[505]; public void work(){ fib[1] = BigInteger.ONE; fib[2] = BigIntege...
分类:编程语言   时间:2014-10-24 20:50:50    阅读次数:181
UVA - 10061 How many zero's and how many digits ?
n!=x*b^y, 当x为正整数时,最大的y就是n!末尾0的个数了, 把n,b分别拆成素因子相乘的形式: 例如, n=5,b=16 n=5,b=2^4, 很明显,末尾0的个数为0 10进制时,n!=a*10^x b进制时,n!=c*b^y 很明显,n!的位数就是最大的x+1 这里计算我用了log,精度设置为1e-9 #include...
分类:其他好文   时间:2014-10-24 20:47:09    阅读次数:320
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