我在头文件和源文件中有此代码。这是代码的小片段。这是来自.cpp文件。
int sample(Cdf* cdf)
{
//double RandomUniform();
double r = RandomUniform(); //code that is causing the error
for (int j = 0; j < cdf->n; j++)
if (r < cdf->vals[j])
return cdf->ids[j];
// return 0;
}
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这是从.c文件:
double RandomUniform(void)
{
double uni;
/* Make sure the initialisation routine has been called */
if (!test)
RandomInitialise(1802,9373);
uni = u[i97-1] - u[j97-1];
if (uni <= 0.0)
uni++;
u[i97-1] = uni;
i97--;
// ...
}
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这是从我的头文件
void RandomInitialise(int,int);
double …Run Code Online (Sandbox Code Playgroud) 我正在阅读包含多列数据集的文本文件.我正在使用Memreader,我已将每列分配为索引,以便将输出打印到目标文件.然而,对于我的生活,我无法弄清楚为什么我一直得到这个'数字格式例外'.我已经完成了通常的obj.nextLine()跳过标题,我已经为数据集中的所有值分配了'int'数据类型,并确保数据集只有int值,以便于测试,但仍然得到错误.这是我的代码:
public class MemReader implements Serializable{
private static final long serialVersionUID = 7526472295622776147L;
public OpenIntObjectHashMap movieToCust;
public OpenIntObjectHashMap custToMovie;
public OpenIntIntHashMap sumByCust;
public OpenIntIntHashMap sumByMovie;
/**
* Default constructor. Initializes hashtables.
*/
public MemReader() {
movieToCust = new OpenIntObjectHashMap();
custToMovie = new OpenIntObjectHashMap();
sumByCust = new OpenIntIntHashMap();
sumByMovie = new OpenIntIntHashMap();
}
/**
* Reads a text file in the form
*
* mid,uid,rating
*
* and stores this data in the custToMovie and
* movieToCust hashtables.
*
* @param …Run Code Online (Sandbox Code Playgroud)