如何只从列表中获取int部分并存储在数组中? [英] How to get only int part from the list and store in array?
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问题描述
在lst中我有studentId(int)和CosineSimilarity(double)我现在已经按降序对它们进行了排序,之后我只需要来自int数组中lst的整数值。
我尝试过:
public class 学生
{
public int Id { get ; set ; }
public double ?余弦{获取; set ; }
}
public 列表< Student> GetStuCosineSimilarity()
{
List< Student> lst = new 列表< Student>();
lst =(来自 s DB.Students
< span class =code-sdkkeyword>选择 new 学生()
{
Id = s.StudentId,
余弦= s.cosine相似度
})。ToList();
lst = lst.OrderBy(k = > k.Cosine)。ToList(); // 对浮点值进行排序
return lst;
}
解决方案
尝试:
int [] ids = lst.Select(l = > l.Id)。ToArray();
In lst i have studentId(int) and CosineSimilarity(double) i have sorted them in descending order now after that i want only integer values from lst in int array.
What I have tried:
public class Student
{
public int Id { get; set; }
public double? Cosine { get; set; }
}
public List<Student> GetStuCosineSimilarity()
{
List<Student> lst = new List<Student>();
lst = (from s in DB.Students
select new Student()
{
Id = s.StudentId,
Cosine = s.cosineSimilarity
}).ToList();
lst = lst.OrderBy(k => k.Cosine).ToList(); // Sorting the float value
return lst;
}
解决方案
Try:
int[] ids = lst.Select(l => l.Id).ToArray();
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