Distinct list of data from entitylist?

Hi,

I have a entity list with the name SWtudent.
StudentName and Mark are the two properties of that entity list Student.

There are 5 students

Sinu - 50
Sinu - 75
Jinu - 50
Jinu - 150
Manu - 45
Anu - 47
Sanu - 48


I want distinct list of student's depending on Mark(Highest mark of that student)..

I want following output

OUTPUT

Sinu - 75
Jinu - 150
Manu - 45
Anu - 47
Sanu - 48