Task

Find the top   N   salaries in each department,   where   N   is provided as a parameter.

Use this data as a formatted internal data structure (adapt it to your language-native idioms, rather than parse at runtime), or identify your external data source:

Employee Name,Employee ID,Salary,Department
Tyler Bennett,E10297,32000,D101
John Rappl,E21437,47000,D050
George Woltman,E00127,53500,D101
Adam Smith,E63535,18000,D202
Claire Buckman,E39876,27800,D202
David McClellan,E04242,41500,D101
Rich Holcomb,E01234,49500,D202
Nathan Adams,E41298,21900,D050
Richard Potter,E43128,15900,D101
David Motsinger,E27002,19250,D202
Tim Sampair,E03033,27000,D101
Kim Arlich,E10001,57000,D190
Timothy Grove,E16398,29900,D190



      (Tyler Bennett,E10297,32000,D101)
      (John Rappl,E21437,47000,D050)
      (George Woltman,E00127,53500,D101)
      (Adam Smith,E63535,18000,D202)
      (Claire Buckman,E39876,27800,D202)
      (David McClellan,E04242,41500,D101)
      (Rich Holcomb,E01234,49500,D202)
      (Nathan Adams,E41298,21900,D050)
      (Richard Potter,E43128,15900,D101)
      (David Motsinger,E27002,19250,D202)
      (Tim Sampair,E03033,27000,D101)
      (Kim Arlich,E10001,57000,D190)
      (Timothy Grove,E16398,29900,D190)
  : ?employees
& ( toprank
  =   employees N n P "Employee Name" "Employee ID" SalaryDepartment
    .   !arg:(?employees.?N)
      & 1:?P
      &   whl
        ' (   !employees
            :   (?"Employee Name",?"Employee ID",?Salary,?Department)
                ?employees
          & !Department^(!Salary.!"Employee Name".!"Employee ID")*!P:?P
          )
      & out$(Top !N "salaries per department.")
      &   whl
        ' ( !P:%?Department^?employees*?P
          & out$(str$("Department " !Department ":"))
          & !N:?n
          &   whl
            ' ( !n+-1:~<0:?n
              &   !employees
                : ?employees+(?Salary.?"Employee Name".?"Employee ID")
              &   out
                $ (str$("  " !"Employee Name" " (" !"Employee ID" "):" !Salary))
              )
          )
  )
& toprank$(!employees.3)
& ;