import java.util.$*$;

public class CourseGradebook extends Gradebook $\{$

$//$ Implementing abstract methods

@Override

public void setScore$($String assignmentName, Integer studentID, Double score$)\{$

$//$ Your implementation

$\}$

@Override

public double getScore$($String assignmentName, Integer studentID$)\{$

$//$ Your implementation

return Double.NaN;

$\}$

@Override

public HashMap getAssignmentScores$($String assignmentName$)\{$

$//$ Your implementation

return new HashMap$()$;

$\}$

@Override

public ArrayList getSortedAssignmentNames$()\{$

$//$ Your implementation

return new ArrayList$()$;

$\}$

@Override

public ArrayList getSortedStudentIDs$()\{$

$//$ Your implementation

return new ArrayList$()$;

$\}$

@Override

public HashMap getStudentScores$($Integer studentID$)\{$

$//$ Your implementation

return new HashMap$()$;

$\}$

$\}$

The Results as follows: Please help fix: am suck with code to pass.

$---$ testGetScoreAndSetScore$()----$

FAIL: getScore$("$Midterm$",11111)$ returned NaN, but expected is $91\mathrm{.}0$

$----$ testGetAssignmentScores$()----$

Calling getAssignmentScores$("$Homework $2")$

FAIL: getAssignmentScores$("$Homework $2")$ returned a map with $0$ scores, but the expected map has $11$ scores

$----$ testGetSortedAssignmentNames$()----$

FAIL: getSortedAssignmentNames$()$

Expected: $[$Course project, Final exam, Homework $1,$ Homework $2,$ Homework $3,$ Homework $4,$ Midterm$]$

Actual: $[]$

$----$ testGetSortedStudentIDs$()----$

FAIL: getSortedStudentIDs$()$

Expected: $[10000,11111,22222,33333,44444,55555,66666,77777,88888,90000,99999]$

Actual: $[]$

$----$ testGetStudentScores$()----$

Calling getStudentScores$(22222)$

FAIL: getStudentScores$(22222)$ returned a map with $0$ scores, but the expected map has $6$ scores

Summary:

testGetScoreAndSetScore$()$: FAIL

testGetAssignmentScores$()$: FAIL

testGetSortedAssignmentNames$()$: FAIL

testGetSortedStudentIDs$()$: FAIL

testGetStudentScores$()$: FAIL