Answer
code
Work Step by Step
# 11.3 (Sort students by grades) Rewrite Listing 11.2, GradeExam.py, to display the students
# in increasing order of the number of correct answers.
def main():
# Students' answers to the questions
answers = [
['A', 'B', 'A', 'C', 'C', 'D', 'E', 'E', 'A', 'D'],
['D', 'B', 'A', 'B', 'C', 'A', 'E', 'E', 'A', 'D'],
['E', 'D', 'D', 'A', 'C', 'B', 'E', 'E', 'A', 'D'],
['C', 'B', 'A', 'E', 'D', 'C', 'E', 'E', 'A', 'D'],
['A', 'B', 'D', 'C', 'C', 'D', 'E', 'E', 'A', 'D'],
['B', 'B', 'E', 'C', 'C', 'D', 'E', 'E', 'A', 'D'],
['B', 'B', 'A', 'C', 'C', 'D', 'E', 'E', 'A', 'D'],
['E', 'B', 'E', 'C', 'C', 'D', 'E', 'E', 'A', 'D']]
# Key to the questions
keys = ['D', 'B', 'D', 'C', 'C', 'D', 'A', 'E', 'A', 'D']
results = []
# Grade all answers
for i in range(len(answers)):
# Grade one student
correctCount = 0
for j in range(len(answers[i])):
if answers[i][j] == keys[j]:
correctCount += 1
results.append([correctCount, "Student " + str(i)])
results.sort()
for row in results:
print(row[1], "correct count is", row[0])
main() # Call the main function
