如何在一組類平均值中顯示最大和最小平均值

Question

我正在用python編寫一個程序，允許用戶輸入班級中的學生人數，然後爲每個學生輸入3個測試成績。它還需要顯示學生的考試平均分，班級平均分，以及班級中的最高和最低平均分。現在，在每個學生的成績和平均成績打印後，我無法打印出平均成績。我也無法讓最高分和最高分都工作，因爲它隨着每個學生的變化而變化爲該學生的平均水平。

students=int(input('Please enter the number of students in the class: ')) 

for number in range(students): 

    class_average == 0 

    first_grade=int(input("Enter student's first grade: ")) 
    second_grade=int(input("Enter student's second grade: ")) 
    third_grade=int(input("Enter student's third grade: ")) 


    StudentAverage=(first_grade + second_grade + third_grade)/3 
    print("The student's average is", round(StudentAverage,2)) 



    class_average= class_average + StudentAverage 
    print("The class average is", round(class_average/students,2)) 



maximum_num = 0 

if StudentAverage > maximum_num: 
    maximum= StudentAverage 
    print("The maxiumum average is", round(maximum,2)) 


minimum_num = 100 

if StudentAverage < minimum_num: 
    minimum= StudentAverage 
    print("The minimum average is", round(minimum,2)) 

Answer 1

我感動外循環的初始化，因此值不會每次迭代期間復位。我將最大和最小比較移入循環，並替換了最大和最小變量。每個新值分別小於和大於這些值，因此需要使用maximum_num和minimum_num來代替。運行班級平均數過低，因爲它使用的是學生總數而不是當前計算的數字。我用數字+ 1取代了學生的使用。我認爲這是你想要的代碼。

students=int(input('Please enter the number of students in the class: ')) 
class_average = 0 
maximum_num = 0 
minimum_num = 100 
for number in range(students): 

    first_grade=int(input("Enter student's first grade: ")) 
    second_grade=int(input("Enter student's second grade: ")) 
    third_grade=int(input("Enter student's third grade: ")) 

    StudentAverage=(first_grade + second_grade + third_grade)/3 
    print("The student's average is", round(StudentAverage,2)) 

    class_average= class_average + StudentAverage 
    print("The class average is", round(class_average/(number+1),2)) 

    if StudentAverage > maximum_num: 
    maximum_num = StudentAverage 

    if StudentAverage < minimum_num: 
    minimum_num = StudentAverage 
print("The minimum average is", round(minimum_num,2)) 
print("The maxiumum average is", round(maximum_num,2))