FDS (LV) Ass 2

n = int(input("Enter Number of Students: "))
marks = {}
for i in range(1, n+1):
    marks[i] = input("Enter the marks for Roll Number " + str(i) + ": ")


print("\nThe Marks are as Follows: ")
for roll, mark in marks.items():
    print("SB" + str(roll) + ": " + str(mark))

def getAverage():
    sum = 0
    for value in marks.values():
        if value == "AB":
            continue
        sum += int(value)
    average = sum/n
    print("\nThe Average Score is: " + str(average))


def getExtremes():
    maximum = 0
    minimum = 100
    for value in marks.values():
        if value == "AB":
            continue
        else:
            value = int(value)
            if value >= maximum:
                maximum = value
            if value <= minimum:
                minimum = value
    print("\nThe Maximum score is: " + str(maximum))
    print("\nThe Minumum score is: " + str(minimum))


def getAbsentCount():
    count = 0
    for value in marks.values():
        if value == "AB":
            count += 1
    print("\nNumber of students who were Absent is: " + str(count))


def getHighestFrequency():
    justMarks = []
    distinct = []
    frequencies = {}
    markCount = 0

    for value in marks.values():
        if value == "AB":
            continue
        else:
            value = int(value)
            justMarks.append(value)
            if value not in distinct:
                distinct.append(value)

    for element in distinct:
        markCount = 0
        for mark in justMarks:
            if mark == element:
                markCount += 1
        frequencies[element] = markCount

    maxFreq = 0
    freqMark = 0
    print()
    for mark, freq in frequencies.items():
        if freq >= maxFreq:
            maxFreq = freq
            freqMark = mark
    print("Mark of " + str(freqMark) + " has the highest frequency of: " + str(maxFreq))



print ("\n ---------- MENU ----------")
while True:
    print("\nChoose a Task Number from 1, 2, 3, 4, 5")
    print("1: Get Average Score of the class")
    print("2: Get the Maximum and Minumum Scores")
    print("3: Get count of Absent Students")
    print("4: Get the Mark with Highest Frequency")
    print("5: Exit")
    choice = (input("Enter the Task Number: "))

    if choice == '1':
        getAverage()

    elif choice == '2':
        getExtremes()

    elif choice == '3':
        getAbsentCount()

    elif choice == '4':
        getHighestFrequency()

    elif choice == '5':
        break

    else:
        print("\nERROR! Enter a valid choice")