PR1

 Write a Python program to store marks scored in subject “Fundamental of Data Structure” by

N students in the class. Write functions to compute following: a)The average score of class

b)Highest score and lowest score of class c)Count of students who were absent for the test

d)Display mark with highest frequency



# Function to compute the average score of the class

def compute_average(marks):

    total_marks = sum(marks)

    num_students = len(marks)

    return total_marks / num_students if num_students > 0 else 0


# Function to find the highest and lowest score in the class

def find_highest_lowest(marks):

    return max(marks), min(marks)


# Function to count the number of students absent for the test

def count_absentees(marks):

    return marks.count(-1)


# Function to find the mark with the highest frequency

def mark_with_highest_frequency(marks):

    frequency = {}

    for mark in marks:

        if mark != -1:  # Exclude absentees

            frequency[mark] = frequency.get(mark, 0) + 1

    

    max_freq = max(frequency.values(), default=0)

    highest_freq_marks = [mark for mark, freq in frequency.items() if freq == max_freq]


    return highest_freq_marks, max_freq


# Input the number of students

n = int(input("Enter the number of students: "))


# Input marks for each student (-1 for absent)

marks = []

print("Enter the marks for each student (-1 for absent):")

for i in range(n):

    mark = int(input(f"Student {i + 1}: "))

    marks.append(mark)


# Exclude absentees for calculations

valid_marks = [mark for mark in marks if mark != -1]


# a) Compute the average score of the class

average_score = compute_average(valid_marks)

print(f"\nThe average score of the class is: {average_score:.2f}")


# b) Find the highest and lowest score of the class

if valid_marks:

    highest_score, lowest_score = find_highest_lowest(valid_marks)

    print(f"The highest score in the class is: {highest_score}")

    print(f"The lowest score in the class is: {lowest_score}")

else:

    print("No valid marks to determine highest and lowest scores.")


# c) Count the number of students absent for the test

absent_count = count_absentees(marks)

print(f"The number of students absent for the test is: {absent_count}")


# d) Display the mark with the highest frequency

if valid_marks:

    highest_freq_marks, max_freq = mark_with_highest_frequency(marks)

    print(f"The marks with the highest frequency ({max_freq} times): {highest_freq_marks}")

else:

    print("No valid marks to determine frequency.")


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