NML Says

Library 6

All the solutions to the following exercises MUST

1. Be written in python, and, apart from doing what
2. Contain the following copyright notice:

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2
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5

'''
	Copyright © 2025 <author>
	Licenses under the BSD-3 License,
	please refer to the LICENSE document
'''

where each solver substitutes his own name for <author>.

You must each submit one code file, zipped to me at nmla@iba.dk, I will then make a repo with the results.

Exercise OSD.6.0

Write a function isEvenInt(a) that returns True if a is an even integer, otherwise ‘False’

Exercise OSD.6.1

Write a function f2c(f) where f is degrees Fahrenheit. The function must return a float with the temperature converted to Celsius.

Exercise OSD.6.2

Write a function tri_area(a, b, c) where a, b and c are lengths of a triangle’s sides. The function returns the area of the triangle. Hint: Use Heron’s formula.

Exercise OSD.6.3

Write a function avg_list(arr) where arr is a list of numbers. The function must return the average of the numbers in the list.

Exercise OSD.6.4

Write a function mul_list(arr) where arr is a list of numbers. The function must return the product of the numbers in the list.

Exercise OSD.6.5

Write a function circ_area(r) where r is the radius of a circle. The function must return the area of the circle with that radius.

Exercise OSD.6.6

Write a function fizz_buzz(n) where n is an integer. The function must return fizz if n is divisible by 3, buzz if n is divisible by 5, and fizzbuzz if n is divisible by both 3 and 5.

Exercise OSD.6.7

Write a function digit_sum(n) where n is an integer. The function must return the sum of ns digits.

Exercise OSD.6.8

Write a function largest_prime_under(n) where n is an integer. The function must return the largest prime < n.

Exercise OSD.6.9

Write a function largest_square_under(n) where n is an integer. The function must return largest square < n, such that for example largest_square_under(26) = 25

Exercise OSD.6.10

Write a function is_leap_year(yyyy) where yyyy is an integer interpreted as a calendar year. The function must return True is the year is a leap year, otherwise False.

Exercise OSD.6.11

Write a function factors(n) where n is an integer. The function must return a string with the factorization of n eg factors(60) = "2^2*3*5"

Exercise OSD.6.12

Write a function letter_freq(s, dic) where s is a string, and dic is a dictionary of frequencies. The function must create/update entries in the dictionary. The dictionary must have an entry for each found letter from s and the value of the entry must be the number of occurrences of that letter.

Exercise OSD.6.13

Write a function fibonacci(n) where n is an integer. The function must return the nth fibonacci number.

Exercise OSD.6.14

Write a function roll(n) where n is an integer. The function must return the outcome of rolling an n-sided die. The result must be between 1 and n.

Exercise OSD.6.15

Write a function validate_password(s) where s is a string. The function must return True if the password string is in accordance with the rules, otherwise ‘False’. A password must be at least 16 characters long, and consist of only alphanumeric characters including space. No sequences longer than two occurrences of the same character are allowed.

Exercise OSD.6.16

Write a function is_anagram(s1, s2) where s1ands2are strings. The function must returnTrueif the two string are anagrams of each other, otherwisefalse`.