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Write a function that takes one number, and returns True if it ends with 4, or False otherwise. Example:
>>> ends_with(14)
True
>>> ends_with(13)
False

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Define a function max_of_two, that takes two numbers, a and b, and returns the larger of the two numbers.

Restriction: You cannot use max or min functions.

Define a function, max_of_four, that takes four numbers, w, x, y and z, and returns the largest of the four numbers.

Restriction: You cannot use max, min or any relational operator (<, >=, ...).

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Write a function is_low_battery, that takes an integer, level, and returns True if it is below 20, and False otherwise.

Write a function battery_status, that takes an integer, level and:
- It returns "critical" if level is below 5
- It returns "low" if level is between 5 and 19 (including both)
- It returns "normal" if level is 20 or above

Restriction: You CANNOT use any relational operator inside this function's body (<, >, !=, ...).

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Define a function, divisible, which takes two number, n and m, and returns True if n is divisible by m, False otherwise. Example:

>>> divisible(4, 2)
True
>>> divisible(5, 2)
False

Define a function, divisibles_prod, which takes one positive integer, x, and returns production of all odd numbers between 1 and x (not including x). Example:

>>> divisibles_prod(5)
3
>>> divisibles_prod(6)
15

Restrictions:
- You cannot use %

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Complete execution flow of the following program

Misses: 0

def is_vowel(char):
    for vowel in 'aeiou':
        if char == vowel:
            return 1
    return 0

def count_vowels(s):
    count = 0
    for char in s:
        count = count + is_vowel(char)
        if char == 'y':
            print('reset')
            count = 0

    return count

res = count_vowels('bye')

reset
>>>

$c = \sqrt{a^{2} + b^{2}}$

Write the above formula (pythagorean theorem) in python, representing it as a function.
Write a function pythagorean_theorem, which takes two numbers, a and b, and returns c.

Write a function, hypotenuse_times_3, that takes a and b as arguments, it finds c using pythagorean_theorem, and returns the result of c * 3

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def is_po(s):
    if s == 'po':
        return True
    return False

def is_zero(n):
    return n == 0

def aaa(a, b):
    if not is_po(a) and is_zero(b):
        return is_po(a)
    elif not is_zero(b):
        return 'pse'
    else:
        return is_po(a) and is_zero(b)

Given the above script, what are the results of the following calls:

aaa('po', 0):
aaa('jo', 0):
aaa('po', 2):

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def is_vowel(char):
    for vowel in 'aeiou':
        if char == vowel:
            return 1
    return 0

def count_vowels(s):
    count = 0
    for char in s:
        count = count + is_vowel(char)
        if char == 'y':
            print('reset')
            count = 0

    return count

res = count_vowels('traukni')
print(res)

Given the above script:

What is the value of res:
What is the printed value:

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Complete execution flow of the following program

Misses: 0

def divide(a, b):
    while a > b:
        a = a / 2
    return a

def sub(b):
    i = 0
    while i < 10:
        i = i + b
    return i

res = sub(10) + divide(6, 2)

Complete execution flow of the following program

Misses: 0

def double(a):
    return a + a

def sub(x, y):
    return x - y

def calculate(m, n):
    return double(sub(m, n) + sub(m, n))

print(calculate(2, 1))

4
>>>