PCS Typing Questions

You are given a function which contains a non-working while loop. The function

also accepts a positive integer (x). The while loop is in an infinite loop state, which

would be unwise to run. The while loop continually decreases the value variable

by 1. Your task is to fix the code so that the loop exits and returns the value

variable when it is equal to x.

Answer explanation

Explanation: You need to check to see if value is equal to x. If it is, then you will return the value variable.

Code (the code you write is italicized and bold, the underscores are where indentations should be):

def while_loop_finisher(x: int):

__value = -1

__while value:

____value -= 1

____if value == x:

______return value

Write a function that iterates over a tuple(tup) and returns the position of the first odd number.

Answer explanation

Explanation: We need to go through every number in the tuple and check to see if it is an odd number. You can check to see if it is an odd number by dividing the number by two and seeing if there is a remainder of 1.

Code (the code you write is italicized and bold, underscores are where indentations should be):

def return_position_of_odd(tup: tuple):

__for x in tup:

____if x % 2 == 1:

______return tup.index(x)

Write a function that accepts two integers(a and b, where a < b) and returns the sum of all numbers between a and b (inclusive of a and b).

Answer explanation

Explanation: We need to create a variable to store the total in. We then need to cycle through the range of numbers and add each number together inside of the variable. Then we return the total.

Code (the code you write is italicized and bold, underscores are where indentations should be):

def looping_sum(a, b):

__total = 0

__for x in range(a, b + 1):

____total += x

__return total

Write a function that accepts two integers(a, b), it should sum up all the numbers from a to b (inclusive of a and b) and then return the sum divided by 2 as float.

Answer explanation

Explanation: We need to create a variable to store the total in. We then need to cycle through the range of numbers and add each number together inside of the variable. Then we return the total.

Code (the code you write is italicized and bold, underscores are where indentations should be):

def looping_sum(a: int, b: int):

__total = 0

__for x in range(a, b + 1):

____total += x

__return total / 2

Add the line of code needed to accumulate the total of all values of a and then print the result.

Answer explanation

Explanation: We need to add the values of a into the total variable.

Code (the code you write is italicized and bold, underscores are where indentations should be):

total = 0

for a in range(6):

__total += a

Write a function that accepts an integer(i) which can only be 0 or 1 and returns the Boolean representation of that integer.

Answer explanation

Explanation: We need to check to see if i is 0 or 1. If it is 1 we need to return True, and 0 would return False.

Code (the code you write is italicized and bold, underscores are where indentations should be):

def return_bool_integer(i):

__if i == 0:

____return False

__elif i == 1:

____return True

Write a function that accepts an integer(i) which can only be 0 or 1. The function should return the inverse Boolean representation of that integer.

Answer explanation

Explanation: We need to check to see if i is 0 or 1. If it is 1 we need to return False, and 0 would return True.

Code (the code you write is italicized and bold, underscores are where indentations should be):

def return_bool_integer(i):

__if i == 0:

____return True

__elif i == 1:

____return False

Write a function that accepts a float(fl) with 2 decimal places. Convert this float to an integer, removing its decimal places, then the resulting integer as a string and then convert it to a list. The process should look like 65.66 -> 65 -> '65' -> ['6', '5'].

Answer explanation

Explanation: We need to take fl and change it to an integer, then to a string, and finally a float. You should create a variable for each conversion and then return the final variable which should hold a list.

Code (the code you write is italicized and bold, underscores are where indentations should be):

def convert_float_to_string_to_list(fl):

__integer = int(fl)

__string = str(integer)

__list1 = list(string)

__return list1

Print the maximum value from a list named mylist.

Answer explanation

Explanation: Use the max() function to pull the maximum value from the parameter lst (this is the lowercase letter L, followed by the letters s and t -- not the number 1)

Code (the code you write is italicized and bold, underscores are where indentations should be):

def MaxList(lst):

__return max(lst)

Write a function that accepts any arbitrary argument (value) and returns True if the argument is a tuple, otherwise it should return False.

Answer explanation

Explanation: We're looking to see if the type of value is a tuple. If it is, return True, else return False.

Code (the code you write is italicized and bold, underscores are where indentations should be):

def correct_type_passed(value):

__if type(value) == tuple:

____return True

__else:

____return False