This assessment consists of functions you need to write involving primarily numeric expressions. It is a closed book assessment. You should stay on this tab until you are done and there should be no talking. This assessment is about how much you understand. There are no automatic tests but you can use the REPL to test things yourself.
You can move through the questions with the arrows at the upper right next
to the 1 of indicator so if you’re not
sure how to write one function move on to another one and come back if you
have time at the end. I want to see how much you do know. Note: you
can also click on thingsLikeThis in these instructions and
the questions to copy them to the clipboard to avoid spelling mistakes.
(I.e. click to copy and then ⌘-v to paste wherever you want.)
Two useful functions you might want to use in some of these questions:
Math.floor() which takes a single argument and
returns the largest whole number less than the given value. For
instance, Math.floor(1.3) returns 1.Math.max() which takes any number of numbers as
arguments and return the largest of them. For
instance, Math.max(0, -3) returns 0 since it is
larger than -3
When you are done, please click on your Github username above and
submit a GitHub pull request of the branch
and request me as a reviewer. Doing this correctly is part of the
assessment. If you are unsure how to request a review, please ask for
help!
Write a function named totalEggs that takes two
arguments, a number of hard-boiled eggs and a number of soft-boiled
eggs you want to make and returns the total number of eggs you need.
Write a function named chocolatesPerPerson that takes
two arguments, a number of chocolates and a number of people. Return
the largest whole number of chocolates you can give to each person
if everyone gets the same amount. For
instance, chocolatesPerPerson(13, 5) should
return 2.
Write a function named extraChocolates that takes two
arguments, a number of chocolates and a number of people. Return the
number of chocolates that are left over after distributing the
chocolates evenly to all the people. For instance, For
instance, extraChocolates(13, 5) should
return 3.
Write a function named leftOut that takes two
arguments, a number of chocolates and a number of people. Return the
number of people who won’t get a chocolate if you try to distribute
them evenly and there are more people than chocolates. However, if
there are enough chocolates for everyone to get at least one the
function should return 0. For example, leftOut(10, 13)
should return 3 but leftOut(13, 10) should
return 0.
Write a function named probabilityAllHeads that takes a
single argument specifying the number of times a coin will be
flipped and returns the probability (a number between 0 and 1,
inclusive) of getting all heads. For
instance probabilityAllHeads(1) should
return 0.5 since the chance of getting heads on one
toss is 1/2. And probabilityAllHeads(2) should
return 0.25 since the chance of two independent
outcomes—such as getting a head on each of two flips of a coin—both
occuring is the product of their probabilities, in this case 0.5 ×
0.5 = 0.25. For reference probabilityAllHeads(10)
should return 0.0009765625.
Write a function named futureHour that takes two
arguments, the current hour on a 24-hour clock, i.e. a number from
0-23 inclusive, and a positive number of hours in the the future
that an event will occur. Return the hour it will be when the event
occurs. For example, futureHour(9, 4) should
return 13 since four hours after 9 it will be hour 13.
Note that the number of hours can be arbitrarily
large: futureHour(9, 28) would also
return 13 since the event would occur at hour 13 the
next day.
Write a function named presentsBudget that takes two
arguments, the number of friends you are buying presents for and the
average price of present you plan to buy, and returns the total
amount of money you expect to spend. For
instance presentsBudget(6, 15), i.e. six friends on
whom you want to spend an average of fifteen dollars, should
return 90.
Write a function named perPresent that takes two
arguments, the total amount of money you have budgeted for buying
presents and the number of presents you need to buy, and returns the
average amount you can spend per present. Thus perPresent(90,
6) should return 15 since with a budget of
ninety dollars and six presents to buy, you can spend an average of
fifteen dollars per present.
Write a function named wrapingCombos that takes three
arguments, the number of kinds of wrapping paper you have, the
number of kinds of ribbions you have, and the number of kinds of
decorative bows you have. Return the number of different
combinations of paper, ribbon, and bow you could produce, using one
kind of paper, one kind of ribbon, and one bow to wrap a present.
For example, with just two kinds of paper, three kinds of ribbon,
and five different bows there are thirty combinatons: for the two
kinds of paper you can choose any of the three ribbons, giving six
paper/ribbon combinations. And each of those combinations can be
topped with one of five different bows, giving thirty total
combinations. Thus wrappingCombos(2, 3, 5) should
return 30.
Write a function named biggestNumber that takes a
single argument representing a number of digits and returns the
largest number that can be written in our ordinary decimal (base-10)
number system using that many digits. For
instance:
biggestNumber(1) should return 9biggestNumber(2) should return 99biggestNumber(3) should return 999Hint: As a starting point, you might want to think about the numbers one bigger than these numbers and how you could express them in terms of the desired number of digits.