/term-1-competency

Primary LanguageJavaScript

Term 1 Competency

Steps To Get Started

  1. Install node and npm if they're not already present.
  2. cd into this directory in your terminal.
  3. Run npm install and npm test in a terminal you can devote to monitoring your progress in the assignment--preferably a terminal you can full-screen.
  4. Code the functions in main.js according to the specifications given below and outlined in detail in the tests. Check your terminal for feedback on which aspect of the problem you have yet to complete, and read main.test.js for the specifications' implementation; it makes explicit exactly what outputs are expected given the test inputs.

Exam Question Descriptions

Part 1

  1. fizzBuzzSingleNumber - For most numbers given, this function returns the number unchanged. For a number divisible by 3, it instead returns the string 'Fizz'. For a number divisible by 5, it returns the string 'Buzz'. For a number divisible by both 3 and 5, it returns the string 'FizzBuzz'. Hint: check your if/elses if things aren't quite coming out right.
  2. letterOffsetter - This function returns an encoded string from the string given to it, "moving" the letters along the alphabet according to the given offset. So with an offset of 1 and a string of 'adam', we get the string 'bebn' back, because 'b' is the next letter after 'a', 'e' is one letter after 'd', and so on. With a higher offset, you move the letter further to the right. If an offset brings the letter past 'z' it wraps back around; 'z' offset by 2 becomes 'b', and 'x' offset by 25 becomes 'w'. Hint: storing the alphabet in your code can allow you to easily calculate what letter comes next.
  3. uppercaseCount - Takes in an array of words and returns a number: the count of words in that array that are entirely uppercased. 'HELLO' would add to the count, while 'hello' would not. Nor would mixed-case words like 'heLLo'. Hint: You can check if a word is uppercased a few different ways. Checking every character works, and a helper function can make that easier, but a simpler way is to simply check the original against an uppercased version.

Part 2

  1. addToMultiDigitNumbers - Takes in an array of numbers in string format and returns an array of numbers in string format, but with the given number added to each multi-digit one. So given a 3, a '50' would become '53' and a '19' would become '22', but a '5' would stay a '5', since it's a single digit number. Hint: the numbers in the array are in string format, and need to be outputted in string format as well, but you'll need them to be numbers in the middle for actual math.
  2. singlesOnly - Given an array of objects representing people, returns an array of those people whose status property is NOT 'married'. Hint: we'll need to build a new array with some people filtered out.
  3. getMeanAverageSalaryOfWomen - Given an array of objects representing people, returns the mean average (what lay people just call "average") of the values of their salary properties, but only counting those people whose gender property is set to 'female'. Check the main.test.js for examples! Hint: the calculation for the mean average of a set of numbers is simply the sum of the numbers divided by how many numbers there are. Hint 2: you can just skip right by anyone whose gender is not 'female'!