Note: This can be a pair programming activity or done independently.
This lab provides an opportunity to pracitce implementing some real-world functions.
Please write code that implements various functions, following the requirements in the list below:
- Fork this repo
- Clone this repo into your ~/code/labs
- Define a function
maxOfTwoNumbers
that takes two numbers as arguments and returns the largest of them. Use the if-then-else construct available in Javascript. Do some googling to figure this out if you forget how conditionals work. - Define a function
maxOfThree
that takes three numbers as arguments and returns the largest of them. - Write a function
isCharacterAVowel
that takes a character (i.e. a string of length 1) and returns true if it is a vowel, false otherwise. - Define a function
sumArray
and a functionmultiplyArray
that sums and multiplies (respectively) all the numbers in an array of numbers. For example,sumArray([1,2,3,4])
should return 10, andmultiplyArray([1,2,3,4])
should return 24. - Write a function that return the number of arguments passed to the function when called.
- Define a function
reverseString
that computes the reversal of a string. For example, reverseString("jag testar") should return the string "ratset gaj". - Write a function
findLongestWord
that takes an array of words and returns the length of the longest one. - Write a function
filterLongWords
that takes an array of words and a numberi
and returns the array of words that are longer than i characters long.
Bonus
- Attach the function
reverseString
(from question 6) to the object String so that it is possible to call:"General Assembly".reverseString()
. - Write a function that takes a string as argument and returns an object where:
- the keys are the characters that occur in the string
- the values are the number of occurences for each letter, regardless of the case
For example, calling the function with the string "General Assembly" will return:
{
a: 2,
b: 1,
e: 3,
g: 1,
l: 2,
m: 1,
n: 1,
r: 1,
s: 2,
y: 1
}
- Upon completion, run the following commands
git add .
git commit -m "done"
git push origin master
- Navigate to your repo and create a Pull Request
- Put the link to Pull Request to the Student Excel File
Open the file functions.js
. All the function names are already inside the file, you just need to implement them by adding code inside each one.
Use the Chrome dev tools console to practice executing your code.
You'll review the answers with the instructor in class.