Exercises: Arrays

Working with Arrays

Starting with an empty array called rainbowColors:

Add "orange" to the end of the array
Add "red" to the start of the array
Add "yellow" to the end
Add "green", "blue", "indigo", and "violet" to the end of the array
- Try and do this using one method
Print the length of the array
Print the second item
Print the last item (make this flexible/dynamic!)
Print the index of the string "blue"
Bonus: Find out the difference between .slice and .splice
- Create an array called twoColors using one method - don't change the rainbowColors array! Essentially pull two colors out of the array (say, between the index of 1 and 3)
- Starting with this array var nums = [0, 1, 2, 2, 2, 3, 3, 4, 5];, remove the duplicates destructively using slice or splice (whichever one is appropriate)
Bonus: Work with arrays of arrays
- Starting with this array var arrOfArrs = [["inner array first item", "inner array second item"], ["first", "second", "third"]];
- Access "inner array first item" and print it out"
- Print "third" by using a dynamic index

Create an array to hold your top five choices of something (music, books, movies, whatever).

For each choice, log to the screen a string like: "My #1 choice is blue."
Bonus: Change it to log "My 1st choice, "My 2nd choice", "My 3rd choice", picking the right suffix for the number based on what it is.