Instructions
This is practice for the coding exercise. It contains problems of similar difficulty to the actual coding exercise, but will not be graded. Feel free to take as much time as you want, but know that the actual coding exercise is timed; to be adequately prepared, you should be able to complete this within 45 minutes.
Use either your own Ruby setup, or repl.it.
The exercise is described with Ruby or Python in mind. However, you may answer it in any programming language you are most familiar with. However, please do not write pseudocode.
lucky_sevens?
Write a function lucky_sevens?(numbers), which takes in an array of
integers and returns true if any three consecutive elements sum to 7.
lucky_sevens?([2,1,5,1,0]) == true # => 1 + 5 + 1 == 7
lucky_sevens?([0,-2,1,8]) == true # => -2 + 1 + 8 == 7
lucky_sevens?([7,7,7,7]) == false
lucky_sevens?([3,4,3,4]) == false
Make sure your code correctly checks for edge cases (i.e. the first and last elements of the array).
oddball_sum
Write a function oddball_sum(numbers), which takes in an array of integers
and returns the sum of all the odd elements.
oddball_sum([1,2,3,4,5]) == 9 # => 1 + 3 + 5 == 9
oddball_sum([0,6,4,4]) == 0
oddball_sum([1,2,1]) == 2
disemvowel
Write a function disemvowel(string), which takes in a string, and returns that
string with all the vowels removed. Treat "y" as a consonant.
disemvowel("foobar") == "fbr"
disemvowel("ruby") == "rby"
disemvowel("aeiou") == ""