Practice interview questions

odd.rb

# 2) Write a function that takes a list of integers and returns the odd numbers.

class Odd
  def return_odd(int_array)
    odd_ints = int_array.select { |int| int % 2 == 1 }
   end 
end 

question_1.md

1. What's the difference between a list and a hash? When would you use one over the other?

A list is a type of data structure that

A hash is a data structure which implements an unordered associative array of key-value pairs. One advantage of a hash is that for large n, the average time-complexity of search, insert, and delete operations is in constant-time.