Dictionary Sort

dictionary_sort.rb

def dictionary_sort(arr)
  # Your code here to sort the array
  arr.sort!
end

# Added a method HERE // for checking if it is a integer 

def isint(str)
    return !!(str =~ /^[-+]?[1-9]([0-9]*)?$/)
end

# ...your code here to initialize the program and take user input
arr=[]

while true 
  puts "Type a word:(or press enter to finish)"
  read=gets.chomp
  break if isint(read)  #if is a integer
  break if read.empty?  #if user enter
  arr<<read
end

puts dictionary_sort(arr)