# ARRAY

# A collection of INDEXED elements

# Initialize empty array
arr = []

# Append an element
arr.push("Paul")
arr << "Ringo"
arr << "George"
arr << "John"

# Address an element
array[0] # => "Paul"
array.first # => "Paul"

array[array.size - 1] # => return the last element
array.last # => same
array[-1] # => same
# [55] pry(main)> array[-3]

# Remove an element

# .pop — remove it from the end AND RETURS IT

# remove not from the end:
# .delete_at(index)
# .delete(value) # Note it will remove ALL OCCURENCES OF VALUE

# Change an element: 2-step operation: get element by index and assign new value
arrray[1] = "Andy"

# Iterate over an array with .each
array.each do |person|
  puts person
end