# Here we create an array `a` that will hold exactly 5 integers.
# In Ruby, arrays are dynamic and can hold any type of object.
a = Array.new(5, 0)
puts "emp: #{a}"

# We can set a value at an index using the array[index] = value syntax,
# and get a value with array[index].
a[4] = 100
puts "set: #{a}"
puts "get: #{a[4]}"

# The length method returns the length of an array.
puts "len: #{a.length}"

# Use this syntax to declare and initialize an array in one line.
b = [1, 2, 3, 4, 5]
puts "dcl: #{b}"

# Ruby doesn't have a direct equivalent to Go's ... syntax for array initialization.
# However, you can use the Array.new method with a block for similar functionality.
b = Array.new(5) { |i| i + 1 }
puts "dcl: #{b}"

# Ruby doesn't have a direct equivalent to Go's index-based initialization.
# However, you can achieve similar results using Array.new and fill.
b = Array.new(5, 0)
b[0] = 100
b[3] = 400
b[4] = 500
puts "idx: #{b}"

# Array types in Ruby are one-dimensional, but you can create multi-dimensional
# arrays by nesting arrays.
two_d = Array.new(2) { Array.new(3, 0) }
2.times do |i|
  3.times do |j|
    two_d[i][j] = i + j
  end
end
puts "2d: #{two_d}"

# You can create and initialize multi-dimensional arrays at once too.
two_d = [
  [1, 2, 3],
  [1, 2, 3]
]
puts "2d: #{two_d}"