Class: Array

Inherits:
Object
  • Object
show all
Defined in:
lib/durga_zanec_math/array/foobar.rb,
lib/durga_zanec_math/array/arithmetic_progression.rb

Instance Method Summary collapse

Instance Method Details

#arithmetic_progression? ⇒ Boolean

Returns:

  • (Boolean) 


2
3
4
5
6
 
# File 'lib/durga_zanec_math/array/arithmetic_progression.rb', line 2

def arithmetic_progression?
  return true if size < 2

  self == (first..last).step((last-first)/(size-1)).to_a
end

#foobar ⇒ Object 



2
3
4
5
6
7
8
9
10
11
12
13
14
 
# File 'lib/durga_zanec_math/array/foobar.rb', line 2

def foobar
  self.inject([]) do |arr, num|
    if num % 3 == 0 && num % 5 == 0
      arr.push('foobar')
    elsif num % 5 == 0
      arr.push('bar')
    elsif num % 3 == 0 && num % 2 != 0
      arr.push('foo')
    else
      arr.push(nil)
    end
  end
end