#!/usr/bin/env ruby
class PegCar
  PEG = 'Peg'
  CAR = 'Car'

  def initialize
    (1..100).map do |b|
      if b % 35 == 0
        puts "#{PEG}#{CAR}"
      elsif b % 5 == 0 && b % 7 != 0
        puts PEG
      elsif b % 7 == 0 && b % 5 != 0
        puts CAR
      else
        puts b
      end
    end
  end
end

PegCar.new

# output
1
2
3
4
Peg
6
Car
8
9
Peg
11
12
13
Car
Peg
16
17
18
19
Peg
Car
22
23
24
Peg
26
27
Car
29
Peg
31
32
33
34
PegCar
36
37
38
39
Peg
41
Car
43
44
Peg
46
47
48
Car
Peg
51
52
53
54
Peg
Car
57
58
59
Peg
61
62
Car
64
Peg
66
67
68
69
PegCar
71
72
73
74
Peg
76
Car
78
79
Peg
81
82
83
Car
Peg
86
87
88
89
Peg
Car
92
93
94
Peg
96
97
Car
99
Peg