Add lint

Author: bseverac

2023/day01/main.rb

@@ -1,21 +1,23 @@
 #!/usr/bin/env ruby
-arr_1 = File.readlines("data_1.txt")
-arr_2 = File.readlines("data_2.txt")
+# frozen_string_literal: true
 
-NUMBERS = %w[one two three four five six seven eight nine]
+arr1 = File.readlines('data_1.txt')
+arr2 = File.readlines('data_2.txt')
+
+NUMBERS = %w[one two three four five six seven eight nine].freeze
 
 def string_to_number(str)
-  index = NUMBERS.find_index(str)
-  index ? index + 1 : str.to_i
+ index = NUMBERS.find_index(str)
+ index ? index + 1 : str.to_i
 end
 
-def first_and_last arr, regexp = /\d/
-  arr.map do
-  first = _1[/#{regexp}/]
-  last = _1[/.*(#{regexp}).*/, 1]
-  string_to_number(first) * 10 + string_to_number(last)
-  end
+def first_and_last(arr, regexp = /\d/)
+ arr.map do
+ first = _1[/#{regexp}/]
+ last = _1[/.*(#{regexp}).*/, 1]
+ string_to_number(first) * 10 + string_to_number(last)
+ end
 end
 
-puts first_and_last(arr_1).sum
-puts first_and_last(arr_2, /\d|#{NUMBERS.join('|')}/).sum
+puts first_and_last(arr1).sum
+puts first_and_last(arr2, /\d|#{NUMBERS.join('|')}/).sum