AdventOfCode2023/01/main.rb

#!/bin/ruby

#stolen numeric check lol
class Object
  def is_number?
    to_f.to_s == to_s || to_i.to_s == to_s
  end
end


content = File.readlines 'input.txt'

sum = 0
firstnum = 0
lastnum = 0
numcnt = 0

content.each do |item|
    item.chars.each do |char|
        if char.is_number?
            if numcnt == 0
                firstnum = char
            end
            numcnt += 1
            lastnum = char
        end
    end
    numcnt = 0
    val = ""
    val += firstnum.to_s
    val += lastnum.to_s
    sum += val.to_i
end

puts sum