#!/bin/env ruby input = Array.new File.readlines('./input').each.with_index do |line, i| line.strip! input[i] = line.split('') end input.each do |x| x.map! do |y| y == '#' ? true : false end end i = 0 trees = 0 len = input[0].length input.each do |row| trees += 1 if row[i] i +=3 i = i - len if i >= len end puts "We hit #{trees} trees"