Advent of Code 2022 with Ruby day 01

Problem

• We have text file which look like this

4514
8009

6703
1811
4881

3905

• Above number represents Calories of the food carried by 3 Elves. Blank line separate the food carried by each Elves

• We have to find total Calories of the food carried by Elf carrying the most Calories

Solution

First let's break down problem

• Reading text file
• Find out total calories carried by each Elves
• Find out maximum out of that calories

calories_carried_by_each_elves = 0
max_calories = 0

File.foreach('day_01.txt') do |calories|
  if calories.to_i.positive?
    calories_carried_by_each_elves += calories.to_i
  else
    max_calories = calories_carried_by_each_elves if calories_carried_by_each_elves > max_calories
    calories_carried_by_each_elves = 0
  end
end

puts max_calories