finished solution 2

day05/input

@@ -0,0 +1,815 @@
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day05/input.sample

@@ -0,0 +1,3 @@
+BFFFBBFRRR
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day05/solution01.rb

@@ -0,0 +1,34 @@
+#!/bin/env ruby
+
+ids = []
+File.readlines('./input').each do |line|
+    line.strip!
+    row = [0, 127]
+    col = [0, 7]
+    step = 64
+    line[..6].each_char do |char|
+        row[0] += step if char == 'B'
+        row[1] -= step if char == 'F'
+        step /= 2
+    end
+    step = 4
+    line[-3..].each_char do |char|
+        col[0] += step if char == 'R'
+        col[1] -= step if char == 'L'
+        step /= 2
+    end
+    id = (row[0] * 8) + col[0]
+    ids.push(id)
+    puts "Seat #{line} is at row #{row} and column #{col}. Seat id: #{id}"
+end
+
+puts "The highest seat ID is #{ids.max}"
+ids.sort!
+ids.each_index do |i|
+    next if i == 0
+    if ids[i] != (ids[i-1] + 1)
+        puts "My seat is #{ids[i] - 1}"
+        break
+    end
+end
+    

day06/input.sample

@@ -0,0 +1,15 @@
+abc
+
+a
+b
+c
+
+ab
+ac
+
+a
+a
+a
+a
+
+b

day06/solution01.rb

@@ -0,0 +1,10 @@
+#!/bin/env ruby
+
+text =  File.read('./input').split("\n\n")
+
+text.map! do |t|
+    t.delete("\n").split('').uniq.reduce(:+)
+end
+size = text.map { |t| t.length }.reduce(:+)
+
+p size

day06/solution02.rb

@@ -0,0 +1,17 @@
+#!/bin/env ruby
+
+groups = Hash.new
+text =  File.read('./input').strip.split("\n\n")
+
+people = text.map { |t| t.count("\n") + 1 }
+
+text.map!.with_index do |t, i|
+    t.delete!("\n")
+    t.each_char { |c| t.delete!(c) if t.count(c) != people[i] }
+    t.split('').uniq.reduce(:+)
+end
+
+text.compact!
+size = text.map { |t| t.length }.reduce(:+)
+
+p size