Day 5 and 6

Author: valeriecodes

2019/day_5.rb

@@ -0,0 +1,50 @@
+def intcode(input)
+  arr = input.dup
+  index = 0
+  loop do
+    opcode = arr[index]
+    case opcode
+    when 1
+      p1, p2, output_index = arr[index + 1..index + 3]
+      arr[output_index] = arr[p1] + arr[p2]
+      index += 4
+    when 2
+      p1, p2, output_index = arr[index + 1..index + 3]
+      arr[output_index] = arr[p1] * arr[p2]
+      index += 4
+    when 3
+
+    when 99
+      return arr[0]
+    end
+  end
+end
+
+def process_instruction(instruction, noun, verb)
+  if instruction == 1
+    noun + verb
+  elsif
+    noun * verb
+  end
+end
+
+def run(noun, verb, input)
+  input[1] = noun
+  input[2] = verb
+  intcode(input)
+end
+
+f = File.open('day_2_input.txt')
+input = f.read.split(",").map(&:to_i)
+puts "Part 1"
+puts run(12, 2, input)
+puts "Part 2"
+
+(0..99).each do |noun|
+  (0..99).each do |verb|
+    if run(noun, verb, input) == 19690720
+      puts 100 * noun + verb
+      break
+    end
+  end
+end

2019/day_6.rb

@@ -0,0 +1,29 @@
+def orbit_map(input)
+  orbits = {}
+  input.each do |line|
+    orbitee, orbiter = line.split(")")
+    orbits[orbiter] = orbitee
+  end
+  orbits
+end
+
+def count_orbits(obj, orbit_map, counter)
+  if orbit_map[obj]
+    count_orbits(orbit_map[obj], orbit_map, counter + 1)
+  else
+    return counter
+  end
+end
+
+f = File.open('day_6_input.txt')
+input = f.read.split("\n")
+all_objects = input.map{ |line| line.split(")")}.flatten.uniq
+puts "Part 1"
+running_counter = 0
+orbit_map = orbit_map(input)
+all_objects.each do |obj|
+  running_counter += count_orbits(obj, orbit_map, 0)
+end
+puts running_counter
+orbit_counts = Hash[ all_objects.map{ |obj| [obj, nil]} ]
+puts "Part 2"