Completed days 1 and 2

02/input

@@ -0,0 +1 @@
+1,0,0,3,1,1,2,3,1,3,4,3,1,5,0,3,2,1,10,19,1,19,5,23,1,6,23,27,1,27,5,31,2,31,10,35,2,35,6,39,1,39,5,43,2,43,9,47,1,47,6,51,1,13,51,55,2,9,55,59,1,59,13,63,1,6,63,67,2,67,10,71,1,9,71,75,2,75,6,79,1,79,5,83,1,83,5,87,2,9,87,91,2,9,91,95,1,95,10,99,1,9,99,103,2,103,6,107,2,9,107,111,1,111,5,115,2,6,115,119,1,5,119,123,1,123,2,127,1,127,9,0,99,2,0,14,0

02/solution1.rb

@@ -0,0 +1,35 @@
+#!/usr/bin/env ruby
+
+def process_opcodes(list)
+  index = 0
+
+  while index < (list.length - 1)
+    opcode = list[index]
+    case opcode
+    when 1
+      input1 = list[list[index+1]]
+      input2 = list[list[index+2]]
+      list[list[index+3]] = input1 + input2
+    when 2
+      input1 = list[list[index+1]]
+      input2 = list[list[index+2]]
+      list[list[index+3]] = input1 * input2
+    when 99
+      break
+    end
+    index += 4
+  end
+  return list
+end
+
+ARGF.each do |line|
+  # Eat the opcode list
+  list = line.split(",").map(&:to_i)
+
+  # Fix the program as per the exercise
+  list[1] = 12
+  list[2] = 2
+
+  # Print the post processed list for inspection to get the 0th element
+  puts process_opcodes(list).inspect
+end

02/solution2.rb

@@ -0,0 +1,51 @@
+#!/usr/bin/env ruby
+
+def process_opcodes(list)
+  index = 0
+
+  while index < (list.length - 1)
+    opcode = list[index]
+    case opcode
+    when 1
+      input1 = list[list[index+1]]
+      input2 = list[list[index+2]]
+      list[list[index+3]] = input1 + input2
+    when 2
+      input1 = list[list[index+1]]
+      input2 = list[list[index+2]]
+      list[list[index+3]] = input1 * input2
+    when 99
+      break
+    end
+    index += 4
+  end
+  return list
+end
+
+ARGF.each do |line|
+  # Eat the opcode list
+  list = line.split(",").map(&:to_i)
+
+  noun = 0
+  verb = 0
+  target_number = 19690720
+  program_output = [0]
+
+  while program_output[0] != target_number
+    temp_list = list.dup
+    temp_list[1] = noun
+    temp_list[2] = verb
+
+    # Enumarate through all possible nouns and verbs O(n^2)
+    if noun < 99
+      noun += 1
+    else
+      noun = 0
+      verb += 1
+    end
+
+    program_output = process_opcodes(temp_list)
+  end
+  # Print the post processed list for inspection to get the 0th element
+  puts program_output.inspect
+end