ctrombley · June 20, 2016 18:16 · Jun 20, 2016 · Jun 20, 2016
diff --git a/gistfile1.txt → languages.rb b/gistfile1.txt → languages.rb
diff --git a/gistfile1.txt b/gistfile1.txt
@@ -0,0 +1,29 @@
+require 'minitest/autorun'
+
+describe "LanguageSolver" do
+  let (:solver) { LanguageSolver.new }
+  it "should generate pairs for comparison" do
+    solver.pairs(['ccda','ccbk', 'cd', 'a', 'ab', 'abd', 'aba'])
+      .must_equal([['d','b'],['c','d'],['c','a'],['d','a']])
+  end
+end
+
+class LanguageSolver
+  def pairs(ary)
+    pairs = []
+    ary[1..-1].each_with_index do |word, i|
+      puts
+      (0...word.size).each do |j|
+        puts "comparing #{ary[i-1][j]}, #{word[j]}"
+        if ary[i-1][j] == word[j] || ary.size <= j
+          next
+        end
+        puts "found difference"
+        pairs << [ary[i-1][j], word[j]]
+        break
+      end
+    end
+
+    pairs
+  end
+end