added questions

solutions/le_rolen/exercise_1_questions.markdown

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+## Problem 1
+What do I want?
+How do I get there?
+Am I commanding or querying? Am I CRUDing or validating?
+What do I need to manipulate to get the answer i want?
+
+1. What is my desired data structure?
+
+1. What is my current data sturcture?
+3. Is the desired data structure a command or a queary?
+- Command
+  How do I change the data to what I want?
+- Query
+  How do I validate my query?
+## Problem 2
+
+## Problem 3
+What do I want?
+What is the simplest input/output to validate this?
+How do I break this down to simplest datum
+What tools do I have available
+Why is it breaking?
+(I should write tests)

solutions/le_rolen/exercise_1_solutions.rb

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+# Problem 1
+#
+class StringParser
+  attr_reader :word
+  def initialize(word)
+    @word = word
+  end
+
+  def unique?
+    !repeating_character?
+  end
+
+  def repeating_character?
+    word.chars.any? { |letter| word.scan(/#{letter}/).count > 1 }
+  end
+
+  def reverse
+    letters = word.chars
+    new_word = ""
+    new_word += letters.pop until letters.none?
+    new_word
+  end
+
+  def uniq
+    word.chars.each_with_object([]) do |letter, uniqs|
+      next if uniqs.include? letter
+      uniqs << letter
+    end.join
+  end
+end
+

solutions/le_rolen/exercise_1_test.rb

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+gem 'minitest'
+require 'minitest/autorun'
+require 'minitest/pride'
+require_relative 'exercise_1_solutions'
+
+class StringsTest < Minitest::Test
+  def test_determines_a_string_has_unique_characters
+    unique = "string"
+    assert_equal true, StringParser.new(unique).unique?
+    blah = "sstring"
+    refute_equal true, StringParser.new(blah).unique?
+  end
+
+  def test_reverse_a_string
+    reverse = "reverse"
+    assert_equal "esrever", StringParser.new(reverse).reverse
+  end
+
+  def test_can_find_uniques
+    a = "abcd"
+    aa = "aabcd"
+    aaa = "abbcda"
+    assert_equal a, StringParser.new(a).uniq
+    assert_equal a, StringParser.new(aa).uniq
+    assert_equal a, StringParser.new(aaa).uniq
+  end
+end