Aurora Anderson whiteboard 2

aurora-answers.rb

@@ -0,0 +1,58 @@
+# problem 1
+
+def mirror(list)
+
+  # returns a new array
+  # doubles size of orig array
+  # appends mirror image of original array on orig
+
+  result = []
+
+  list.length.times do |i|
+    result << list[i]
+  end
+
+  rev = -1
+  list.length.times do
+    result << list[rev]
+    rev -= 1
+  end
+
+  return result
+end
+
+# testing = [1,3,2,7]
+# puts mirror(testing)
+
+
+# problem 2
+
+
+def switchPairs(list)
+
+  result = []
+
+  i = 0
+  how_many_times = list.length/2
+  how_many_times.times do
+    first = list[i]
+    second = list[i+1]
+    result << second
+    result << first
+    i += 2
+  end
+
+  if list.length % 2 == 1
+    result << list[-1]
+  end
+
+  return result
+end
+
+# testing1 = ["four", "score", "and", "seven", "years", "ago"]
+# testing2 = ["to", "be", "or", "not", "to", "be", "hamlet"]
+
+# puts "first"
+# puts switchPairs(testing1)
+# puts "second"
+# puts switchPairs(testing2)