Task 2 and Task 3

task2.rb

@@ -0,0 +1,14 @@
+def no_divide(num, den)
+  count = 0
+
+  while num - den >= 0
+  	num -= den
+
+  	count += 1
+  end
+
+  count 
+
+end
+
+puts no_divide(10,2) 

task3.rb

@@ -0,0 +1,30 @@
+good = "talking"
+bad = "programming"
+
+def test_for_uniqueness(str)
+
+  # get array of characters, sort them
+  arr = str.chars.to_a.sort
+
+  last_char = nil # previous value
+
+  # now go thru each element of the array, if one matches the next then you have a winner
+  arr.each_with_index do |item, index|
+
+  	 if (item == last_char)
+  	 	raise ArgumentError, "string is not unique, sorry"
+
+  	 else
+
+  	 	 last_char = item
+
+  	 end
+
+  end
+
+   puts "all shiny, nothing to fret."
+
+end
+
+test_for_uniqueness(good)
+test_for_uniqueness(bad)