Add all the A tasks

Task/Associative-array-Iteration/Ruby/associative-array-iteration.rb

@@ -0,0 +1,14 @@
+myDict = { "hello" => 13,
+	   "world" => 31,
+	   "!"     => 71 }
+
+# iterating over key-value pairs:
+myDict.each {|key, value| puts "key = #{key}, value = #{value}"}
+# or
+myDict.each_pair {|key, value| puts "key = #{key}, value = #{value}"}
+
+# iterating over keys:
+myDict.each_key {|key| puts "key = #{key}"}
+
+# iterating over values:
+myDict.each_value {|value| puts "value =#{value}"}