added word choosing method

hangman.rb

@@ -4,8 +4,22 @@
 #load in dictionary file
 #select random word between 5 and 12 letters long
 a = Array.new
-dictionary = File.open('5desk.txt')
-dictionary.each do |row|
-  a.push(row)
-  puts row
+
+def pick_word(a)
+  rand_int = rand(0..a.size)
+  return a[rand_int].chop!
 end
+
+#loading file into an array
+dict = File.open('5desk.txt')
+dict.each do |row|
+  a.push(row)
+end
+
+#picking a word between 5 and 12 characters long
+word = pick_word(a)
+until word.length.between?(5, 12)
+  word = pick_word(a)
+end
+
+puts "Your word is #{word}"