Added

Signed-off-by: Marcin Woźniak <y0rune@aol.com>

4-lab/xclip

@@ -0,0 +1,12 @@
+def randomNumber(k)
+  randomNumberArray=[]
+  randomNumberArray << 1
+  k= k - 1
+
+  while (k !=0 ) do
+    j = SecureRandom.random_number(2)
+    randomNumberArray << j
+    k = k - 1
+  end
+  return randomNumberArray.join
+end