Initial data commit

Task/Array-length/Lua/array-length.lua

@@ -0,0 +1,18 @@
+-- For tables as simple arrays, use the # operator:
+fruits = {"apple", "orange"}
+print(#fruits)
+
+-- Note the # symbol does not work for non-integer-indexed tables:
+fruits = {fruit1 = "apple", fruit2 = "orange"}
+print(#fruits)
+
+-- For this you can use this short function:
+function size (tab)
+  local count = 0
+  for k, v in pairs(tab) do
+    count = count + 1
+  end
+  return count
+end
+
+print(size(fruits))