Data update

Task/Abbreviations-automatic/Crystal/abbreviations-automatic.cr

@@ -0,0 +1,12 @@
+def auto_abbreviate (string)
+  words = string.split
+  return nil unless words.present?
+  (1..words.max_of(&.size)).each do |n|
+    return n if words.map(&.[0, n]).to_set.size == words.size
+  end
+  "∞"
+end
+
+File.read_lines("weekdays.txt").each_with_index do |line, i|
+  puts "#{i+1}) #{auto_abbreviate(line)}  #{line}"
+end