Feature/try read pr for api

README.md

@@ -49,6 +49,21 @@ $ rand_chinese_name
 ```
 
 
+```
+require 'benchmark'
+
+Benchmark.measure { 100_000.times { ChineseName.generate } }
+
+ => #<Benchmark::Tms:0x007fa60b1bb238 @label="", @real=44.099358999868855, @cstime=0.0, @cutime=0.0, @stime=2.7199999999999998, @utime=36.43, @total=39.15>
+
+
+require 'ffaker'
+FFaker::NameCN
+
+
+```
+
+
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. You can also run `bin/console` for an interactive prompt that will allow you to experiment.

lib/chinese_name.rb

@@ -40,7 +40,7 @@ def generate_first_name
   end
 
   def generate_word
-    word = (19_968..20_901).to_a.sample
+    word = Random.rand(19_968..40_869)
     [word.to_s(16)].pack('H*').force_encoding('utf-16be').encode('utf-8')
   end
 
@@ -50,7 +50,7 @@ def generate_last_name
   end
 
   def all_last_name
-    IO.foreach(file_data).inject([]) { |arr, line| arr << line.strip }
+    @@all_last_name ||= IO.foreach(file_data).inject([]) { |arr, line| arr << line.strip }
   end
 
   def file_data