Many bug fixes and improvements (#1270)

* Add Ruby and Kotlin icons
Add the avatar of @curtishd

* Update README

* Synchronize zh-hant and zh versions.

* Translate the pythontutor blocks to traditional Chinese

* Fix en/mkdocs.yml

* Update the landing page of the en version.

* Fix the Dockerfile

* Refine the en landingpage

* Fix en landing page

* Reset the README.md

zh-hant/codes/ruby/chapter_stack_and_queue/array_stack.rb

@@ -0,0 +1,78 @@
+=begin
+File: array_stack.rb
+Created Time: 2024-04-06
+Author: Xuan Khoa Tu Nguyen (ngxktuzkai2000@gmail.com)
+=end
+
+### 基於陣列實現的堆疊 ###
+class ArrayStack
+  ### 建構子 ###
+  def initialize
+    @stack = []
+  end
+
+  ### 獲取堆疊的長度 ###
+  def size
+    @stack.length
+  end
+
+  ### 判斷堆疊是否為空 ###
+  def is_empty?
+    @stack.empty?
+  end
+
+  ### 入堆疊 ###
+  def push(item)
+    @stack << item
+  end
+
+  ### 出堆疊 ###
+  def pop
+    raise IndexError, '堆疊為空' if is_empty?
+
+    @stack.pop
+  end
+
+  ### 訪問堆疊頂元素 ###
+  def peek
+    raise IndexError, '堆疊為空' if is_empty?
+
+    @stack.last
+  end
+
+  ### 返回串列用於列印 ###
+  def to_array
+    @stack
+  end
+end
+
+### Driver Code ###
+if __FILE__ == $0
+  # 初始化堆疊
+  stack = ArrayStack.new
+
+  # 元素入堆疊
+  stack.push(1)
+  stack.push(3)
+  stack.push(2)
+  stack.push(5)
+  stack.push(4)
+  puts "堆疊 stack = #{stack.to_array}"
+
+  # 訪問堆疊頂元素
+  peek = stack.peek
+  puts "堆疊頂元素 peek = #{peek}"
+
+  # 元素出堆疊
+  pop = stack.pop
+  puts "出堆疊元素 pop = #{pop}"
+  puts "出堆疊後 stack = #{stack.to_array}"
+
+  # 獲取堆疊的長度
+  size = stack.size
+  puts "堆疊的長度 size = #{size}"
+
+  # 判斷是否為空
+  is_empty = stack.is_empty?
+  puts "堆疊是否為空 = #{is_empty}"
+end