From 5ce088de52754c96769dc7b16cac45bad6a95067 Mon Sep 17 00:00:00 2001
From: khoaxuantu <68913255+khoaxuantu@users.noreply.github.com>
Date: Sun, 31 Mar 2024 14:58:35 +0700
Subject: [PATCH] Fix inconsistent comments Ruby - chapter array and linked
 list (#1202)

* fix: inconsistent comments Ruby - chapter array and linked list

* fix: better Ruby code & comments
---
 codes/ruby/utils/list_node.rb                    |  6 +++---
 docs/chapter_array_and_linkedlist/linked_list.md |  8 ++++----
 docs/chapter_array_and_linkedlist/list.md        | 16 ++++++++--------
 3 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/codes/ruby/utils/list_node.rb b/codes/ruby/utils/list_node.rb
index 12bf2676a..de46e67b5 100644
--- a/codes/ruby/utils/list_node.rb
+++ b/codes/ruby/utils/list_node.rb
@@ -9,8 +9,8 @@ class ListNode
   attr_accessor :val  # 节点值
   attr_accessor :next # 指向下一节点的引用
 
-  def initialize(val=nil, next_node=nil)
-    @val = val || 0
+  def initialize(val=0, next_node=nil)
+    @val = val
     @next = next_node
   end
 end
@@ -23,7 +23,7 @@ def arr_to_linked_list(arr)
     current.next = ListNode.new arr[i]
     current = current.next
   end
-  
+
   head
 end
 
diff --git a/docs/chapter_array_and_linkedlist/linked_list.md b/docs/chapter_array_and_linkedlist/linked_list.md
index 66e048b28..89e9aba48 100755
--- a/docs/chapter_array_and_linkedlist/linked_list.md
+++ b/docs/chapter_array_and_linkedlist/linked_list.md
@@ -178,8 +178,8 @@
       attr_accessor :val  # 节点值
       attr_accessor :next # 指向下一节点的引用
 
-      def initialize(val=nil, next_node=nil)
-        @val = val || 0
+      def initialize(val=0, next_node=nil)
+        @val = val
         @next = next_node
       end
     end
@@ -709,8 +709,8 @@
       attr_accessor :next   # 指向后继节点的引用
       attr_accessor :prev   # 指向前驱节点的引用
 
-      def initialize(val=nil, next_node=nil, prev_node=nil)
-        @val = val || 0
+      def initialize(val=0, next_node=nil, prev_node=nil)
+        @val = val
         @next = next_node
         @prev = prev_node
       end
diff --git a/docs/chapter_array_and_linkedlist/list.md b/docs/chapter_array_and_linkedlist/list.md
index bb1ce528b..cb4d6a8ce 100755
--- a/docs/chapter_array_and_linkedlist/list.md
+++ b/docs/chapter_array_and_linkedlist/list.md
@@ -282,9 +282,9 @@
 
     ```ruby title="list.rb"
     # 访问元素
-    num = nums[1]
+    num = nums[1] # 访问索引 1 处的元素
     # 更新元素
-    nums[1] = 0
+    nums[1] = 0 # 将索引 1 处的元素更新为 0
     ```
 
 === "Zig"
@@ -294,7 +294,7 @@
     var num = nums.items[1]; // 访问索引 1 处的元素
 
     // 更新元素
-    nums.items[1] = 0; // 将索引 1 处的元素更新为 0  
+    nums.items[1] = 0; // 将索引 1 处的元素更新为 0
     ```
 
 ??? pythontutor "可视化运行"
@@ -545,10 +545,10 @@
     nums << 4
 
     # 在中间插入元素
-    nums.insert 3, 6
+    nums.insert 3, 6 # 在索引 3 处插入数字 6
 
     # 删除元素
-    nums.delete_at 3
+    nums.delete_at 3 # 删除索引 3 处的元素
     ```
 
 === "Zig"
@@ -711,7 +711,7 @@
     for (var i = 0; i < nums.length; i++) {
         count += nums[i];
     }
-    
+
     /* 直接遍历列表元素 */
     count = 0;
     for (var num in nums) {
@@ -963,7 +963,7 @@
 === "JS"
 
     ```javascript title="list.js"
-    /* 排序列表 */  
+    /* 排序列表 */
     nums.sort((a, b) => a - b);  // 排序后，列表元素从小到大排列
     ```
 
@@ -1005,7 +1005,7 @@
 
     ```ruby title="list.rb"
     # 排序列表
-    nums = nums.sort { |a, b| a <=> b }
+    nums = nums.sort { |a, b| a <=> b } # 排序后，列表元素从小到大排列
     ```
 
 === "Zig"