1. Add section links to the chapter page.

2. Add chapter icons to navigation panel.
3. Replace recently added text with icon.

docs/chapter_appendix/index.md

@@ -0,0 +1,2 @@
+# 附录
+

mkdocs.yml

@@ -73,6 +73,8 @@ extra:
     - icon: fontawesome/solid/code
       link: https://leetcode.cn/u/jyd/
   generator: false
+  status:
+    new: 最近添加
 
 # Plugins
 plugins:
@@ -124,48 +126,56 @@ extra_css:
 
 # Page tree
 nav:
-  - 0.     前言:
+  - 0.   前言:
+    # [icon: material/book-open-outline]
     - chapter_preface/index.md
     - 0.1.   关于本书: chapter_preface/about_the_book.md
     - 0.2.   如何使用本书: chapter_preface/suggestions.md
     - 0.3.   小结: chapter_preface/summary.md
-  - 1.     初识算法:
+  - 1.   初识算法:
+    # [icon: material/code-tags]
     - chapter_introduction/index.md
     - 1.1.   算法无处不在: chapter_introduction/algorithms_are_everywhere.md
     - 1.2.   算法是什么: chapter_introduction/what_is_dsa.md
     - 1.3.   小结: chapter_introduction/summary.md
-  - 2.     复杂度:
+  - 2.   复杂度:
+    # [icon: material/timer-sand]
     - chapter_computational_complexity/index.md
     - 2.1.   算法效率评估: chapter_computational_complexity/performance_evaluation.md
     - 2.2.   时间复杂度: chapter_computational_complexity/time_complexity.md
     - 2.3.   空间复杂度: chapter_computational_complexity/space_complexity.md
     - 2.4.   小结: chapter_computational_complexity/summary.md
-  - 3.     数据结构:
+  - 3.   数据结构:
+    # [icon: material/database-outline]
     - chapter_data_structure/index.md
     - 3.1.   数据结构分类: chapter_data_structure/classification_of_data_structure.md
     - 3.2.   基本数据类型: chapter_data_structure/basic_data_types.md
     - 3.3.   数字编码 *: chapter_data_structure/number_encoding.md
     - 3.4.   字符编码 *: chapter_data_structure/character_encoding.md
     - 3.5.   小结: chapter_data_structure/summary.md
-  - 4.     数组与链表:
+  - 4.   数组与链表:
+    # [icon: material/view-grid-outline]
     - chapter_array_and_linkedlist/index.md
     - 4.1.   数组: chapter_array_and_linkedlist/array.md
     - 4.2.   链表: chapter_array_and_linkedlist/linked_list.md
     - 4.3.   列表: chapter_array_and_linkedlist/list.md
     - 4.4.   小结: chapter_array_and_linkedlist/summary.md
-  - 5.     栈与队列:
+  - 5.   栈与队列:
+    # [icon: material/stack-overflow]
     - chapter_stack_and_queue/index.md
     - 5.1.   栈: chapter_stack_and_queue/stack.md
     - 5.2.   队列: chapter_stack_and_queue/queue.md
     - 5.3.   双向队列: chapter_stack_and_queue/deque.md
     - 5.4.   小结: chapter_stack_and_queue/summary.md
-  - 6.     散列表:
+  - 6.   散列表:
+    # [icon: material/table-search]
     - chapter_hashing/index.md
-    - 6.1.   哈希表（New）: chapter_hashing/hash_map.md
+    - 6.1.   哈希表: chapter_hashing/hash_map.md
-    - 6.2.   哈希冲突（New）: chapter_hashing/hash_collision.md
+    - 6.2.   哈希冲突: chapter_hashing/hash_collision.md
-    - 6.3.   哈希算法（New）: chapter_hashing/hash_algorithm.md
+    - 6.3.   哈希算法: chapter_hashing/hash_algorithm.md
     - 6.4.   小结: chapter_hashing/summary.md
-  - 7.     树:
+  - 7.   树:
+    # [icon: material/graph-outline]
     - chapter_tree/index.md
     - 7.1.   二叉树: chapter_tree/binary_tree.md
     - 7.2.   二叉树遍历: chapter_tree/binary_tree_traversal.md
@@ -173,26 +183,30 @@ nav:
     - 7.4.   二叉搜索树: chapter_tree/binary_search_tree.md
     - 7.5.   AVL 树 *: chapter_tree/avl_tree.md
     - 7.6.   小结: chapter_tree/summary.md
-  - 8.     堆:
+  - 8.   堆:
+    # [icon: material/family-tree]
     - chapter_heap/index.md
     - 8.1.   堆: chapter_heap/heap.md
     - 8.2.   建堆操作: chapter_heap/build_heap.md
-    - 8.3.   Top-K 问题（New）: chapter_heap/top_k.md
+    - 8.3.   Top-K 问题: chapter_heap/top_k.md
     - 8.4.   小结: chapter_heap/summary.md
-  - 9.     图:
+  - 9.   图:
+    # [icon: material/graphql]
     - chapter_graph/index.md
     - 9.1.   图: chapter_graph/graph.md
     - 9.2.   图基础操作: chapter_graph/graph_operations.md
     - 9.3.   图的遍历: chapter_graph/graph_traversal.md
     - 9.4.   小结: chapter_graph/summary.md
-  - 10.     搜索:
+  - 10.   搜索:
+    # [icon: material/text-search]
     - chapter_searching/index.md
     - 10.1.   二分查找: chapter_searching/binary_search.md
     - 10.2.   二分查找边界: chapter_searching/binary_search_edge.md 
     - 10.3.   哈希优化策略: chapter_searching/replace_linear_by_hashing.md
     - 10.4.   重识搜索算法: chapter_searching/searching_algorithm_revisited.md
     - 10.5.   小结: chapter_searching/summary.md
-  - 11.     排序:
+  - 11.   排序:
+    # [icon: material/sort-ascending]
     - chapter_sorting/index.md
     - 11.1.   排序算法: chapter_sorting/sorting_algorithm.md
     - 11.2.   选择排序: chapter_sorting/selection_sort.md
@@ -205,29 +219,45 @@ nav:
     - 11.9.   计数排序: chapter_sorting/counting_sort.md
     - 11.10.   基数排序: chapter_sorting/radix_sort.md
     - 11.11.   小结: chapter_sorting/summary.md
-  - 12.     分治:
+  - 12.   分治:
+    # [icon: material/file-tree-outline]
     - chapter_divide_and_conquer/index.md
-    - 12.1.   分治算法（New）: chapter_divide_and_conquer/divide_and_conquer.md
+    # [status: new]
-    - 12.2.   分治搜索策略（New）: chapter_divide_and_conquer/binary_search_recur.md
+    - 12.1.   分治算法: chapter_divide_and_conquer/divide_and_conquer.md
-    - 12.3.   构建树问题（New）: chapter_divide_and_conquer/build_binary_tree_problem.md
+    # [status: new]
-    - 12.4.   汉诺塔问题（New）: chapter_divide_and_conquer/hanota_problem.md
+    - 12.2.   分治搜索策略: chapter_divide_and_conquer/binary_search_recur.md
-  - 13.     回溯:
+    # [status: new]
+    - 12.3.   构建树问题: chapter_divide_and_conquer/build_binary_tree_problem.md
+    # [status: new]
+    - 12.4.   汉诺塔问题: chapter_divide_and_conquer/hanota_problem.md
+  - 13.   回溯:
+    # [icon: material/map-marker-path]
     - chapter_backtracking/index.md
     - 13.1.   回溯算法: chapter_backtracking/backtracking_algorithm.md
     - 13.2.   全排列问题: chapter_backtracking/permutations_problem.md
     - 13.3.   子集和问题: chapter_backtracking/subset_sum_problem.md
     - 13.4.   N 皇后问题: chapter_backtracking/n_queens_problem.md
     - 13.5.   小结: chapter_backtracking/summary.md
-  - 14.     动态规划:
+  - 14.   动态规划:
+    # [icon: material/table-pivot]
     - chapter_dynamic_programming/index.md
-    - 14.1.   初探动态规划（New）: chapter_dynamic_programming/intro_to_dynamic_programming.md
+    # [status: new]
-    - 14.2.   DP 问题特性（New）: chapter_dynamic_programming/dp_problem_features.md
+    - 14.1.   初探动态规划: chapter_dynamic_programming/intro_to_dynamic_programming.md
-    - 14.3.   DP 解题思路（New）: chapter_dynamic_programming/dp_solution_pipeline.md
+    # [status: new]
-    - 14.4.   0-1 背包问题（New）: chapter_dynamic_programming/knapsack_problem.md
+    - 14.2.   DP 问题特性: chapter_dynamic_programming/dp_problem_features.md
-    - 14.5.   完全背包问题（New）: chapter_dynamic_programming/unbounded_knapsack_problem.md
+    # [status: new]
-    - 14.6.   编辑距离问题（New）: chapter_dynamic_programming/edit_distance_problem.md
+    - 14.3.   DP 解题思路: chapter_dynamic_programming/dp_solution_pipeline.md
-    - 14.7.   小结（New）: chapter_dynamic_programming/summary.md
+    # [status: new]
-  - 15.     附录:
+    - 14.4.   0-1 背包问题: chapter_dynamic_programming/knapsack_problem.md
+    # [status: new]
+    - 14.5.   完全背包问题: chapter_dynamic_programming/unbounded_knapsack_problem.md
+    # [status: new]
+    - 14.6.   编辑距离问题: chapter_dynamic_programming/edit_distance_problem.md
+    # [status: new]
+    - 14.7.   小结: chapter_dynamic_programming/summary.md
+  - 15.   附录:
+    # [icon: material/help-circle-outline]
+    - chapter_appendix/index.md
     - 15.1.   编程环境安装: chapter_appendix/installation.md
     - 15.2.   一起参与创作: chapter_appendix/contribution.md
   - 参考文献: