Update graph operations.

docs/chapter_graph/graph_operations.md

@@ -16,19 +16,19 @@ comments: true
 - **初始化**：传入 $n$ 个顶点，初始化长度为 $n$ 的顶点列表 `vertices` ，使用 $O(n)$ 时间；初始化 $n \times n$ 大小的邻接矩阵 `adjMat` ，使用 $O(n^2)$ 时间。
 
 === "初始化邻接矩阵"
-    ![adjacency_matrix_initialization](basic_operation_of_graph.assets/adjacency_matrix_initialization.png)
+    ![adjacency_matrix_initialization](graph_operations.assets/adjacency_matrix_initialization.png)
 
 === "添加边"
-    ![adjacency_matrix_add_edge](basic_operation_of_graph.assets/adjacency_matrix_add_edge.png)
+    ![adjacency_matrix_add_edge](graph_operations.assets/adjacency_matrix_add_edge.png)
 
 === "删除边"
-    ![adjacency_matrix_remove_edge](basic_operation_of_graph.assets/adjacency_matrix_remove_edge.png)
+    ![adjacency_matrix_remove_edge](graph_operations.assets/adjacency_matrix_remove_edge.png)
 
 === "添加顶点"
-    ![adjacency_matrix_add_vertex](basic_operation_of_graph.assets/adjacency_matrix_add_vertex.png)
+    ![adjacency_matrix_add_vertex](graph_operations.assets/adjacency_matrix_add_vertex.png)
 
 === "删除顶点"
-    ![adjacency_matrix_remove_vertex](basic_operation_of_graph.assets/adjacency_matrix_remove_vertex.png)
+    ![adjacency_matrix_remove_vertex](graph_operations.assets/adjacency_matrix_remove_vertex.png)
 
 以下是基于邻接矩阵表示图的实现代码。
 
@@ -179,19 +179,19 @@ comments: true
 - **初始化**：需要在邻接表中建立 $n$ 个结点和 $2m$ 条边，使用 $O(n + m)$ 时间。
 
 === "初始化邻接表"
-    ![adjacency_list_initialization](basic_operation_of_graph.assets/adjacency_list_initialization.png)
+    ![adjacency_list_initialization](graph_operations.assets/adjacency_list_initialization.png)
 
 === "添加边"
-    ![adjacency_list_add_edge](basic_operation_of_graph.assets/adjacency_list_add_edge.png)
+    ![adjacency_list_add_edge](graph_operations.assets/adjacency_list_add_edge.png)
 
 === "删除边"
-    ![adjacency_list_remove_edge](basic_operation_of_graph.assets/adjacency_list_remove_edge.png)
+    ![adjacency_list_remove_edge](graph_operations.assets/adjacency_list_remove_edge.png)
 
 === "添加顶点"
-    ![adjacency_list_add_vertex](basic_operation_of_graph.assets/adjacency_list_add_vertex.png)
+    ![adjacency_list_add_vertex](graph_operations.assets/adjacency_list_add_vertex.png)
 
 === "删除顶点"
-    ![adjacency_list_remove_vertex](basic_operation_of_graph.assets/adjacency_list_remove_vertex.png)
+    ![adjacency_list_remove_vertex](graph_operations.assets/adjacency_list_remove_vertex.png)
 
 基于邻接表实现图的代码如下所示。
 

docs/index.md

@@ -68,8 +68,10 @@ hide:
 
 感谢本开源书的每一位撰稿人，是他们的无私奉献让这本书变得更好，他们是：
 
-<a href="https://github.com/krahets/hello-algo/graphs/contributors">
-  <img src="https://contrib.rocks/image?repo=krahets/hello-algo" />
-</a>
+<p align="center">
+    <a href="https://github.com/krahets/hello-algo/graphs/contributors">
+        <img width="600" src="https://contrib.rocks/image?repo=krahets/hello-algo" />
+    </a>
+</p>
 
 ---

mkdocs.yml

@@ -165,7 +165,7 @@ nav:
     - 8.1. 堆（Heap）: chapter_heap/heap.md
   - 9. 图:
     - 9.1. 图（Graph）: chapter_graph/graph.md
-    - 9.2. 图基础操作: chapter_graph/basic_operation_of_graph.md 
+    - 9.2. 图基础操作: chapter_graph/graph_operations.md 
   - 10. 查找算法:
     - 10.1. 线性查找: chapter_searching/linear_search.md
     - 10.2. 二分查找: chapter_searching/binary_search.md