邻接矩阵类写完基础功能，邻接表类修复已存在连接判断bug

homework5/CMakeLists.txt

@@ -4,3 +4,4 @@ project(homework5)
 set(CMAKE_CXX_STANDARD 20)
 
 add_executable(test2 test2.cpp)
+add_executable(test1 test1.cpp)

homework5/ListGraph.h

@@ -1,7 +1,4 @@
-//
-// Created by 31416 on 24-12-4.
-//
-
+// 邻接表类
 #ifndef LIST_GRAPH_H
 #define LIST_GRAPH_H
 
@@ -33,6 +30,7 @@ private:
         T weight;
         struct node *next;
     };
+
     vector<node *> nodes;
     bool flag; //定义是否有向
     bool isWeighted; //定义是否有权
@@ -45,6 +43,7 @@ public:
         this->flag = flag;
         this->isWeighted = isWeighted;
     }
+
     void insert(T data) {
         node *insert = new node();
         insert->data = nodes.size();
@@ -54,7 +53,9 @@ public:
         insert->next->next = NULL;
         nodes.push_back(insert);
     }
-    void connect(int id1,int id2,T weight=0) {   //flag区分是否为有向图
+
+    void connect(int id1, int id2, T weight = 0) {
+        //flag区分是否为有向图
         if ((id1 > nodes.size() - 1 || id2 > nodes.size() - 1) || (id1 < 0) || (id2 < 0)) {
             throw NodeIdOutOfRangeException("您提供的id超出范围", 0X002);
         }
@@ -72,6 +73,14 @@ public:
                     throw InsertExistedConnectException("禁止插入已存在的连接", 0x003);
                 }
                 current->next->weight = weight;
+                if (!flag) {
+                    node *current2 = nodes.at(id2);
+                    while (current2->next != NULL) {
+                        current2 = current2->next;
+                    }
+                    current2->next->weight = weight;
+                }
+                return;
             }
             current = current->next;
         }
@@ -91,6 +100,7 @@ public:
             current2->next->next = NULL;
         }
     }
+
     string to_string() {
         stringstream ss;
         for (int i = 0; i <= nodes.size() - 1; i++) {
@@ -99,15 +109,13 @@ public:
                 if (current->next == NULL) {
                     if (isWeighted) {
                         ss << current->data << "|" << current->weight;
-                    }
-                    else {
+                    } else {
                         ss << current->data;
                     }
                 } else {
                     if (isWeighted) {
                         ss << current->data << "|" << current->weight << " ";
-                    }
-                    else {
+                    } else {
                         ss << current->data << " ";
                     }
                 }
@@ -117,6 +125,7 @@ public:
         }
         return ss.str();
     }
+
     vector<T> BFS(int startId) {
         if (startId >= nodes.size() || startId < 0) {
             throw NodeIdOutOfRangeException("起始节点id超出范围", 0X004);

homework5/MatrixGraph.h

@@ -6,30 +6,65 @@
 #define MATRIXGRAPH_H
 
 #include<vector>
+
+#include "GraphExceptions/InsertExistedConnectException.h"
+#include "GraphExceptions/NodeIdOutOfRangeException.h"
+#include "GraphExceptions/SameNodeConnectException.h"
 using namespace std;
 
 template<typename T>
 class MatrixGraph {
 private:
-    vector<T> data;
-    vector<vector<bool> > matrix;
-    int nodeCount;
+    struct connection {
+        T weight; //权
+        bool connected; //是否连接
+    };
+
+    vector<T> data; //顶点值
+    vector<vector<connection> > matrix; //邻接矩阵
+    bool flag; //是否为有向图
+    bool isWeighted; //是否有权
 public:
-    MatrixGraph() {
-        matrix.clear();
+    MatrixGraph(bool flag = false, bool isWeighted = false) {
+        this->flag = flag;
+        this->isWeighted = isWeighted;
         data.clear();
-        nodeCount = 0;
+        matrix.clear();
     }
+
+    // 添加顶点
     void insert(T value) {
         data.push_back(value);
-        nodeCount++;
-        matrix.push_back(vector<bool>(nodeCount, false));
-        for(int i = 0; i < nodeCount-1; ++i) {
-            matrix[i].push_back(false);
+        matrix.push_back(vector<connection>(0, false)); //添加一行
+        for (auto &row: matrix) {
+            row.resize(data.size(), connection(0, false)); // 扩展列
+        }
+    }
+
+    // 连接顶点
+    void connect(int id1, int id2, T weight = 0) {
+        if (id1 > data.size() || id2 > data.size() || (id1 < 0 || id2 < 0)) {
+            throw NodeIdOutOfRangeException("您提供的id不合理", 0X001);
+        }
+        if (id1 == id2) {
+            throw SameNodeConnectException("禁止连接两个相同节点", 0x002);
+        }
+        if (matrix[id1][id2].connected) {
+            if (matrix[id1][id2].weight == weight) {
+                throw InsertExistedConnectException("禁止插入已存在的连接", 0x003);
+            }
+            matrix[id1][id2].weight = weight;
+            if (flag == false) {
+                matrix[id2][id1].weight = weight;
+            }
+            return;
+        }
+        matrix[id1][id2].connected = true;
+        matrix[id1][id2].weight = weight;
+        if (flag == false) {
+            matrix[id2][id1].connected = true;
+            matrix[id2][id1].weight = weight;
         }
     }
 };
-
-
-
 #endif //MATRIXGRAPH_H

homework5/test1.cpp

@@ -0,0 +1,29 @@
+// 利用邻接矩阵存储无向图，并从0号顶点开始进行深度优先遍历。
+// 输入：
+// 输入第一行是两个整数n e，其中n表示顶点数（则顶点编号为0至n-1），e表示图中的边数。之后有e行信息输入，每行输入表示一条边，格式是“顶点1 顶点2”，把边插入图中。如：
+// 4  4
+// 0  1
+// 1  3
+// 0  3
+// 0  2
+// 输出：
+// 先输出存储图的邻接矩阵，同一行元素之间空1格，最后一个元素之后不要有空格。
+// 之后空一行后输出从0号顶点开始的深度优先遍历序列，顶点编号之间空1格。
+// 例如，对于上面的示例输入，输出为：
+// 0 1 1 1
+// 1 0 0 1
+// 1 0 0 0
+// 1 1 0 0
+// 从顶点0开始的深度优先遍历序列：
+// 0 1 3 2
+// 说明
+// 输入第1个4表示有4个顶点，第2个4表示有4条边。之后的4行输入代表4条边的顶点。
+// 输出的前4行为邻接矩阵，之后空一行，然后输出的“0 1 3 2”是深度优先遍历序列。
+//
+
+#include <iostream>
+#include"MatrixGraph.h"
+using namespace std;
+int main() {
+    return 0;
+}