图综合练习--拓扑排序

2023-07-30 13:30:47 浏览数 (1)

题目描述

已知有向图,顶点从0开始编号,求它的求拓扑有序序列。

拓扑排序算法:给出有向图邻接矩阵 1.逐列扫描矩阵,找出入度为0且编号最小的顶点v

2.输出v,并标识v已访问

3.把矩阵第v行全清0

重复上述步骤,直到所有顶点输出为止

--程序要求--

若使用C 只能include一个头文件iostream;若使用C语言只能include一个头文件stdio

程序中若include多过一个头文件,不看代码,作0分处理

不允许使用第三方对象或函数实现本题的要求

输入

第一行输入一个整数t,表示有t个有向图

第二行输入n,表示图有n个顶点

第三行起,输入n行整数,表示图对应的邻接矩阵

以此类推输入下一个图的顶点数和邻接矩阵

输出

每行输出一个图的拓扑有序序列

输入样例1 

2 5 0 1 0 1 1 0 0 1 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 7 0 0 0 0 0 0 0 1 0 1 1 0 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 1 0 1 0

输出样例1

0 1 3 2 4  4 6 5 1 3 2 0 

输入样例2 

11 22 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 0 0 0 0 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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

输出样例2

0 3 5 6 9 10 16 17 13 18 1 8 20 14 21 15 4 2 7 12 19 11  2 5 3 6 7 11 0 1 12 4 15 10 16 17 14 18 19 20 8 9 13 21  4 5 10 12 0 14 15 19 11 20 22 3 7 6 8 13 17 23 24 1 2 18 16 21 9  3 4 9 14 6 11 15 12 17 13 16 0 18 5 8 7 2 10 19 1 20 21  1 7 8 0 9 10 11 3 4 12 15 17 2 19 20 6 16 21 5 18 22 13 23 14  2 4 6 10 11 1 3 0 5 7 9 12 13 14 8 15 16 17 18 19  0 1 3 4 8 12 14 2 5 7 15 16 17 11 18 19 20 10 21 9 13 22 23 6  0 1 2 4 5 9 11 6 12 3 14 17 18 19 7 20 13 16 15 21 8 10 22 23 24  3 5 6 2 10 9 11 12 14 7 15 17 16 18 1 19 0 20 21 22 8 23 4 13  1 3 5 10 16 17 8 9 15 18 20 2 6 21 13 23 7 11 0 19 22 12 4 14 24  4 7 9 10 14 3 15 16 17 18 0 6 8 13 19 20 12 21 22 2 1 11 5 23 24 

AC代码

代码语言:javascript复制
#include <iostream>

using namespace std;
const int max_vertex_number = 100;

class Map {
    int matrix[max_vertex_number][max_vertex_number];
    int vertex_number;
    bool visitd[max_vertex_number] = {false};
public:
    Map() {
        cin >> vertex_number;
        for (int i = 0; i < vertex_number; i  )
            for (int j = 0; j < vertex_number; j  )
                cin >> matrix[i][j];
    }

    void Topology() {
        for (int time = 0; time < vertex_number; time  )
            for (int i = 0; i < vertex_number; i  ) {
                if(visitd[i])
                    continue;
                int indegree=0;
                for (int j = 0; j < vertex_number; j  )
                    if(matrix[j][i])
                        indegree  ;
                if(indegree==0){
                    cout<<i<<' ';
                    for(int j=0;j<vertex_number;j  )
                        matrix[i][j]=0;
                    visitd[i]=true;
                    break;
                }
            }
        cout<<endl;
    }
};

int main() {
    int t;
    cin >> t;
    while (t--) {
        Map test;
        test.Topology();
    }
}

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