এটি একটি C++ প্রোগ্রাম 2D অ্যারে ব্যবহার করে একটি গ্রাফ উপস্থাপন করে।
এই অ্যালগরিদমের সময় জটিলতা হল O(v*v).
অ্যালগরিদম
Begin Take the input of the number of vertex ‘v’ and edges ‘e’. Assign memory to the graph[][] matrix. Take the input of ‘e’ pairs of vertexes of the given graph in graph[][]. For each pair of connected vertex(v1, v2), store 1 in the graph[][] at the index (v1, v2) and (v2, v1). Print the matrix using PrintMatrix(). Endব্যবহার করে ম্যাট্রিক্স প্রিন্ট করুন
উদাহরণ কোড
#include<iostream> #include<iomanip> using namespace std; void PrintMatrix(int **matrix, int n) { int i, j; cout<<"\n\n"<<setw(4)<<""; for(i = 0; i < n; i++) cout<<setw(3)<<"("<<i+1<<")"; cout<<"\n\n"; for(i = 0; i < n; i++) { cout<<setw(3)<<"("<<i+1<<")"; for(j = 0; j < n; j++) { cout<<setw(4)<<matrix[i][j]; } cout<<"\n\n"; } } int main() { int i, v, e, j, v1, v2; cout<<"Enter the number of vertexes of the graph: "; cin>>v; int **graph; graph = new int*[v]; for(i = 0; i < v; i++) { graph[i] = new int[v]; for(j = 0; j < v; j++) graph[i][j] = 0; } cout<<"\nEnter the number of edges of the graph: "; cin>>e; for(i = 0; i < e; i++) { cout<<"\nEnter the vertex pair for edge "<<i+1; cout<<"\nV(1): "; cin>>v1; cout<<"V(2): "; cin>>v2; graph[v1-1][v2-1] = 1; graph[v2-1][v1-1] = 1; } PrintMatrix(graph, v); }
আউটপুট
Enter the number of vertexes of the graph: 5 Enter the number of edges of the graph: 4 Enter the vertex pair for edge 1 V(1): 2 V(2): 1 Enter the vertex pair for edge 2 V(1): 3 V(2): 2 Enter the vertex pair for edge 3 V(1): 1 V(2): 1 Enter the vertex pair for edge 4 V(1): 3 V(2): 1 (1) (2) (3) (4) (5) (1) 1 1 1 0 0 (2) 1 0 1 0 0 (3) 1 1 0 0 0 (4) 0 0 0 0 0 (5) 0 0 0 0 0