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數據結構—鄰接矩陣的DFS

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原理：參考趣學數據結構

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代碼：

#include<stdio.h> #include<stdlib.h> #define N 100 #define elemType int //const int MAX_INT = (1 << 31) - 1; //const int MAX_INT = 0X7fffffff; #define INF (((unsigned int)(-1)) >> 1) bool visited[N]; typedef struct GraphMatrix {elemType vNode[N][N];int vNum, eNum; }GraphMatrix; void initGMaxtix(GraphMatrix &G) {//初始化鄰接矩陣printf("輸入頂點數和邊數\n");scanf_s("%d%d", &G.vNum, &G.eNum);for (int i = 0; i < G.vNum; i++) {//初始化鄰接矩陣for (int j = 0; j < G.vNum; j++) {G.vNode[i][j] = INF;}}printf("輸入頂點v1到頂點v2和其邊的權重\n");for (int i = 0; i < G.eNum; i++) {int v1, v2, weights;scanf_s("%d%d%d", &v1, &v2, &weights);G.vNode[v1][v2] = weights;} } void print11(GraphMatrix G) {printf("鄰接矩陣如下:\n");for (int i = 0; i < G.vNum; i++) {for (int j = 0; j < G.vNum; j++) {printf("%d ", G.vNode[i][j]);}printf("\n");} } void DFSMatrixGraph(GraphMatrix G, int u) {//DFS遍歷鄰接矩陣visited[u] = true;printf("%d ", u);for (int i = 0; i < G.vNum; i++) {if (!visited[i] && G.vNode[u][i] < INF) {DFSMatrixGraph(G, i);}} } int main() {GraphMatrix G;initGMaxtix(G);print11(G);printf("\n");for (int i = 0; i < G.vNum; i++) {visited[i] = false;}printf("DFS遍歷鄰接矩陣\n");DFSMatrixGraph(G, 0);printf("\n");system("pause");return 0; }

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測試截圖：

時間復雜度O(n x n)，空間復雜度O(n)

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