本文实例讲述了C语言使用深度优先搜索算法解决迷宫问题。分享给大家供大家参考，具体如下：
深度优先搜索
伪代码
（Pseudocode）如下：
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将起点标记为已走过并压栈;while (栈非空) {从栈顶弹出一个点p;if (p这个点是终点)break;否则沿右、下、左、上四个方向探索相邻的点if (和p相邻的点有路可走，并且还没走过)将相邻的点标记为已走过并压栈，它的前趋就是p点;}if (p点是终点) {打印p点的坐标;while (p点有前趋) {p点 = p点的前趋;打印p点的坐标;}} else没有路线可以到达终点; |
C语言代码：
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#include <stdio.h>#define MAX_ROW 5#define MAX_COL 5struct point { int row, col; } stack[512];int top = 0;void push(struct point p){ stack[top++] = p;}struct point pop(void){ return stack[--top];}int is_empty(void){ return top == 0;}int maze[MAX_ROW][MAX_COL] = { 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 0,};void print_maze(void){ int i, j; for (i = 0; i < MAX_ROW; i++) { for (j = 0; j < MAX_COL; j++) printf("%d ", maze[i][j]); putchar('\n'); } printf("*********\n");}struct point predecessor[MAX_ROW][MAX_COL] = { {{-1,-1}, {-1,-1}, {-1,-1}, {-1,-1}, {-1,-1}}, {{-1,-1}, {-1,-1}, {-1,-1}, {-1,-1}, {-1,-1}}, {{-1,-1}, {-1,-1}, {-1,-1}, {-1,-1}, {-1,-1}}, {{-1,-1}, {-1,-1}, {-1,-1}, {-1,-1}, {-1,-1}}, {{-1,-1}, {-1,-1}, {-1,-1}, {-1,-1}, {-1,-1}},};void visit(int row, int col, struct point pre){ struct point visit_point = { row, col }; maze[row][col] = 2; predecessor[row][col] = pre; push(visit_point);}int main(void){ struct point p = { 0, 0 }; maze[p.row][p.col] = 2; push(p); while (!is_empty()) { p = pop(); if (p.row == MAX_ROW - 1 /* goal */ && p.col == MAX_COL - 1) break; if (p.col+1 < MAX_COL /* right */ && maze[p.row][p.col+1] == 0) visit(p.row, p.col+1, p); if (p.row+1 < MAX_ROW /* down */ && maze[p.row+1][p.col] == 0) visit(p.row+1, p.col, p); if (p.col-1 >= 0 /* left */ && maze[p.row][p.col-1] == 0) visit(p.row, p.col-1, p); if (p.row-1 >= 0 /* up */ && maze[p.row-1][p.col] == 0) visit(p.row-1, p.col, p); print_maze(); } if (p.row == MAX_ROW - 1 && p.col == MAX_COL - 1) { printf("(%d, %d)\n", p.row, p.col); while (predecessor[p.row][p.col].row != -1) { p = predecessor[p.row][p.col]; printf("(%d, %d)\n", p.row, p.col); } } else printf("No path!\n"); return 0;} |
希望本文所述对大家C语言程序设计有所帮助。
原文链接：http://blog.csdn.net/e421083458/article/details/39185171
