From 1530ba6cabc4ac4a0b36560861b498f4105f2ffb Mon Sep 17 00:00:00 2001 From: ph9kiql5e <157842898@qq.com> Date: Sun, 19 Nov 2023 16:40:54 +0800 Subject: [PATCH] Delete 'A8code.c' --- A8code.c | 308 ------------------------------------------------------- 1 file changed, 308 deletions(-) delete mode 100644 A8code.c diff --git a/A8code.c b/A8code.c deleted file mode 100644 index e83fb40..0000000 --- a/A8code.c +++ /dev/null @@ -1,308 +0,0 @@ -#include -#include -#include -#include - -#define N 3 // 定义拼图的维度,这是一个3x3的拼图 - -typedef struct Node { - int puzzle[N][N]; // 存储拼图状态的数组 - struct Node* parent; // 指向父节点的指针,用于追踪路径 - int f, g, h; // A*算法中的 f, g, h 值 -} Node; - -// 创建新的拼图节点 -Node* createNode(int puzzle[N][N]) { - Node* newnode = (Node*)malloc(sizeof(Node)); - int i,j; - for(i=0;ipuzzle[i][j]=puzzle[i][j]; - } - } - newnode->parent=NULL; - newnode->f=0; - newnode->g=0; - newnode->h=0; - //请实现该函数 - - - -} - -// 检查两个拼图状态是否相同 -bool isSamePuzzle(int a[N][N], int b[N][N]) { - int i,j; - for(i=0;ipuzzle[i][j]!=goal->puzzle[i][j]) - { - h++; - } - } - } - return h; - // 计算不匹配的拼图块数量 - - -} - -// 移动操作,生成新的拼图状态555555555555555555555555555555555555555 -Node* move(Node* current, int dir) { - int key_x, key_y;//记录空白块的位置 - int i,j;// 找到空白块的位置 - for(i=0;ipuzzle[i][j]==0) - { - key_x=i; - key_y=j; - break; - } - } - } - int new_x,new_y; - new_x=key_x; - new_y=key_y;//给new_x、new_y赋值 - if(dir==0) - { - new_x--; - } - else if(dir==1) - { - new_x++; - } - else if(dir==2) - { - new_y--; - } - else if(dir==3) - { - new_y++; - } - if(new_x<0||new_x>2||new_y<0||new_y>2) - { - return NULL; - } - - // 根据移动方向更新新块的位置,上下左右移动 - - // 检查新位置是否在边界内 - - - // 创建新节点,复制当前拼图状态,并交换块的位置 - Node* new_node = createNode(current->puzzle); - new_node->puzzle[key_x][key_y] = current->puzzle[new_x][new_y]; - new_node->puzzle[new_x][new_y] = 0; - return new_node; -} - -// A*算法,寻找最短路径666666666666666666666666 -Node* AStar(Node* start, Node* goal) { - Node* OPEN[1000]; // 开放列表,用于存储待探索的节点 - Node* CLOSED[1000]; // 关闭列表,用于存储已探索的节点 - int OPEN_SIZE = 0; // 开放列表的大小 - int CLOSED_SIZE = 0; // 关闭列表的大小 - - OPEN[0] = start; // 将起始节点添加到开放列表 - OPEN_SIZE = 1; // 开放列表的大小设置为1 - CLOSED_SIZE = 0; // 关闭列表的大小设置为0 - - while (OPEN_SIZE > 0) {//对open列表进行操作 - int min_f = OPEN[0]->f;//初始化最小的f - int min_index = 0; - for(int i=0;iff; - min_index=i; - } - } - // 查找开放列表中具有最小f值的节点 - - - Node* current = OPEN[min_index]; // 获取具有最小f值的节点 - - if(isSamePuzzle(current->puzzle,goal->puzzle)) - { - return(current); - } - // 如果当前节点与目标状态匹配,表示找到解 - OPEN_SIZE--; - - //开放列表的大小减1,表示从开放列表中移除了一个节点 - - //将最小 f 值的节点移到开放列表的末尾,以便稍后将其添加到关闭列表中。 - //这是为了优化开放列表的结构。 - Node* temp = OPEN[min_index]; - OPEN[min_index] = OPEN[OPEN_SIZE]; - OPEN[OPEN_SIZE] = temp; - - //将当前节点添加到关闭列表,关闭列表大小加1 - CLOSED+CLOSED_SIZE=current; - CLOSED_SIZE++; - - int key = 0; - // 查找当前节点中空白块的位置 - for (int i = 0; i < N; i++) { - for (int j = 0; j < N; j++) { - if (current->puzzle[i][j] == 0) { - key = i * N + j; - break; - } - } - } - - // 尝试四个方向的移动操作 - for (int dir = 0; dir < 4; dir++) { - Node* new_node = move(current, dir); - - if (new_node != NULL && !isSamePuzzle(new_node->puzzle, current->puzzle)) { - //得到对应的g、f、h值 - int gNew = current->g + 1; - int hNew = heuristic(new_node, goal); - int fNew = gNew + hNew; - - bool in_OPEN = false; - int open_index = -1; - // 检查新节点是否在开放列表中 - for (int i = 0; i < OPEN_SIZE; i++) { - if (isSamePuzzle(new_node->puzzle, OPEN[i]->puzzle)) { - in_OPEN = true; - open_index = i; - break; - } - } - - bool in_CLOSED = false; - int closed_index = -1; - // 检查新节点是否在关闭列表中 - for (int i = 0; i < CLOSED_SIZE; i++) { - if (isSamePuzzle(new_node->puzzle, CLOSED[i]->puzzle)) { - in_CLOSED = true; - closed_index = i; - break; - } - } - //若该节点机不在开放列表中也不在关闭列表中 - if (!in_OPEN && !in_CLOSED) { - new_node->g=gNew; - new_node->h=hNew; - new_node->f=fNew; - current=CLOSED+CLOSED_SIZE-1; - //把gNew、hNew、fNew赋给new_nod对应的g、h、f值,并将其父节点设置为当前节点。 - - OPEN[OPEN_SIZE+1]=*new_node; - OPEN_SIZE++; - // 添加新节点new_node到开放列表,开放列表大小加1 - - } - //如果新节点已经在开放列表中,但新的 f 值更小,将更新开放列表中已存在节点的信息。 - else if (in_OPEN && fNew < OPEN[open_index]->f) { - OPEN[open_index]->f=fNew; - OPEN[open_index]->g=gNew; - OPEN[open_index]->h=hNew; - - } - } - } - } - - return NULL; // 无解 -} - -// 打印解路径 -void printPath(Node* final) { - if (final == NULL) { - return; - } - printPath(final->parent); // 递归打印路径 - for (int i = 0; i < N; i++) { - if (i%3==0){ - printf("-------\n"); - } - for (int j = 0; j < N; j++) { - printf("%d ", final->puzzle[i][j]); - } - - printf("\n"); - - } -} - -int main() { - //int start[N][N] = {{2, 0, 3}, {1, 8, 4}, {7, 6, 5}}; - //int target[N][N] = {{1, 2, 3}, {8, 0, 4}, {7, 6, 5}}; - - // int start[N][N] = {{2, 8, 3}, {1, 6, 4}, {7, 0, 5}}; - // int target[N][N] = {{1, 2, 3}, {8, 0, 4}, {7, 6, 5}}; - - int start[N][N] = {{2, 8, 3}, {1, 0, 4}, {7, 6, 5}}; - int target[N][N] = {{1, 2, 3}, {8, 0, 4}, {7, 6, 5}}; - Node* init = createNode(start); - Node* goal = createNode(target); - - Node* final = AStar(init, goal); - if (final) { - printf("This problem has a solution:\n"); - printPath(final); // 打印解路径 - } else { - printf("This problem has no solution!\n"); - } - - return 0; -}