From 6db1a2cdd3b96731f2e092d55d8c2136eabc52d0 Mon Sep 17 00:00:00 2001 From: Julian T Date: Tue, 11 Feb 2020 12:24:56 +0100 Subject: Rename and cleanup --- sem1/algo/mm10/bfs.c | 163 --------------------------------------------------- 1 file changed, 163 deletions(-) delete mode 100644 sem1/algo/mm10/bfs.c (limited to 'sem1/algo/mm10') diff --git a/sem1/algo/mm10/bfs.c b/sem1/algo/mm10/bfs.c deleted file mode 100644 index 982ecef..0000000 --- a/sem1/algo/mm10/bfs.c +++ /dev/null @@ -1,163 +0,0 @@ -#include -#include - -#define COL_WHITE 0 -#define COL_GRAY 1 -#define COL_BLACK 2 - -typedef struct list_node_t_struct { - struct list_node_t_struct *next; - void *val; -} list_node_t; - -typedef struct vertex_struct { - char ref; - int color; - int dist; - struct vertex_struct *p; - list_node_t *adj; -} vertex_t; - -vertex_t *create_vertex(char ref) { - // Get some space TODO check for null - vertex_t *v = malloc(sizeof(vertex_t)); - - // Set values - v->ref = ref; - v->color = COL_WHITE; - v->dist = -1; - v->p = NULL; - v->adj = NULL; -} - -vertex_t *add_adj(vertex_t *v, vertex_t *add) { - list_node_t *oldN = v->adj; - - // Create new list node - list_node_t *n = malloc(sizeof(list_node_t)); - n->val = add; - n->next = oldN; - - v->adj = n; - - return add; -} - -void print_adj(vertex_t *v) { - list_node_t *n = v->adj; - printf("[ "); - while(n) { - printf("%c ", *((char *)n->val)); - n = n->next; - } - printf("]\n"); -} - -vertex_t *vertexes[128]; - -void add_edge(char a, char b) { - // Does a exists - if( vertexes[a] == NULL ) { - vertexes[a] = create_vertex(a); - } - // What about b - if( vertexes[b] == NULL ) { - vertexes[b] = create_vertex(b); - } - - // Add edge - add_adj(vertexes[a], vertexes[b]); -} - -typedef struct { - unsigned int len; - list_node_t *in; - list_node_t *out; -} queue_t; - -void enqueue(queue_t *q, vertex_t *v) { - list_node_t *n = malloc(sizeof(list_node_t)); - n->val = v; - - // Add at end - list_node_t *old = q->in; - q->in = n; - if( old ) { - old->next = n; - } - - // Make sure we have an out - if( q->out == NULL ) { - q->out = n; - } - - q->len++; -} - -vertex_t *dequeue(queue_t *q) { - list_node_t *n = q->out; - if( n == NULL ) { - return NULL; - } - vertex_t *v = (vertex_t *)n->val; - - // Move out forward - q->out = n->next; - q->len--; - - // Free node and return - free(n); - return v; -} - -void bfs(vertex_t *s) { - queue_t q = {0, NULL, NULL }; - enqueue(&q, s); - s->dist = 0; - - while( q.len ) { - vertex_t *u = dequeue(&q); - list_node_t *n = u->adj; - while( n ) { - vertex_t *v = (vertex_t *)n->val; - if( v->color == COL_WHITE ) { - v->color = COL_GRAY; - v->dist = u->dist + 1; - v->p = u; - enqueue(&q, v); - } - n = n->next; - } - u->color = COL_BLACK; - } - -} - -int main() { - add_edge('s', 'd'); // S - add_edge('s', 'c'); - add_edge('s', 'a'); - add_edge('d', 'e'); // D - add_edge('d', 'c'); - add_edge('e', 'g'); // E - add_edge('e', 'f'); - add_edge('c', 's'); // C - add_edge('c', 'g'); - add_edge('g', 'f'); // G - - //print_adj(vertexes['d']); - bfs(vertexes['s']); - - char c; - while( (c = getchar()) != EOF) { - if( vertexes[c] != NULL ) { - print_adj(vertexes[c]); - printf("%d\n", vertexes[c]->dist); - } else if (c == 10) { - } else { - printf("Not found\n"); - } - } - - -} -- cgit v1.2.3