1 files changed, 95 insertions, 94 deletions

diff --git a/sem3/algo/workshop2/dijkstra/dijkstra.c b/sem3/algo/workshop2/dijkstra/dijkstra.c
index c112c6d..d68492a 100644
--- a/sem3/algo/workshop2/dijkstra/dijkstra.c
+++ b/sem3/algo/workshop2/dijkstra/dijkstra.c
@@ -5,69 +5,70 @@
 #include "graph.h"
 
 typedef struct list_item {
-	vertex_t *v;
-	struct list_item *next;
-	struct list_item *prev;
+    vertex_t *v;
+    struct list_item *next;
+    struct list_item *prev;
 } list_item_t;
 
 typedef struct {
-	int len;
-	struct list_item *begin;
-	struct list_item *end;
+    int len;
+    struct list_item *begin;
+    struct list_item *end;
 } list_t;
 
 void list_push(list_t *s, vertex_t *v)
 {
-	// Create 
-	list_item_t *i = malloc(sizeof(list_item_t));
-	i->next = NULL;
-	i->prev = NULL;
-	i->v = v;
-
-	// Link
-	if ( s->len == 0 ) {
-		s->begin = i;
-	} else {
-		s->end->next = i;
-		i->prev = s->end;
-	}
-
-	s->end = i;
-	s->len++;
+    // Create
+    list_item_t *i = malloc(sizeof(list_item_t));
+    i->next = NULL;
+    i->prev = NULL;
+    i->v = v;
+
+    // Link
+    if (s->len == 0) {
+        s->begin = i;
+    } else {
+        s->end->next = i;
+        i->prev = s->end;
+    }
+
+    s->end = i;
+    s->len++;
 }
 
 vertex_t *list_pop_smallest(list_t *s)
 {
-	//printf("beginning %s(%d)\n", s->begin->v->ref, s->begin->v->dist);
-	list_item_t *smallest = s->begin;
-
-	// Search
-	list_item_t *i = s->begin;
-	while ( i ) {
-		if ( smallest->v->dist == -1 || (i->v->dist != -1 && i->v->dist < smallest->v->dist) ) {
-			smallest = i;
-		}
-		i = i->next;
-	}
-
-	if ( smallest == s->begin ) {
-		s->begin = smallest->next;
-	} else {
-		smallest->prev->next = smallest->next;
-	}
-
-	if ( smallest == s->end ) {
-		s->end = smallest->prev;
-	} else {
-		smallest->next->prev = smallest->prev;
-	}
-
-	vertex_t *v = smallest->v;
-	free(smallest);
-
-	s->len--;
-
-	return v;
+    //printf("beginning %s(%d)\n", s->begin->v->ref, s->begin->v->dist);
+    list_item_t *smallest = s->begin;
+
+    // Search
+    list_item_t *i = s->begin;
+    while (i) {
+        if (smallest->v->dist == -1 ||
+            (i->v->dist != -1 && i->v->dist < smallest->v->dist)) {
+            smallest = i;
+        }
+        i = i->next;
+    }
+
+    if (smallest == s->begin) {
+        s->begin = smallest->next;
+    } else {
+        smallest->prev->next = smallest->next;
+    }
+
+    if (smallest == s->end) {
+        s->end = smallest->prev;
+    } else {
+        smallest->next->prev = smallest->prev;
+    }
+
+    vertex_t *v = smallest->v;
+    free(smallest);
+
+    s->len--;
+
+    return v;
 }
 
 graph_t g;
@@ -75,59 +76,59 @@ graph_t g;
 // Assumes u has an edge to v
 void relax(vertex_t *u, vertex_t *v)
 {
-	// Get edge between these two guys
-	edge_t *e = u->adj;
-	while (e && e->next && strcmp(e->to->ref, v->ref)) { 
-		e = e->next; 
-	}
-
-	if ( v->dist == -1 || v->dist > (u->dist + e->weight) ) {
-		v->dist = u->dist + e->weight;
-		v->p = u;
-	}
+    // Get edge between these two guys
+    edge_t *e = u->adj;
+    while (e && e->next && strcmp(e->to->ref, v->ref)) {
+        e = e->next;
+    }
+
+    if (v->dist == -1 || v->dist > (u->dist + e->weight)) {
+        v->dist = u->dist + e->weight;
+        v->p = u;
+    }
 }
 
 void dijkstra(graph_t *g, vertex_t *s)
 {
-	list_t list;
-	list.len = 0;
-	list.end = list.begin = 0;
-
-	s->dist = 0;
-
-	{
-		vertex_t *v = vertex_next(g, NULL);
-		while ( v ) {
-			list_push(&list, v);
-			v = vertex_next(g, v);
-		}
-	}
-
-	while ( list.len ) {
-		vertex_t *u = list_pop_smallest(&list);
-		edge_t *e = u->adj;
-		while ( e ) {
-			relax(u, e->to );
-			e = e->next;
-		}
-	}
+    list_t list;
+    list.len = 0;
+    list.end = list.begin = 0;
+
+    s->dist = 0;
+
+    {
+        vertex_t *v = vertex_next(g, NULL);
+        while (v) {
+            list_push(&list, v);
+            v = vertex_next(g, v);
+        }
+    }
+
+    while (list.len) {
+        vertex_t *u = list_pop_smallest(&list);
+        edge_t *e = u->adj;
+        while (e) {
+            relax(u, e->to);
+            e = e->next;
+        }
+    }
 }
 
 int main()
 {
-	int count = graph_from_dot(stdin, &g);
+    int count = graph_from_dot(stdin, &g);
 
-	clock_t start, end;
-	double cpu_time_used;
+    clock_t start, end;
+    double cpu_time_used;
 
-	start = clock();
-	dijkstra(&g, graph_vertex(&g, "0"));
-	end = clock();
-	cpu_time_used = ((double) (end - start)) / CLOCKS_PER_SEC;
+    start = clock();
+    dijkstra(&g, graph_vertex(&g, "0"));
+    end = clock();
+    cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC;
 
-	printf("%d;%f\n", count, cpu_time_used);
+    printf("%d;%f\n", count, cpu_time_used);
 
-	//graph_to_dot(stdout, &g);
+    //graph_to_dot(stdout, &g);
 
-	return 0;
+    return 0;
 }