ajout

Chains_across_the_Island/Fundamentals/basics/basics.c

@@ -1,46 +1,101 @@
 #include "basics.h"
-
+#include <stddef.h>
+#include <stdlib.h>
 struct list *list_append(struct list *l, int e)
 {
-  //FIXME
-}
-
-size_t list_count(struct list *l)
-{
-    //FIXME
-}
-
-int list_insert(struct list **l, size_t index, int e)
-{
-}
-
-struct list *list_get(struct list *l, size_t index)
-{
+    if (!l) return NULL;
+    struct list *tmp = l;
+    
+    struct list *new_node = calloc(1, sizeof(struct list));
+    if (!new_node) return NULL;
+
+    new_node->data = e;
+    if(!tmp) return new_node;
+    
+    while (tmp->next) tmp = tmp->next;
+    tmp->next = new_node;
+    return l;
+
+}
+size_t list_count(struct list *l){
+    
+    int nbr_nodes = 0;
+    if (!l) return nbr_nodes;
+    
+    struct list *tmp = l;
+    
+    //nbr_nodes ++;
+    while(tmp->next != NULL) {
+        nbr_nodes ++;
+        tmp = tmp->next;
+    }
+
+    return nbr_nodes;
     
-    //FIXME
 }
 
-struct list *list_find(struct list *l, int e)
-{
-    //FIXME
+int list_insert(struct list **l, size_t index, int e){
+
+    if(!l) return 1;
+    
+    if (list_count(*l) < index) return 1;
+
+    struct list *new_node = malloc(sizeof(struct list));
+    if(!new_node) return 1;
+    
+    new_node->data = e;
+
+    struct list *tmp = *l;
+    size_t ind = 0;
+
+    while(tmp != NULL && ind <index - 1){
+
+        tmp = tmp->next;
+        ind ++;
+    }
+
+    new_node->next = tmp->next;
+    tmp->next = new_node;
+
+    return 0;
+
 }
 
-struct list *list_delete_at(struct list **l, size_t index)
-{
-    //FIXME
+struct list *list_get(struct list *l, size_t index){
+
+    if(!l) return NULL;
+    //if(list_count(l) < index) return NULL;
+
+    struct list *tmp = l;
+    size_t ind = 0;
+    while(tmp->next != NULL && ind != index){
+        tmp = tmp->next;
+        ind ++;
+    }
+    if(ind >= index) return NULL;
+    return tmp;
+
 }
 
-int list_remove(struct list **l, int e)
-{
-    //FIXME
+void list_destroy(struct list *l){
+
+    if (!l) return;
+    list_destroy(l->next);
+    free(l);
 }
 
-void list_destroy(struct list *l)
+int main(void)
 {
-    //FIXME
+    struct list *l = NULL;
+
+    l = list_append(l, 42);    // l = [42] -> NULL
+    l = list_append(l, 7);     // l = [7] -> [42] -> NULL
+    list_count(NULL);               // 0
+    list_count(l);  // 3
+
+    // Here, you should call "list_destroy(l);" when it will be implemented to
+    // prevent any memory leak
+
+    return 0;
 }
 
-void list_print(struct list *l)
-{
-    //FIXME
-}