push de test

Chains_across_the_Island/Fundamentals/basics/basics.c

@@ -1,16 +1,16 @@
 #include "basics.h"
 #include <stddef.h>
+#include <stdio.h>
 #include <stdlib.h>
 struct list *list_append(struct list *l, int e)
 {
-    if (!l) return NULL;
-    struct list *tmp = l;
+   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;
+    if(!l) return new_node;
     
     while (tmp->next) tmp = tmp->next;
     tmp->next = new_node;
@@ -84,17 +84,99 @@ void list_destroy(struct list *l){
     free(l);
 }
 
+struct list *list_find(struct list *l, int e){
+
+    if(!l) return NULL;
+
+    struct list *tmp = l;
+    
+    while (tmp->data != e) tmp = tmp->next;
+
+    return tmp;
+
+}
+
+struct list *list_delete_at(struct list **l, size_t index){
+
+    struct list *old = *l;
+
+    if ( index == 0){
+        *l = old->next;
+        return old;
+    }
+
+    struct list *tmp = *l;
+
+    size_t ind = 0;
+    while(tmp->next != NULL && ind < index - 1){
+        
+        tmp = tmp->next;
+        ind ++;
+    }
+
+    if (ind < index) {
+        old = tmp->next;
+        tmp->next = old->next;
+        return old;
+    }
+    return NULL;
+
+}
+int list_remove(struct list **l, int e){
+
+    struct list *old = *l;
+    struct list *tmp = *l;
+
+    while (tmp->next != NULL && tmp->data != e){
+    
+        tmp = tmp->next;
+    }
+
+    if(tmp->data == e) {
+    
+        old = tmp->next;
+        tmp->next = old->next;
+        return 1;
+    }
+    return 0;
+}
+
+void list_print(struct list *l){
+
+    if(!l) {
+        printf("\n");
+        return ;
+    }
+
+    struct list *tmp = l;
+
+    while (tmp != NULL){
+        
+        printf("%i",tmp->data);
+
+        if (tmp->next != NULL) printf(" -> ");
+
+        tmp = tmp->next;
+
+    }
+    printf("\n");
+}
+
 int main(void)
 {
     struct list *l = NULL;
 
     l = list_append(l, 42);    // l = [42] -> NULL
+    list_print(l);
     l = list_append(l, 7);     // l = [7] -> [42] -> NULL
-    list_count(NULL);               // 0
-    list_count(l);  // 3
+    list_print(l);
 
-    // Here, you should call "list_destroy(l);" when it will be implemented to
-    // prevent any memory leak
+        // l = [1] -> [2] -> [3]
+    list_insert(&l, 1, 99);  // l = [1] -> [99] -> [2] -> [3], and list_insert returns 0
+    list_insert(&l, 9, 99);  // list unchanged, returns 1
+
+
+    list_destroy(l);
 
     return 0;
 }