go se coucher

Chains_across_the_Island/Fundamentals/practice/practice.c

@@ -1,11 +1,47 @@
 #include "practice.h"
+#include "../../utils/lists.h"
+#include "../basics/basics.h"
 
 int is_palindrome(struct dlist *l)
 {
-    //FIXME
+    if (!l || l->next != NULL) return 1;
+
+    struct dlist *tmp = l;
+    int indexb = 0;
+
+    while (tmp->next != NULL) {
+
+        indexb ++;
+        tmp = tmp->next;
+    }
+
+    
+    struct dlist *back = tmp;
+    tmp = l;
+    int indexp = 0;
+
+    while (indexp < indexb){
+
+        if (tmp->data != back->data) return 0;
+
+        indexp ++;
+        indexb --;
+
+        tmp = tmp->next;
+        back = back->prev;
+    }
+
+    return 1;
 }
 
 struct list *reverse(struct list *l)
 {
-    //FIXME
+    struct list *tmp =l;
+    struct list *rslt = NULL; 
+   while(l != NULL){
+       rslt = list_append(rslt, l->data);
+       l = l->next;
+    } 
+
+    return rslt;
 }