X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=TP_9%2Fexo2%2Fclist.c;h=244a6877d31f111d79ea9aed02bbeb2eefdb186d;hb=eede13dc23d5e3377a9c8ba48d34409b3de02b45;hp=1ca2fc55fd945a57371ee0e34d77736fbd077822;hpb=65544a820bed85dd28908966d9b25bb3a934f114;p=TD_C.git

diff --git a/TP_9/exo2/clist.c b/TP_9/exo2/clist.c
index 1ca2fc5..244a687 100644
--- a/TP_9/exo2/clist.c
+++ b/TP_9/exo2/clist.c
@@ -1,5 +1,5 @@
-#include <stdlib.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <stdbool.h>
 
 #include "clist.h"
@@ -112,12 +112,53 @@ link_t* list_sort(link_t* head) {
             }
 	    head = head->next;
         }
-	/* Reloop at the beginning of the list until there's is values swaped */
+	/* Reloop at the beginning of the list until there's values swaped */
 	head = head_first;
     } while (isswaped);
     return head_first;
 }
 
+static link_t* _list_merge_sort(link_t* head1, link_t* head2) {
+    link_t* head_result = NULL;
+
+    if (head1 == NULL) {
+        return head2;
+    }
+    if (head2 == NULL) {
+        return head1;
+    }
+    if (head1->value < head2->value) {
+        head_result = head1;
+	head_result->next = _list_merge_sort(head1->next, head2);
+    } else {
+        head_result = head2;
+	head_result->next = _list_merge_sort(head1, head2->next);
+    }
+    return head_result;
+}
+
+link_t* list_merge_sort(link_t* head) {
+    link_t* head1;
+    link_t* head2;
+
+    if (head == NULL || head->next == NULL) {
+        return head;
+    }
+
+    head1 = head;
+    head2 = head->next;
+    while (head2 != NULL && head2->next != NULL) {
+        head = head->next;
+        head2 = head->next->next;
+    }
+    head2 = head->next;
+    head->next = NULL;
+
+    head1 = list_merge_sort(head1);
+    head2 = list_merge_sort(head2);
+    return _list_merge_sort(head1, head2);
+}
+
 unsigned list_count(link_t* head) {
     unsigned count = 0;