solve 83

1 files changed, 35 insertions, 0 deletions

diff --git a/0083/main.c b/0083/main.c
new file mode 100644
index 0000000..1309a54
--- /dev/null
+++ b/0083/main.c
@@ -0,0 +1,35 @@
+#include <stdlib.h>
+
+struct ListNode {
+    int val;
+    struct ListNode *next;
+};
+
+// begin
+
+/**
+ * Definition for singly-linked list.
+ * struct ListNode {
+ *     int val;
+ *     struct ListNode *next;
+ * };
+ */
+
+struct ListNode* deleteDuplicates(struct ListNode* head) {
+    if (head == NULL) {
+        return head;
+    }
+    struct ListNode *prev = head;
+    struct ListNode *node = head->next;
+    while (node != NULL) {
+        if (node->val == prev->val) {
+            struct ListNode *next = node->next;
+            prev->next = next;
+            node = next;
+        } else {
+            node = node->next;
+            prev = prev->next;   
+        }
+    }
+    return head;
+}
\ No newline at end of file