Solve: Remove Nth Node From End of List

2024/LeetCode/Remove Nth Node From End of List.cpp

@@ -0,0 +1,30 @@
+/**
+ * Definition for singly-linked list.
+ * struct ListNode {
+ *     int val;
+ *     ListNode *next;
+ *     ListNode() : val(0), next(nullptr) {}
+ *     ListNode(int x) : val(x), next(nullptr) {}
+ *     ListNode(int x, ListNode *next) : val(x), next(next) {}
+ * };
+ */
+class Solution {
+public:
+    ListNode* removeNthFromEnd(ListNode* head, int n) {
+        ListNode* res = new ListNode(0, head); // 반환할 복사본 생성
+        ListNode* dummy = res;
+
+        for (int i = 0; i < n; i++){
+            head = head->next;
+        }
+
+        while (head != nullptr){
+            head = head->next;
+            dummy = dummy->next;
+        }
+
+        dummy->next = dummy->next->next;
+
+        return res->next;
+    }
+};