From 77d0c355b346f699bb5d3252c660d92c9c41d5bf Mon Sep 17 00:00:00 2001
From: Powfu <1875065753@qq.com>
Date: Tue, 26 Dec 2023 13:05:05 +0000
Subject: [PATCH] =?UTF-8?q?add=202101040022/=E6=8E=92=E5=BA=8F=E9=93=BE?=
 =?UTF-8?q?=E8=A1=A8.cpp.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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Signed-off-by: Powfu <1875065753@qq.com>
---
 ...2\345\272\217\351\223\276\350\241\250.cpp" | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 "2101040022/\346\216\222\345\272\217\351\223\276\350\241\250.cpp"

diff --git "a/2101040022/\346\216\222\345\272\217\351\223\276\350\241\250.cpp" "b/2101040022/\346\216\222\345\272\217\351\223\276\350\241\250.cpp"
new file mode 100644
index 00000000..0009412e
--- /dev/null
+++ "b/2101040022/\346\216\222\345\272\217\351\223\276\350\241\250.cpp"
@@ -0,0 +1,47 @@
+class Solution {
+public:
+    ListNode* sortList(ListNode* head) {
+        if (!head || !head->next) { return head; }
+        ListNode* slow = head;//慢指针
+        ListNode* fast = head;//快指针
+        ListNode* precious = head;
+        while (fast && fast->next) {
+            precious = slow;
+            slow = slow->next;
+            fast = fast->next->next;
+        }
+        precious->next = NULL;//断开
+        return merge(sortList(head), sortList(slow));
+    }
+    // 或者可以这样写，无precious版本
+    //ListNode* sortList(ListNode* head) {
+    //    if (!head || !head->next) { return head; }
+    //    ListNode* slow = head;//慢指针
+    //    ListNode* fast = head->next;//快指针
+    //    while (fast && fast->next) {
+    //        slow = slow->next;
+    //        fast = fast->next->next;
+    //    }
+    //    ListNode* right = slow->next;
+    //    slow->next = NULL;
+    //    return merge(sortList(head), sortList(right));
+    //}
+    ListNode* merge(ListNode* list1, ListNode* list2) {// 合并两个链表模板
+        if (list1 == NULL) {
+            return list2;
+        }
+        if (list2 == NULL) {
+            return list1;
+        }
+
+        if (list1->val < list2->val) {
+            list1->next = merge(list1->next, list2);
+            return list1;
+        }
+        else {
+            list2->next = merge(list1, list2->next);
+            return list2;
+        }
+    }
+
+};
\ No newline at end of file
-- 
Gitee