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<!-- GFM-TOC -->
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* [找出两个链表的交点](#找出两个链表的交点)
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* [链表反转](#链表反转)
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* [归并两个有序的链表](#归并两个有序的链表)
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* [从有序链表中删除重复节点](#从有序链表中删除重复节点)
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* [删除链表的倒数第 n 个节点](#删除链表的倒数第-n-个节点)
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* [交换链表中的相邻结点](#交换链表中的相邻结点)
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* [链表求和](#链表求和)
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* [回文链表](#回文链表)
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* [分隔链表](#分隔链表)
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* [链表元素按奇偶聚集](#链表元素按奇偶聚集)
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* [1. 找出两个链表的交点](#1-找出两个链表的交点)
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* [2. 链表反转](#2-链表反转)
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* [3. 归并两个有序的链表](#3-归并两个有序的链表)
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* [4. 从有序链表中删除重复节点](#4-从有序链表中删除重复节点)
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* [5. 删除链表的倒数第 n 个节点](#5-删除链表的倒数第-n-个节点)
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* [6. 交换链表中的相邻结点](#6-交换链表中的相邻结点)
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* [7. 链表求和](#7-链表求和)
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* [8. 回文链表](#8-回文链表)
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* [9. 分隔链表](#9-分隔链表)
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* [10. 链表元素按奇偶聚集](#10-链表元素按奇偶聚集)
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<!-- GFM-TOC -->
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链表是空节点,或者有一个值和一个指向下一个链表的指针,因此很多链表问题可以用递归来处理。
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# 找出两个链表的交点
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# 1. 找出两个链表的交点
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[160. Intersection of Two Linked Lists (Easy)](https://leetcode.com/problems/intersection-of-two-linked-lists/description/)
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@ -48,7 +48,7 @@ public ListNode getIntersectionNode(ListNode headA, ListNode headB) {
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- 把第一个链表的结尾连接到第二个链表的开头,看第二个链表是否存在环;
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- 或者直接比较两个链表的最后一个节点是否相同。
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# 链表反转
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# 2. 链表反转
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[206. Reverse Linked List (Easy)](https://leetcode.com/problems/reverse-linked-list/description/)
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@ -82,7 +82,7 @@ public ListNode reverseList(ListNode head) {
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}
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```
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# 归并两个有序的链表
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# 3. 归并两个有序的链表
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[21. Merge Two Sorted Lists (Easy)](https://leetcode.com/problems/merge-two-sorted-lists/description/)
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@ -100,7 +100,7 @@ public ListNode mergeTwoLists(ListNode l1, ListNode l2) {
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}
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```
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# 从有序链表中删除重复节点
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# 4. 从有序链表中删除重复节点
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[83. Remove Duplicates from Sorted List (Easy)](https://leetcode.com/problems/remove-duplicates-from-sorted-list/description/)
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@ -117,7 +117,7 @@ public ListNode deleteDuplicates(ListNode head) {
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}
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```
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# 删除链表的倒数第 n 个节点
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# 5. 删除链表的倒数第 n 个节点
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[19. Remove Nth Node From End of List (Medium)](https://leetcode.com/problems/remove-nth-node-from-end-of-list/description/)
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@ -143,7 +143,7 @@ public ListNode removeNthFromEnd(ListNode head, int n) {
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}
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```
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# 交换链表中的相邻结点
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# 6. 交换链表中的相邻结点
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[24. Swap Nodes in Pairs (Medium)](https://leetcode.com/problems/swap-nodes-in-pairs/description/)
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@ -171,7 +171,7 @@ public ListNode swapPairs(ListNode head) {
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}
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```
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# 链表求和
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# 7. 链表求和
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[445. Add Two Numbers II (Medium)](https://leetcode.com/problems/add-two-numbers-ii/description/)
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@ -210,7 +210,7 @@ private Stack<Integer> buildStack(ListNode l) {
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}
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```
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# 回文链表
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# 8. 回文链表
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[234. Palindrome Linked List (Easy)](https://leetcode.com/problems/palindrome-linked-list/description/)
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@ -259,7 +259,7 @@ private boolean isEqual(ListNode l1, ListNode l2) {
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}
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```
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# 分隔链表
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# 9. 分隔链表
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[725. Split Linked List in Parts(Medium)](https://leetcode.com/problems/split-linked-list-in-parts/description/)
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@ -299,7 +299,7 @@ public ListNode[] splitListToParts(ListNode root, int k) {
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}
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```
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# 链表元素按奇偶聚集
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# 10. 链表元素按奇偶聚集
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[328. Odd Even Linked List (Medium)](https://leetcode.com/problems/odd-even-linked-list/description/)
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