From abe8b5ab8bc8e5d3a1a27eda28b76a52d1ef0a20 Mon Sep 17 00:00:00 2001 From: CyC2018 <1029579233@qq.com> Date: Mon, 12 Mar 2018 15:09:38 +0800 Subject: [PATCH] auto commit --- notes/剑指 offer 题解.md | 30 +++++++++++------- pics/40d96c0d-156f-4eee-a183-2d597344f1cd.png | Bin 0 -> 14336 bytes pics/e7d7dc0d-fc22-4f95-8768-b8a216168792.jpg | Bin 0 -> 16384 bytes 3 files changed, 18 insertions(+), 12 deletions(-) create mode 100644 pics/40d96c0d-156f-4eee-a183-2d597344f1cd.png create mode 100644 pics/e7d7dc0d-fc22-4f95-8768-b8a216168792.jpg diff --git a/notes/剑指 offer 题解.md b/notes/剑指 offer 题解.md index 290fd3cd..a172c90f 100644 --- a/notes/剑指 offer 题解.md +++ b/notes/剑指 offer 题解.md @@ -25,7 +25,7 @@ * [19. 正则表达式匹配](#19-正则表达式匹配) * [20. 表示数值的字符串](#20-表示数值的字符串) * [21. 调整数组顺序使奇数位于偶数前面](#21-调整数组顺序使奇数位于偶数前面) - * [22. 链表中倒数第 k 个结点](#22-链表中倒数第-k-个结点) + * [22. 链表中倒数第 K 个结点](#22-链表中倒数第-k-个结点) * [23. 链表中环的入口结点](#23-链表中环的入口结点) * [24. 反转链表](#24-反转链表) * [25. 合并两个排序的链表](#25-合并两个排序的链表) @@ -763,20 +763,26 @@ public void reOrderArray(int[] array) { } ``` -## 22. 链表中倒数第 k 个结点 +## 22. 链表中倒数第 K 个结点 + +**解题思路** + +设链表的长度为 N。设两个指针 P1 和 P2,先让 P1 移动 K 个节点,则还有 N - K 个节点可以移动。此时让 P1 和 P2 同时移动,可以知道当 P1 移动到链表结尾时,P2 移动到 N - K 个节点处,该位置就是倒数第 K 个节点。 + +
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