数组 链表 栈

二、链表

• 临值查找 hard
  https://www.acwing.com/problem/content/description/138/

• 141.环形链表 medium
  https://leetcode-cn.com/problems/linked-list-cycle/

• 142.环形链表II medium
  https://leetcode-cn.com/problems/linked-list-cycle-ii/

• 206.反转链表 easy
  https://leetcode-cn.com/problems/reverse-linked-list/
  

• 25.K个一组翻转链表 hard
  https://leetcode-cn.com/problems/reverse-nodes-in-k-group/

一、数组

重点：哪些数据能要

• 88.合并有序数组 easy
  https://leetcode-cn.com/problems/merge-sorted-array/

• 26.去重 easy
  https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array/

• 283.移动零 easy
  https://leetcode-cn.com/problems/move-zeroes/