数组#
704.二分查找：https://leetcode.cn/problems/binary-search/ ↗
80.删除有序数组中的重复项 II：https://leetcode.cn/problems/remove-duplicates-from-sorted-array-ii ↗
977.有序数组的平方：https://leetcode.cn/problems/squares-of-a-sorted-array/ ↗
链表#
707.设计链表：https://leetcode.cn/problems/design-linked-list/ ↗
206.反转链表：https://leetcode.cn/problems/reverse-linked-list/ ↗
92.反转链表 II：https://leetcode.cn/problems/reverse-linked-list-ii/ ↗
61.旋转链表：https://leetcode.cn/problems/rotate-list/ ↗
栈与队列#
232.用栈实现队列：https://leetcode.cn/problems/implement-queue-using-stacks/ ↗
225.用队列实现栈：https://leetcode.cn/problems/implement-stack-using-queues/ ↗
347.前 K 个高频元素：https://leetcode.cn/problems/top-k-frequent-elements/ ↗
239.滑动窗口最大值：https://leetcode.cn/problems/sliding-window-maximum/ ↗
二叉树#
105.从前序与中序遍历构造二叉树：https://leetcode.cn/problems/construct-binary-tree-from-preorder-and-inorder-traversal/ ↗
117.填充每个节点的下一个右侧节点指针 II：https://leetcode.cn/problems/populating-next-right-pointers-in-each-node-ii ↗
236.二叉树的最近公共祖先：https://leetcode.cn/problems/lowest-common-ancestor-of-a-binary-tree/ ↗
129.求根节点到叶节点数字之和：https://leetcode.cn/problems/sum-root-to-leaf-numbers/ ↗
102.二叉树的层序遍历：https://leetcode.cn/problems/binary-tree-level-order-traversal/ ↗
530.二叉搜索树的最小绝对差：https://leetcode.cn/problems/minimum-absolute-difference-in-bst/ ↗
图#
200.岛屿数量：https://leetcode.cn/problems/number-of-islands/ ↗
207.课程表：https://leetcode.cn/problems/course-schedule/ ↗
210.课程表 II：https://leetcode.cn/problems/course-schedule-ii/ ↗
堆#
215.数组中的第 K 个最大元素:https://leetcode.cn/problems/kth-largest-element-in-an-array/ ↗
216.数据流的中位数:https://leetcode.cn/problems/find-median-from-data-stream/ ↗
217.前 K 个高频元素：https://leetcode.cn/problems/top-k-frequent-elements/ ↗