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/