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‎problems/average-of-levels-in-binary-tree/README.md

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### Similar Questions
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1. [Binary Tree Level Order Traversal](../binary-tree-level-order-traversal) (Medium)
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1. [Binary Tree Level Order Traversal II](../binary-tree-level-order-traversal-ii) (Easy)
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1. [Binary Tree Level Order Traversal II](../binary-tree-level-order-traversal-ii) (Medium)

‎tag/README.md

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| 29 | [Minimax](minimax/README.md) | [极小化极大](https://openset.github.io/tags/minimax/) | | 30 | [Binary Indexed Tree](binary-indexed-tree/README.md) | [树状数组](https://openset.github.io/tags/binary-indexed-tree/) |
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| 31 | [Brainteaser](brainteaser/README.md) | [脑筋急转弯](https://openset.github.io/tags/brainteaser/) | | 32 | [Line Sweep](line-sweep/README.md) | [Line Sweep](https://openset.github.io/tags/line-sweep/) |
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| 33 | [Random](random/README.md) | [Random](https://openset.github.io/tags/random/) | | 34 | [Topological Sort](topological-sort/README.md) | [拓扑排序](https://openset.github.io/tags/topological-sort/) |
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| 35 | [Binary Search Tree](binary-search-tree/README.md) | [二叉搜索树](https://openset.github.io/tags/binary-search-tree/) | | 36 | [](dequeue/README.md) | [](https://openset.github.io/tags/dequeue/) |
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| 35 | [Binary Search Tree](binary-search-tree/README.md) | [二叉搜索树](https://openset.github.io/tags/binary-search-tree/) | | 36 | [Dequeue](dequeue/README.md) | [Dequeue](https://openset.github.io/tags/dequeue/) |
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| 37 | [Rolling Hash](rolling-hash/README.md) | [Rolling Hash](https://openset.github.io/tags/rolling-hash/) | | 38 | [Suffix Array](suffix-array/README.md) | [Suffix Array](https://openset.github.io/tags/suffix-array/) |
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| 39 | [Rejection Sampling](rejection-sampling/README.md) | [Rejection Sampling](https://openset.github.io/tags/rejection-sampling/) | | 40 | [Reservoir Sampling](reservoir-sampling/README.md) | [蓄水池抽样](https://openset.github.io/tags/reservoir-sampling/) |
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| 41 | [](meet-in-the-middle/README.md) | [](https://openset.github.io/tags/meet-in-the-middle/) | | 42 | [Memoization](memoization/README.md) | [记忆化](https://openset.github.io/tags/memoization/) |
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| 43 | [](oop/README.md) | [](https://openset.github.io/tags/oop/) |
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| 41 | [Meet In The Middle](meet-in-the-middle/README.md) | [Meet In The Middle](https://openset.github.io/tags/meet-in-the-middle/) | | 42 | [Memoization](memoization/README.md) | [记忆化](https://openset.github.io/tags/memoization/) |
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| 43 | [OOP](oop/README.md) | [OOP](https://openset.github.io/tags/oop/) |

‎tag/array/README.md

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‎tag/dequeue/README.md

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<!--|@home https://github.com/openset/leetcode |-->
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## [话题分类](../README.md) >
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## [话题分类](../README.md) > Dequeue
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‎tag/dynamic-programming/README.md

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‎tag/geometry/README.md

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| # | 题目 | 标签 | 难度 |
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| 1610 | [可见点的最大数目](../../problems/maximum-number-of-visible-points) | [[几何](../geometry/README.md)] [[双指针](../two-pointers/README.md)] | Hard |
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| 1515 | [服务中心的最佳位置](../../problems/best-position-for-a-service-centre) | [[几何](../geometry/README.md)] | Hard |
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| 1453 | [圆形靶内的最大飞镖数量](../../problems/maximum-number-of-darts-inside-of-a-circular-dartboard) | [[几何](../geometry/README.md)] | Hard |
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| 1401 | [圆和矩形是否有重叠](../../problems/circle-and-rectangle-overlapping) | [[几何](../geometry/README.md)] | Medium |
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| 1266 | [访问所有点的最小时间](../../problems/minimum-time-visiting-all-points) | [[几何](../geometry/README.md)] [[数组](../array/README.md)] | Easy |
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| 1232 | [缀点成线](../../problems/check-if-it-is-a-straight-line) | [[几何](../geometry/README.md)] [[数组](../array/README.md)] [[数学](../math/README.md)] | Easy |
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| 963 | [最小面积矩形 II](../../problems/minimum-area-rectangle-ii) | [[几何](../geometry/README.md)] [[数学](../math/README.md)] | Medium |
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| 892 | [三维形体的表面积](../../problems/surface-area-of-3d-shapes) | [[几何](../geometry/README.md)] [[数学](../math/README.md)] | Easy |
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| 587 | [安装栅栏](../../problems/erect-the-fence) | [[几何](../geometry/README.md)] | Hard |

‎tag/line-sweep/README.md

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| # | 题目 | 标签 | 难度 |
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| 1288 | [删除被覆盖区间](../../problems/remove-covered-intervals) | [[贪心算法](../greedy/README.md)] [[排序](../sort/README.md)] [[Line Sweep](../line-sweep/README.md)] | Medium |
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| 1272 | [删除区间](../../problems/remove-interval) 🔒 | [[数学](../math/README.md)] [[Line Sweep](../line-sweep/README.md)] | Medium |
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| 1229 | [安排会议日程](../../problems/meeting-scheduler) 🔒 | [[排序](../sort/README.md)] [[双指针](../two-pointers/README.md)] [[Line Sweep](../line-sweep/README.md)] | Medium |
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| 850 | [矩形面积 II](../../problems/rectangle-area-ii) | [[线段树](../segment-tree/README.md)] [[Line Sweep](../line-sweep/README.md)] | Hard |
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| 391 | [完美矩形](../../problems/perfect-rectangle) | [[Line Sweep](../line-sweep/README.md)] | Hard |
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| 218 | [天际线问题](../../problems/the-skyline-problem) | [[堆](../heap/README.md)] [[树状数组](../binary-indexed-tree/README.md)] [[线段树](../segment-tree/README.md)] [[分治算法](../divide-and-conquer/README.md)] [[Line Sweep](../line-sweep/README.md)] | Hard |

‎tag/linked-list/README.md

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| # | 题目 | 标签 | 难度 |
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| 1721 | [交换链表中的节点](../../problems/swapping-nodes-in-a-linked-list) | [[链表](../linked-list/README.md)] | Medium |
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| 1670 | [设计前中后队列](../../problems/design-front-middle-back-queue) | [[设计](../design/README.md)] [[链表](../linked-list/README.md)] | Medium |
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| 1669 | [合并两个链表](../../problems/merge-in-between-linked-lists) | [[链表](../linked-list/README.md)] | Medium |
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| 1634 | [求两个多项式链表的和](../../problems/add-two-polynomials-represented-as-linked-lists) 🔒 | [[链表](../linked-list/README.md)] | Medium |
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| 1474 | [删除链表 M 个节点之后的 N 个节点](../../problems/delete-n-nodes-after-m-nodes-of-a-linked-list) 🔒 | [[链表](../linked-list/README.md)] | Easy |
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| 1367 | [二叉树中的列表](../../problems/linked-list-in-binary-tree) | [[树](../tree/README.md)] [[链表](../linked-list/README.md)] [[动态规划](../dynamic-programming/README.md)] | Medium |
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| 1290 | [二进制链表转整数](../../problems/convert-binary-number-in-a-linked-list-to-integer) | [[位运算](../bit-manipulation/README.md)] [[链表](../linked-list/README.md)] | Easy |
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| 1171 | [从链表中删去总和值为零的连续节点](../../problems/remove-zero-sum-consecutive-nodes-from-linked-list) | [[链表](../linked-list/README.md)] | Medium |
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| 1019 | [链表中的下一个更大节点](../../problems/next-greater-node-in-linked-list) | [[栈](../stack/README.md)] [[链表](../linked-list/README.md)] | Medium |
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| 876 | [链表的中间结点](../../problems/middle-of-the-linked-list) | [[链表](../linked-list/README.md)] | Easy |
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| 817 | [链表组件](../../problems/linked-list-components) | [[链表](../linked-list/README.md)] | Medium |
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| 725 | [分隔链表](../../problems/split-linked-list-in-parts) | [[链表](../linked-list/README.md)] | Medium |
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| 708 | [循环有序列表的插入](../../problems/insert-into-a-sorted-circular-linked-list) 🔒 | [[链表](../linked-list/README.md)] | Medium |
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| 707 | [设计链表](../../problems/design-linked-list) | [[设计](../design/README.md)] [[链表](../linked-list/README.md)] | Medium |
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| 445 | [两数相加 II](../../problems/add-two-numbers-ii) | [[链表](../linked-list/README.md)] | Medium |
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| 430 | [扁平化多级双向链表](../../problems/flatten-a-multilevel-doubly-linked-list) | [[深度优先搜索](../depth-first-search/README.md)] [[链表](../linked-list/README.md)] | Medium |
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| 426 | [将二叉搜索树转化为排序的双向链表](../../problems/convert-binary-search-tree-to-sorted-doubly-linked-list) 🔒 | [[树](../tree/README.md)] [[链表](../linked-list/README.md)] [[分治算法](../divide-and-conquer/README.md)] | Medium |
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| 379 | [电话目录管理系统](../../problems/design-phone-directory) 🔒 | [[设计](../design/README.md)] [[链表](../linked-list/README.md)] | Medium |
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| 369 | [给单链表加一](../../problems/plus-one-linked-list) 🔒 | [[递归](../recursion/README.md)] [[链表](../linked-list/README.md)] | Medium |
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| 328 | [奇偶链表](../../problems/odd-even-linked-list) | [[链表](../linked-list/README.md)] | Medium |
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| 237 | [删除链表中的节点](../../problems/delete-node-in-a-linked-list) | [[链表](../linked-list/README.md)] | Easy |
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| 234 | [回文链表](../../problems/palindrome-linked-list) | [[链表](../linked-list/README.md)] [[双指针](../two-pointers/README.md)] | Easy |
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| 206 | [反转链表](../../problems/reverse-linked-list) | [[链表](../linked-list/README.md)] | Easy |
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| 203 | [移除链表元素](../../problems/remove-linked-list-elements) | [[链表](../linked-list/README.md)] | Easy |
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| 160 | [相交链表](../../problems/intersection-of-two-linked-lists) | [[链表](../linked-list/README.md)] | Easy |
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| 148 | [排序链表](../../problems/sort-list) | [[排序](../sort/README.md)] [[链表](../linked-list/README.md)] | Medium |
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| 147 | [对链表进行插入排序](../../problems/insertion-sort-list) | [[排序](../sort/README.md)] [[链表](../linked-list/README.md)] | Medium |
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| 143 | [重排链表](../../problems/reorder-list) | [[链表](../linked-list/README.md)] | Medium |
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| 142 | [环形链表 II](../../problems/linked-list-cycle-ii) | [[链表](../linked-list/README.md)] [[双指针](../two-pointers/README.md)] | Medium |
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| 141 | [环形链表](../../problems/linked-list-cycle) | [[链表](../linked-list/README.md)] [[双指针](../two-pointers/README.md)] | Easy |
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| 138 | [复制带随机指针的链表](../../problems/copy-list-with-random-pointer) | [[哈希表](../hash-table/README.md)] [[链表](../linked-list/README.md)] | Medium |
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| 109 | [有序链表转换二叉搜索树](../../problems/convert-sorted-list-to-binary-search-tree) | [[深度优先搜索](../depth-first-search/README.md)] [[链表](../linked-list/README.md)] | Medium |
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| 92 | [反转链表 II](../../problems/reverse-linked-list-ii) | [[链表](../linked-list/README.md)] | Medium |
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| 86 | [分隔链表](../../problems/partition-list) | [[链表](../linked-list/README.md)] [[双指针](../two-pointers/README.md)] | Medium |
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| 83 | [删除排序链表中的重复元素](../../problems/remove-duplicates-from-sorted-list) | [[链表](../linked-list/README.md)] | Easy |
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| 82 | [删除排序链表中的重复元素 II](../../problems/remove-duplicates-from-sorted-list-ii) | [[链表](../linked-list/README.md)] | Medium |
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| 61 | [旋转链表](../../problems/rotate-list) | [[链表](../linked-list/README.md)] [[双指针](../two-pointers/README.md)] | Medium |
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| 25 | [K 个一组翻转链表](../../problems/reverse-nodes-in-k-group) | [[链表](../linked-list/README.md)] | Hard |
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| 24 | [两两交换链表中的节点](../../problems/swap-nodes-in-pairs) | [[递归](../recursion/README.md)] [[链表](../linked-list/README.md)] | Medium |
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| 23 | [合并K个升序链表](../../problems/merge-k-sorted-lists) | [[堆](../heap/README.md)] [[链表](../linked-list/README.md)] [[分治算法](../divide-and-conquer/README.md)] | Hard |
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| 21 | [合并两个有序链表](../../problems/merge-two-sorted-lists) | [[递归](../recursion/README.md)] [[链表](../linked-list/README.md)] | Easy |
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| 19 | [删除链表的倒数第 N 个结点](../../problems/remove-nth-node-from-end-of-list) | [[链表](../linked-list/README.md)] [[双指针](../two-pointers/README.md)] | Medium |
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| 2 | [两数相加](../../problems/add-two-numbers) | [[递归](../recursion/README.md)] [[链表](../linked-list/README.md)] [[数学](../math/README.md)] | Medium |

‎tag/meet-in-the-middle/README.md

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<!--|@home https://github.com/openset/leetcode |-->
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## [话题分类](../README.md) >
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## [话题分类](../README.md) > Meet In The Middle
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‎tag/oop/README.md

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## [话题分类](../README.md) >
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## [话题分类](../README.md) > OOP
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‎tag/ordered-map/README.md

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| 1675 | [数组的最小偏移量](../../problems/minimize-deviation-in-array) | [[堆](../heap/README.md)] [[Ordered Map](../ordered-map/README.md)] | Hard |
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| 1649 | [通过指令创建有序数组](../../problems/create-sorted-array-through-instructions) | [[树状数组](../binary-indexed-tree/README.md)] [[线段树](../segment-tree/README.md)] [[二分查找](../binary-search/README.md)] [[Ordered Map](../ordered-map/README.md)] | Hard |
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| 1606 | [找到处理最多请求的服务器](../../problems/find-servers-that-handled-most-number-of-requests) | [[Ordered Map](../ordered-map/README.md)] | Hard |
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| 1604 | [警告一小时内使用相同员工卡大于等于三次的人](../../problems/alert-using-same-key-card-three-or-more-times-in-a-one-hour-period) | [[字符串](../string/README.md)] [[Ordered Map](../ordered-map/README.md)] | Medium |
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| 975 | [奇偶跳](../../problems/odd-even-jump) | [[栈](../stack/README.md)] [[动态规划](../dynamic-programming/README.md)] [[Ordered Map](../ordered-map/README.md)] | Hard |
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| 855 | [考场就座](../../problems/exam-room) | [[Ordered Map](../ordered-map/README.md)] | Medium |
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| 846 | [一手顺子](../../problems/hand-of-straights) | [[Ordered Map](../ordered-map/README.md)] | Medium |
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| 732 | [我的日程安排表 III](../../problems/my-calendar-iii) | [[线段树](../segment-tree/README.md)] [[Ordered Map](../ordered-map/README.md)] | Hard |
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| 731 | [我的日程安排表 II](../../problems/my-calendar-ii) | [[Ordered Map](../ordered-map/README.md)] | Medium |
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| 715 | [Range 模块](../../problems/range-module) | [[线段树](../segment-tree/README.md)] [[Ordered Map](../ordered-map/README.md)] | Hard |
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| 699 | [掉落的方块](../../problems/falling-squares) | [[线段树](../segment-tree/README.md)] [[Ordered Map](../ordered-map/README.md)] | Hard |
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| 683 | [K 个关闭的灯泡](../../problems/k-empty-slots) 🔒 | [[Ordered Map](../ordered-map/README.md)] | Hard |
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| 352 | [将数据流变为多个不相交区间](../../problems/data-stream-as-disjoint-intervals) | [[二分查找](../binary-search/README.md)] [[Ordered Map](../ordered-map/README.md)] | Hard |
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| 220 | [存在重复元素 III](../../problems/contains-duplicate-iii) | [[排序](../sort/README.md)] [[Ordered Map](../ordered-map/README.md)] | Medium |

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