LeetCode Solution In Hard Way

(Notes: "🔒" means you need to buy a book from Leetcode)

#	Title	Solution	Difficulty
剑指 Offer II 092	将字符串翻转到单调递增	C++	Medium
剑指 Offer II 091	粉刷房子	C++	Medium
剑指 Offer II 090	打家劫舍 II	C++	Medium
剑指 Offer II 089	打家劫舍	C++	Medium
剑指 Offer II 088	使用最小花费爬楼梯	C++	Easy
剑指 Offer II 087	复原 IP 地址	C++	Medium
剑指 Offer II 086	分割回文串	C++	Medium
剑指 Offer II 085	括号生成	C++	Medium
剑指 Offer II 084	全排列 II	C++	Medium
剑指 Offer II 083	全排列	C++	Medium
剑指 Offer II 082	组合总和 II	C++	Medium
剑指 Offer II 081	组合总和	C++	Medium
剑指 Offer II 080	组合	C++	Medium
剑指 Offer II 079	子集	C++	Medium
剑指 Offer II 078	合并 K 个升序链表	C++	Hard
剑指 Offer II 077	排序链表	C++	Medium
剑指 Offer II 076	数组中的第 K 个最大元素	C++	Medium
剑指 Offer II 075	数组的相对排序	C++	Easy
剑指 Offer II 074	合并区间	C++	Medium
剑指 Offer II 073	爱吃香蕉的狒狒	C++	Medium
剑指 Offer II 072	x 的平方根	C++	Easy
剑指 Offer II 071	按权重随机选择	C++	Medium
剑指 Offer II 070	有序数组中的单一元素	C++	Medium
剑指 Offer II 069	山脉数组的峰顶索引	C++	Easy
剑指 Offer II 068	搜索插入位置	C++	Easy
剑指 Offer II 067	数组中两个数的最大异或值	C++	Medium
剑指 Offer II 066	键值映射	C++	Medium
剑指 Offer II 065	单词的压缩编码	C++	Medium
剑指 Offer II 064	实现一个魔法字典	C++	Medium
剑指 Offer II 063	替换单词	C++	Medium
剑指 Offer II 062	实现前缀树	C++	Medium
剑指 Offer II 061	和最小的 k 个数对	C++	Medium
剑指 Offer II 060	出现频率最高的 k 个数字	C++	Medium
剑指 Offer II 059	数据流的第 K 大数值	C++	Easy
剑指 Offer II 058	日程表	C++	Medium
剑指 Offer II 057	值和下标之差都在给定的范围内	C++	Medium
剑指 Offer II 056	二叉搜索树中两个节点之和	C++	Easy
剑指 Offer II 055	二叉搜索树迭代器	C++	Medium
剑指 Offer II 054	所有大于等于节点的值之和	C++	Medium
剑指 Offer II 053	二叉搜索树中的中序后继	C++	Medium
剑指 Offer II 052	展平二叉搜索树	C++	Easy
剑指 Offer II 051	节点之和最大的路径	C++	Hard
剑指 Offer II 050	向下的路径节点之和	C++	Medium
剑指 Offer II 049	从根节点到叶节点的路径数字之和	C++	Medium
剑指 Offer II 048	序列化与反序列化二叉树	C++	Hard
剑指 Offer II 047	二叉树剪枝	C++	Medium
剑指 Offer II 046	二叉树的右侧视图	C++	Medium
剑指 Offer II 045	二叉树最底层最左边的值	C++	Medium
剑指 Offer II 043	往完全二叉树添加节点	C++	Medium
剑指 Offer II 042	最近请求次数	C++	Easy
剑指 Offer II 041	滑动窗口的平均值	C++	Easy
剑指 Offer II 040	矩阵中最大的矩形	C++	Hard
剑指 Offer II 039	直方图最大矩形面积	C++	Hard
剑指 Offer II 038	每日温度	C++	Medium
剑指 Offer II 037	小行星碰撞	C++	Medium
剑指 Offer II 036	后缀表达式	C++	Medium
剑指 Offer II 035	最小时间差	C++	Medium
剑指 Offer II 034	外星语言是否排序	C++	Medium
剑指 Offer II 033	变位词组	C++	Medium
剑指 Offer II 032	有效的变位词	C++	Easy
剑指 Offer II 031	最近最少使用缓存	C++	Medium
剑指 Offer II 030	插入、删除和随机访问都是 O(1) 的容器	C++	Medium
剑指 Offer II 029	排序的循环链表	C++	Medium
剑指 Offer II 028	展平多级双向链表	C++	Medium
剑指 Offer II 027	回文链表	C++	Easy
剑指 Offer II 025	链表中的两数相加	C++	Medium
剑指 Offer II 022	链表中环的入口节点	C++	Medium
剑指 Offer II 021	删除链表的倒数第 n 个结点	C++	Medium
剑指 Offer II 020	回文子字符串的个数	C++	Medium
剑指 Offer II 019	最多删除一个字符得到回文	C++	Easy
剑指 Offer II 018	有效的回文	C++	Easy
剑指 Offer II 017	含有所有字符的最短字符串	C++	Hard
剑指 Offer II 016	不含重复字符的最长子字符串	C++	Medium
剑指 Offer II 015	字符串中的所有变位词	C++	Medium
剑指 Offer II 014	字符串中的变位词	C++	Medium
剑指 Offer II 012	左右两边子数组的和相等	C++	Medium
剑指 Offer II 011	0 和 1 个数相同的子数组	C++	Medium
剑指 Offer II 010	和为 k 的子数组	C++	Medium
剑指 Offer II 009	乘积小于 K 的子数组	C++	Medium
剑指 Offer II 008	和大于等于 target 的最短子数组	C++	Medium
剑指 Offer II 007	数组中和为 0 的三个数	C++	Medium
剑指 Offer II 006	排序数组中两个数字之和	C++	Medium
剑指 Offer II 005	单词长度的最大乘积	C++	Medium
剑指 Offer II 004	只出现一次的数字	C++	Easy
剑指 Offer II 003	前 n 个数字二进制中 1 的个数	C++	Easy
剑指 Offer II 002	二进制加法	C++	Easy
剑指 Offer II 001	整数除法	C++	Easy
剑指 Offer 66	构建乘积数组	C++	Medium
剑指 Offer 65	不用加减乘除做加法	C++	Easy
剑指 Offer 60	n个骰子的点数	C++	Medium
剑指 Offer 57	I. 翻转单词顺序	C++	Easy
剑指 Offer 57	II. 和为s的连续正数序列	C++	Easy
剑指 Offer 57	和为s的两个数字	C++	Easy
剑指 Offer 56	II. 数组中数字出现的次数 II	C++	Medium
剑指 Offer 56	I. 数组中数字出现的次数	C++	Medium
剑指 Offer 55	II. 平衡二叉树	C++	Easy
剑指 Offer 55	I. 二叉树的深度	C++	Easy
剑指 Offer 54	二叉搜索树的第k大节点	C++	Easy
剑指 Offer 53	II. 0～n-1中缺失的数字	C++	Easy
剑指 Offer 53	I. 在排序数组中查找数字 I	C++	Easy
剑指 Offer 52	两个链表的第一个公共节点	C++	Easy
剑指 Offer 51	数组中的逆序对	C++	Hard
剑指 Offer 50	第一个只出现一次的字符	C++	Easy
剑指 Offer 49	丑数	C++	Medium
剑指 Offer 48	最长不含重复字符的子字符串	C++	Medium
剑指 Offer 47	礼物的最大价值	C++	Medium
剑指 Offer 46	把数字翻译成字符串	C++	Medium
剑指 Offer 45	把数组排成最小的数	C++	Medium
剑指 Offer 44	数字序列中某一位的数字	C++	Medium
剑指 Offer 43	1～n 整数中 1 出现的次数	C++	Hard
剑指 Offer 42	连续子数组的最大和	C++	Easy
剑指 Offer 41	数据流中的中位数	C++	Hard
剑指 Offer 40	最小的k个数 LCOF	C++	Easy
剑指 Offer 39	数组中出现次数超过一半的数字	C++	Easy
剑指 Offer 38	字符串的排列	C++	Medium
剑指 Offer 36	二叉搜索树与双向链表	C++	Medium
剑指 Offer 34	二叉树中和为某一值的路径	C++	Medium
剑指 Offer 06	从尾到头打印链表	C++	Easy
剑指 Offer 05	替换空格	C++	Easy
剑指 Offer 04	二维数组中的查找	C++	Medium
剑指 Offer 03	数组中重复的数字	C++	Easy
bytedance-006	夏季特惠	C++	Easy
LCR 132	砍竹子 II	C++	Medium
LCR 119	最长连续序列	C++	Medium
LCR 118	冗余连接	C++	Medium
LCR 117	相似字符串组	C++	Hard
LCR 116	省份数量	C++	Medium
LCR 115	序列重建	C++	Medium
LCR 114	火星词典	C++	Hard
LCR 113	课程表 II	C++	Medium
LCR 112	矩阵中的最长递增路径	C++	Hard
LCR 111	除法求值	C++	Medium
LCR 110	所有可能的路径	C++	Medium
LCR 109	打开转盘锁	C++	Medium
LCR 108	单词接龙	C++	Hard
LCR 107	01 矩阵	C++	Medium
LCR 106	判断二分图	C++	Medium
LCR 105	岛屿的最大面积	C++	Medium
LCR 104	组合总和 Ⅳ	C++	Medium
LCR 103	零钱兑换	C++	Medium
LCR 102	目标和	C++	Medium
LCR 101	分割等和子集	C++	Easy
LCR 100	三角形最小路径和	C++	Medium
LCR 099	最小路径和	C++	Medium
LCR 098	不同路径	C++	Medium
LCR 097	不同的子序列	C++	Hard
LCR 096	交错字符串	C++	Medium
LCR 095	最长公共子序列	C++	Medium
LCR 094	分割回文串 II	C++	Hard
LCR 093	最长的斐波那契子序列的长度	C++	Medium
LCP 74	最强祝福力场	C++	Medium
LCP 61	气温变化趋势	C++	Easy
LCP 41	黑白翻转棋	C++	Medium
LCP 35	电动车游城市	C++	Hard
LCP 30	魔塔游戏	C++	Medium
LCP 10	二叉树任务调度	C++	Hard
LCP 09	最小跳跃次数	C++	Hard
LCP 08	剧情触发时间	C++	Medium
LCP 07	传递信息	C++	Easy
LCP 06	拿硬币	C++	Easy
LCP 04	Broken Board Dominoes	C++	Hard
LCP 03	Programmable Robot	C++	Medium
LCP 02	Deep Dark Fraction	C++	Easy
LCP 01	Guess Numbers	C++	Easy
17.25	Word Rectangle LCCI	C++	Hard
17.24	Max Submatrix LCCI	C++	Hard
17.23	Max Black Square LCCI	C++	Medium
17.22	Word Transformer LCCI	C++	Medium
17.21	Volume of Histogram LCCI	C++	Hard
17.20	Continuous Median LCCI	C++	Hard
17.19	Missing Two LCCI	C++	Hard
17.18	Shortest Supersequence LCCI	C++	Medium
17.16	The Masseuse LCCI	C++	Easy
17.15	Longest Word LCCI	C++	Medium
17.14	Smallest K LCCI	C++	Medium
17.13	Re-Space LCCI	C++	Medium
17.12	BiNode	C++	Easy
17.11	Find Closest LCCI	C++	Medium
17.10	Find Majority Element LCCI	C++	Easy
17.09	Get Kth Magic Number LCCI	C++	Medium
17.08	Circus Tower LCCI	C++	Medium
17.07	Baby Names LCCI	C++	Medium
17.06	Number Of 2s In Range LCCI	C++	Hard
17.05	Find Longest Subarray LCCI	C++	Medium
17.04	Missing Number LCCI	C++	Easy
17.01	Add Without Plus LCCI	C++	Easy
16.26	Calculator LCCI	C++	Medium
16.25	LRU Cache LCCI	C++	Medium
16.24	Pairs With Sum LCCI	C++	Medium
16.22	Langtons Ant LCCI	C++	Medium
16.21	Sum Swap LCCI	C++	Medium
16.20	T9 LCCI	C++	Medium
16.19	Pond Sizes LCCI	C++	Medium
16.18	Pattern Matching LCCI	C++	Medium
16.17	Contiguous Sequence LCCI	C++	Easy
16.16	Sub Sort LCCI	C++	Medium
16.15	Master Mind LCCI	C++	Easy
16.14	Best Line LCCI	C++	Medium
16.13	Bisect Squares LCCI	C++	Medium
16.11	Diving Board LCCI	C++	Easy
16.10	Living People LCCI	C++	Medium
16.09	Operations LCCI	C++	Medium
16.08	English Int LCCI	C++	Hard
16.07	Maximum LCCI	C++	Medium
16.06	Smallest Difference LCCI	C++	Medium
16.05	Factorial Zeros LCCI	C++	Easy
16.04	Tic-Tac-Toe LCCI	C++	Medium
16.03	Intersection LCCI	C++	Hard
16.02	Words Frequency LCCI	C++	Medium
16.01	Swap Numbers LCCI	C++	Medium
10.11	Peaks and Valleys LCCI	C++	Medium
10.10	Rank from Stream LCCI	C++	Medium
10.09	Sorted Matrix Search LCCI	C++	Medium
10.04	Sparse Array Search LCCI	C++	Easy
10.03	Search Rotate Array LCCI	C++	Medium
10.02	Group Anagrams LCCI	C++	Medium
10.01	Sorted Merge LCCI	C++	Easy
08.14	Boolean Evaluation LCCI	C++	Medium
08.13	Pile Box LCCI	C++	Hard
08.12	Eight Queens LCCI	C++	Hard
08.11	Coin LCCI	C++	Medium
08.10	Color Fill LCCI	C++	Easy
08.09	Bracket LCCI	C++	Medium
08.08	Permutation II LCCI	C++	Medium
08.07	Permutation I LCCI	C++	Medium
08.06	Hanota LCCI	C++	Medium
08.05	Recursive Mulitply LCCI	C++	Medium
08.04	Power Set LCCI	C++	Medium
08.03	Magic Index LCCI	C++	Easy
08.02	Robot in a Grid LCCI	C++	Medium
08.01	Three Steps Problem LCCI	C++	Easy
05.08	Draw Line LCCI	C++	Medium
05.07	Exchange LCCI	C++	Easy
05.06	Convert Integer LCCI	C++	Easy
05.04	Closed Number LCCI	C++	Medium
05.03	Reverse Bits LCCI	C++	Easy
05.02	Binary Number to String LCCI	C++	Medium
05.01	Insert Into Bits LCCI	C++	Easy
04.12	Paths with Sum LCCI	C++	Medium
04.10	Check SubTree LCCI	C++	Medium
04.09	BST Sequences LCCI	C++	Hard
04.08	First Common Ancestor LCCI	C++	Medium
04.06	Successor LCCI	C++	Medium
04.05	Legal Binary Search Tree LCCI	C++	Medium
02.02	Kth Node From End of List LCCI	C++	Easy
02.01	Remove Duplicate Node LCCI	C++	Easy
01.09	String Rotation LCCI	C++	Easy
01.08	Zero Matrix LCCI	C++	Medium
01.02	Check Permutation LCCI	C++	Easy
3516	Find Closest Person	C++	Easy
3259	Maximum Energy Boost From Two Drinks	C++	Medium
3226	Number of Bit Changes to Make Two Integers Equal	C++	Easy
3195	Find the Minimum Area to Cover All Ones I	C++	Medium
3191	Minimum Operations to Make Binary Array Elements Equal to One I	C++	Medium
3185	Count Pairs That Form a Complete Day II	C++	Medium
3184	Count Pairs That Form a Complete Day I	C++	Easy
3175	Find The First Player to win K Games in a Row	C++	Medium
3172	Find Subarray With Bitwise OR Closest to K	C++	Hard
3164	Find the Number of Good Pairs II	C++	Medium
3162	Find the Number of Good Pairs I	C++	Easy
3154	Find Number of Ways to Reach the K-th Stair	C++	Medium
3153	Sum of Digit Differences of All Pairs	C++	Medium
3152	Special Array II	C++	Medium
3151	Special Array I	C++	Easy
3148	Maximum Difference Score in a Grid	C++	Medium
3145	Maximum Difference Score in a Grid	C++	Hard
3144	Minimum Substring Partition of Equal Character Frequency	C++	Medium
3142	Check if Grid Satisfies Conditions	C++	Easy
3134	Find the Median of the Uniqueness Array	C++	Hard
3131	Find the Integer Added to Array I	C++	Easy
3117	Minimum Sum of Values by Dividing Array	C++	Hard
3115	Maximum Prime Difference	C++	Medium
3112	Minimum Time to Visit Disappearing Nodes	C++	Medium
3099	Harshad Number	C++	Easy
3098	Find the Sum of Subsequence Powers	C++	Hard
3027	Find the Number of Ways to Place People II	C++	Hard
3007	Maximum Number That Sum of the Prices Is Less Than or Equal to K	C++	Medium
2974	Minimum Number Game	C++	Easy
2970	Count the Number of Incremovable Subarrays I	C++	Easy
2961	Double Modular Exponentiation	C++	Medium
2960	Count Tested Devices After Test Operations	C++	Easy
2959	Number of Possible Sets of Closing Branches	C++	Hard
2951	Find the Peaks	C++	Easy
2926	Maximum Balanced Subsequence Sum	C++	Hard
2923	Find Champion I	C++	Easy
2917	Find the K-or of an Array	C++	Easy
2867	Count Valid Paths in a Tree	C++	Hard
2864	Maximum Odd Binary Number	C++	Easy
2846	Minimum Edge Weight Equilibrium Queries in a Tree	C++	Hard
2836	Maximize Value of Function in a Ball Passing Game	C++	Hard
2834	Find the Minimum Possible Sum of a Beautiful Array	C++	Medium
2828	Check if a String Is an Acronym of Words	C++	Easy
2824	Count Pairs Whose Sum is Less than Target	C++	Easy
2813	Maximum Elegance of a K-Length Subsequence	C++	Hard
2810	Faulty Keyboard	C++	Easy
2806	Account Balance After Rounded Purchase	C++	Easy
2789	Largest Element in an Array after Merge	C++	Hard
2786	Visit Array Positions to Maximize Score	C++	Medium
2769	Find the Maximum Achievable Number	C++	Easy
2766	Relocate Marbles	C++	Medium
2765	Longest Alternating Subarray	C++	Easy
2749	Minimum Operations to Make the Integer Zero	C++	Medium
2748	Number of Beautiful Pairs	C++	Easy
2742	Painting the Walls	C++	Hard
2734	Lexicographically Smallest String After Substring Operation	C++	Medium
2719	Count of Integers	C++	Hard
2713	Maximum Strictly Increasing Cells in a Matrix	C++	Hard
2698	Find the Punishment Number of an Integer	C++	Medium
2681	Power of Heroes	C++	Hard
2679	Sum in a Matrix	C++	Medium
2674	Frequency Tracker	C++	Medium
2673	Make Costs of Paths Equal in a Binary Tree	C++	Medium
2661	First Completely Painted Row or Column	C++	Medium
2651	Calculate Delayed Arrival Time	C++	Easy
2646	Minimize the Total Price of the Trips	C++	Hard
2641	Cousins in Binary Tree II	C++	Medium
2639	Find the Width of Columns of a Grid	C++	Easy
2611	Mice and Cheese	C++	Medium
2609	Find the Longest Balanced Substring of a Binary String	C++	Easy
2605	Form Smallest Number From Two Digit Arrays	C++	Easy
2603	Collect Coins in a Tree	C++	Hard
2600	K Items With the Maximum Sum	C++	Easy
2596	Check Knight Tour Configuration	C++	Medium
2591	Distribute Money to Maximum Children	C++	Easy
2594	Minimum Time to Repair Cars	C++	Medium
2586	Count the Number of Vowel Strings in Range	C++	Easy
2583	Kth Largest Sum in a Binary Tree	C++	Medium
2578	Split With Minimum Sum	C++	Easy
2575	Find the Divisibility Array of a String	C++	Medium
2569	Handling Sum Queries After Update	C++	Hard
2562	Find the Array Concatenation Value	C++	Easy
2560	House Robber IV	C++	Medium
2559	Count Vowel Strings in Ranges	C++	Medium
2551	Put Marbles in Bags	C++	Hard
2544	Alternating Digit Sum	C++	Easy
2532	Time to Cross a Bridge	C++	Hard
2530	Maximal Score After Applying K Operations	C++	Medium
2529	Maximum Count of Positive Integer and Negative Integer	C++	Easy
2520	Count the Digits That Divide a Number	C++	Easy
2517	Maximum Tastiness of Candy Basket	C++	Medium
2512	Reward Top K Students	C++	Medium
2500	Delete Greatest Value in Each Row	C++	Easy
2496	Maximum Value of a String in an Array	C++	Easy
2490	Circular Sentence	C++	Easy
2485	Find the Pivot Integer	C++	Easy
2481	Minimum Cuts to Divide a Circle	C++	Easy
2477	Minimum Fuel Cost to Report to the Capital	C++	Medium
2476	Closest Nodes Queries in a Binary Search Tree	C++	Medium
2475	Number of Unequal Triplets in Array	C++	Easy
2472	Maximum Number of Non-overlapping Palindrome Substrings	C++	Hard
2465	Number of Distinct Averages	C++	Easy
2463	Minimum Total Distance Traveled	C++	Hard
2460	Apply Operations to an Array	C++	Easy
2458	Height of Binary Tree After Subtree Removal Queries	C++	Hard
2455	Average Value of Even Numbers That Are Divisible by Three	C++	Easy
2451	Odd String Difference	C++	Easy
2449	Minimum Number of Operations to Make Arrays Similar	C++	Hard
2437	Number of Valid Clock Times	C++	Easy
2435	Paths in Matrix Whose Sum Is Divisible by K	C++	Hard
2421	Number of Good Paths	C++	Hard
2418	Sort the People	C++	Easy
2409	Count Days Spent Together	C++	Easy
2404	Most Frequent Even Element	C++	Easy
2384	Largest Palindromic Number	C++	Medium
2373	Largest Local Values in a Matrix	C++	Easy
2370	Longest Ideal Subsequence	C++	Medium
2369	Check if There is a Valid Partition For The Array	C++	Medium
2367	Count Special Integers	C++	Hard
2363	Merge Similar Items	C++	Easy
2352	Equal Row and Column Pairs	C++	Medium
2341	Maximum Number of Pairs in Array	C++	Easy
2336	Smallest Number in Infinite Set	C++	Medium
2331	Evaluate Boolean Binary Tree	C++	Easy
2325	Decode the Message	C++	Easy
2322	Minimum Score After Removals on a Tree	C++	Hard
2319	Check if Matrix Is X-Matrix	C++	Easy
2312	Selling Pieces of Wood	C++	Hard
2304	Minimum Path Cost in a Grid	C++	Medium
2300	Successful Pairs of Spells and Potions	C++	Medium
2288	Apply Discount to Prices	C++	Medium
2281	Sum of Total Strength of Wizards	C++	Hard
2280	Minimum Index of a Valid Split	C++	Medium
2276	Count Integers in Intervals	C++	Hard
2258	Number of Flowers in Full Bloom	C++	Hard
2251	Number of Flowers in Full Bloom	C++	Hard
2246	Longest Path With Different Adjacent Characters	C++	Hard
2244	Minimum Rounds to Complete All Tasks	C++	Medium
2240	Number of Ways to Buy Pens and Pencils	C++	Medium
2218	Maximum Value of K Coins From Piles	C++	Hard
2209	Minimum Obstacle Removal to Reach Corner	C++	Hard
2208	Minimum Operations to Halve Array Sum	C++	Medium
2200	Find All K-Distant Indices in an Array	C++	Easy
2193	Minimum Number of Moves to Make Palindrome	C++	Hard
2180	Count Integers With Even Digit Sum	C++	Easy
2178	Maximum Split of Positive Even Integers	C++	Medium
2168	Unique Substrings With Equal Digit Frequency	C++	Medium
2166	Design Bitset	C++	Medium
2141	Maximum Running Time of N Computers	C++	Hard
2138	Divide a String Into Groups of Size k	C++	Easy
2136	Earliest Possible Day of Full Bloom	C++	Medium
2132	Stamping the Grid	C++	Hard
2129	Capitalize the Title	C++	Easy
2127	Maximum Employees to Be Invited to a Meeting	C++	Hard
2111	Minimum Operations to Make the Array K-Increasing	C++	Hard
2106	Maximum Fruits Harvested After at Most K Steps	C++	Hard
2105	Watering Plants II	C++	Medium
2092	Find All People With Secret	C++	Hard
2081	Sum of k-Mirror Numbers	C++	Hard
2079	Watering Plants	C++	Medium
2071	Maximum Number of Tasks You Can Assign	C++	Hard
2065	Maximum Path Quality of a Graph	C++	Hard
2050	Parallel Courses III	C++	Hard
2042	Check if Numbers Are Ascending in a Sentence	C++	Easy
2034	Stock Price Fluctuation	C++	Medium
2016	Maximum Difference Between Increasing Elements	C++	Easy
2011	Final Value of Variable After Performing Operations	C++	Easy
2009	Minimum Number of Operations to Make Array Continuous	C++	Hard
2008	Maximum Earnings From Taxi	C++	Medium
2007	Find Original Array From Doubled Array	C++	Medium
1994	The Number of Good Subsets	C++	Hard
1979	Find Greatest Common Divisor of Array	C++	Easy
1971	Find if Path Exists in Graph	C++	Easy
1945	Sum of Digits of String After Convert	C++	Easy
1931	Painting a Grid With Three Different Colors	C++	Hard
1921	Eliminate Maximum Number of Monsters	C++	Medium
1911	Maximum Alternating Subsequence Sum	C++	Medium
1910	Remove All Occurrences of a Substring	C++	Medium
1851	Minimum Interval to Include Each Query	C++	Hard
1832	Check if the Sentence Is Pangram	C++	Easy
1827	Minimum Operations to Make the Array Increasing	C++	Easy
1822	Sign of the Product of an Array	C++	Easy
1812	Determine Color of a Chessboard Square	C++	Easy
1802	Maximum Value at a Given Index in a Bounded Array	C++	Medium
1805	Number of Different Integers in a String	C++	Easy
1799	Maximize Score After N Operations	C++	Hard
1798	Maximum Number of Consecutive Values You Can Make	C++	Medium
1797	Design Authentication Manager	C++	Medium
1796	Second Largest Digit in a String	C++	Easy
1793	Maximum Score of a Good Subarray	C++	Hard
1792	Maximum Average Pass Ratio	C++	Medium
1790	Check if One String Swap Can Make Strings Equal	C++	Easy
1785	Minimum Elements to Add to Form a Given Sum	C++	Medium
1784	Check if Binary String Has at Most One Segment of Ones	C++	Easy
1781	Sum of Beauty of All Substrings	C++	Medium
1780	Check if Number is a Sum of Powers of Three	C++	Medium
1779	Find Nearest Point That Has the Same X or Y Coordinate	C++	Easy
1775	Equal Sum Arrays With Minimum Number of Operations	C++	Medium
1774	Closest Dessert Cost	C++	Medium
1773	Count Items Matching a Rule	C++	Easy
1769	Minimum Number of Operations to Move All Balls to Each Box	C++	Medium
1768	Merge Strings Alternately	C++	Easy
1764	Form Array by Concatenating Subarrays of Another Array	C++	Medium
1762	Tuple with Same Product	C++	Medium
1761	Minimum Degree of a Connected Trio in a Graph	C++	Hard
1760	Minimum Limit of Balls in a Bag	C++	Medium
1758	Minimum Changes To Make Alternating Binary String	C++	Easy
1755	Closest Subsequence Sum	C++	Hard
1753	Maximum Score From Removing Stones	C++	Medium
1752	Check if Array Is Sorted and Rotated	C++	Easy
1751	Maximum Number of Events That Can Be Attended II	C++	Hard
1749	Maximum Absolute Sum of Any Subarray	C++	Medium
1742	Maximum Number of Balls in a Box	C++	Easy
1732	Find the Highest Altitude	C++	Easy
1710	Maximum Units on a Truck	C++	Easy
1704	Determine if String Halves Are Alike	C++	Easy
1703	Minimum Adjacent Swaps for K Consecutive Ones	C++	Hard
1702	Maximum Binary String After Change	C++	Medium
1700	Number of Students Unable to Eat Lunch	C++	Easy
1697	Checking Existence of Edge Length Limited Paths	C++	Hard
1696	Jump Game VI	C++	Medium
1694	Reformat Phone Number	C++	Easy
1690	Stone Game VII	C++	Medium
1687	Delivering Boxes from Storage to Ports	C++	Hard
1686	Stone Game VI	C++	Medium
1684	Count the Number of Consistent Strings	C++	Easy
1678	Goal Parser Interpretation	C++	Easy
1675	Minimize Deviation in Array	C++	Easy
1669	Merge In Between Linked Lists	C++	Medium
1668	Maximum Repeating Substring	C++	Easy
1662	Check If Two String Arrays are Equivalent	C++	Easy
1659	Maximize Grid Happiness	C++	Hard
1657	Determine if Two Strings Are Close	C++	Medium
1656	Design an Ordered Stream	C++	Easy
1655	Distribute Repeating Integers	C++	Hard
1654	Minimum Jumps to Reach Home	C++	Medium
1652	Defuse the Bomb	C++	Easy
1641	Count Sorted Vowel Strings	C++	Medium
1638	Count Substrings That Differ by One Character	C++	Medium
1637	Widest Vertical Area Between Two Points Containing No Points	C++	Medium
1636	Sort Array by Increasing Frequency	C++	Easy
1631	Path With Minimum Effort	C++	Medium
1630	Arithmetic Subarrays	C++	Medium
1624	Largest Substring Between Two Equal Characters	C++	Easy
1620	Coordinate With Maximum Network Quality	C++	Medium
1619	Mean of Array After Removing Some Elements	C++	Easy
1615	Maximal Network Rank	C++	Medium
1604	Alert Using Same Key-Card Three or More Times in a One Hour Period	C++	Medium
1595	Minimum Cost to Connect Two Groups of Points	C++	Hard
1592	Rearrange Spaces Between Words	C++	Easy
1590	Make Sum Divisible by P	C++	Medium
1582	Special Positions in a Binary Matrix	C++	Easy
1574	Shortest Subarray to be Removed to Make Array Sorted	C++	Medium
1553	Minimum Number of Days to Eat N Oranges	C++	Hard
1552	Magnetic Force Between Two Balls	C++	Medium
1547	Minimum Cost to Cut a Stick	C++	Hard
1521	Find a Value of a Mysterious Function Closest to Target	C++	Hard
1504	Count Submatrices With All Ones	C++	Medium
1499	Max Value of Equation	C++	Hard
1494	Parallel Courses II	C++	Hard
1483	Kth Ancestor of a Tree Node	C++	Hard
1475	Final Prices With a Special Discount in a Shop	C++	Easy
1473	Paint House III	C++	Hard
1470	Shuffle the Array	C++	Easy
1466	Reorder Routes to Make All Paths Lead to the City Zero	C++	Medium
1465	Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts	C++	Message
1464	Maximum Product of Two Elements in an Array	C++	Easy
1463	Cherry Pickup II	C++	Hard
1462	Course Schedule IV	C++	Medium
1460	Make Two Arrays Equal by Reversing Sub-arrays	C++	Easy
1455	Check If a Word Occurs As a Prefix of Any Word in a Sentence	C++	Easy
1450	Number of Students Doing Homework at a Given Time	C++	Easy
1441	Build an Array With Stack Operations	C++	Medium
1438	Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit	C++	Medium
1436	Destination City	C++	Easy
1434	Number of Ways to Wear Different Hats to Each Other	C++	Hard
1432	Max Difference You Can Get From Changing an Integer	C++	medium
1422	Maximum Score After Splitting a String	C++	Easy
1417	Reformat The String	C++	Easy
1413	Minimum Value to Get Positive Step by Step Sum	C++	Easy
1410	HTML Entity Parser	C++	Medium
1401	Circle and Rectangle Overlapping	C++	Medium
1397	Find All Good Strings	C++	Hard
1377	Frog Position After T Seconds	C++	Hard
1375	Number of Times Binary String Is Prefix-Aligned	C++	Medium
1373	Maximum Sum BST in Binary Tree	C++	Hard
1371	Find the Longest Substring Containing Vowels in Even Counts	C++	Medium
1368	Minimum Cost to Make at Least One Valid Path in a Grid	C++	Hard
1367	Linked List in Binary Tree	C++	Medium
1353	Maximum Number of Events That Can Be Attended	C++	Medium
1333	Filter Restaurants by Vegan-Friendly, Price and Distance	C++	Medium
1329	Sort the Matrix Diagonally	C++	Medium
1326	Minimum Number of Taps to Open to Water a Garden	C++	Hard
1312	Minimum Insertion Steps to Make a String Palindrome	C++	Hard
1302	Deepest Leaves Sum	C++	Medium
1282	Group the People Given the Group Size They Belong To	C++	Medium
1267	Count Servers that Communicate	C++	Medium
1262	Greatest Sum Divisible by Three	C++	Medium
1261	Find Elements in a Contaminated Binary Tree	C++	Medium
1254	Number of Closed Islands	C++	Medium
1253	Reconstruct a 2-Row Binary Matrix	C++	Medium
1250	Check If It Is a Good Array	C++	Hard
1238	Circular Permutation in Binary Representation	C++	Medium
1235	Maximum Profit in Job Scheduling	C++	Hard
1234	Replace the Substring for Balanced String	C++	Medium
1224	Maximum Equal Frequency	C++	Hard
1224	Dice Roll Simulation	C++	Hard
1222	Queens That Can Attack the King	C++	Medium
1220	Count Vowels Permutation	C++	Hard
1210	Minimum Moves to Reach Target with Rotations	C++	Hard
1204	Tiling a Rectangle with the Fewest Squares	C++	Hard
1187	Make Array Strictly Increasing	C++	Hard
1186	Maximum Subarray Sum with One Deletion	C++	Medium
1177	Can Make Palindrome from Substring	C++	Medium
1171	Remove Zero Sum Consecutive Nodes from Linked List	C++	Medium
1170	Compare Strings by Frequency of the Smallest Character	C++	Medium
1168	Optimize Water Distribution in a Village	C++	Hard
1167	Minimum Cost To Connect Sticks🔒	C++	Medium
1163	Last Substring in Lexicographical Order	C++	Hard
1162	As Far from Land as Possible	C++	Medium
1157	Online Majority Element In Subarray	C++	Hard
1156	Swap For Longest Repeated Character Substring	C++	Medium
1155	Number of Dice Rolls With Target Sum	C++	Medium
1153	String Transforms Into Another String🔒	C++	Medium
1147	Longest Chunked Palindrome Decomposition	C++	Hard
1146	Snapshot Array	C++	Medium
1145	Binary Tree Coloring Game	C++	Medium
1143	Longest Common Subsequence	C++	Medium
1141	Decrease Elements To Make Array Zigzag	C++	Medium
1140	Stone Game II	C++	Medium
1139	Largest 1-Bordered Square	C++	Medium
1137	N-th Tribonacci Number	C++	Easy
1129	Shortest Path with Alternating Colors	C++	Medium
1125	Smallest Sufficient Team	C++	Hard
1124	Longest Well-Performing Interval	C++	Medium
1123	Remove Sub-Folders from the Filesystem	C++	Medium
1122	Relative Sort Array	C++	Easy
1121	Divide Array Into Increasing Sequences🔒	C++	Medium
1120	Count Vowels Permutation	C++	Hard
1109	Corporate Flight Bookings	C++	Medium
1106	Parsing A Boolean Expression	C++	Hard
1105	Filling Bookcase Shelves	C++	Medium
1092	Shortest Common Supersequence	C++	Hard
1090	Largest Values From Labels	C++	Medium
1080	Insufficient Nodes in Root to Leaf Paths	C++	Medium
1072	Flip Columns For Maximum Number of Equal Rows	C++	Medium
1067	Digit Count In Range	C++	Hard
1061	Lexicographically Smallest Equivalent String	C++	Medium
1053	Previous Permutation With One Swap	C++	Medium
1049	Last Stone Weight II	C++	Medium
1048	Longest String Chain	C++	Medium
1043	Partition Array for Maximum Sum	C++	Medium
1042	Flower Planting With No Adjacent	C++	Medium
1041	Robot Bounded In Circle	C++	Medium
1039	Minimum Score Triangulation of Polygon	C++	Medium
1038	Binary Search Tree to Greater Sum Tree	C++	Medium
1031	Maximum Sum of Two Non-Overlapping Subarrays	C++	Medium
1029	Two City Scheduling	C++	Medium
1028	Recover a Tree From Preorder Traversal	C++	Hard
1026	Maximum Difference Between Node and Ancestor	C++	Medium
1023	Camelcase Matching	C++	Medium
1019	Next Greater Node In Linked List	C++	Medium
1017	Convert to Base -2	C++	Medium
1016	Binary String With Substrings Representing 1 To N	C++	Medium
1015	Smallest Integer Divisible by K	C++	Medium
1012	Numbers With Repeated Digits	C++	Hard
1003	Check If Word Is Valid After Substitutions	C++	Medium
1000	Minimum Cost to Merge Stones	C++	Hard
0998	Maximum Binary Tree II	C++	Medium
0993	Cousins in Binary Tree	C++	Easy
0992	Subarrays with K Different Integers	C++	Hard
0987	Vertical Order Traversal of a Binary Tree	C++	Hard
0983	Minimum Cost For Tickets	C++	Medium
0980	Unique Paths III	C++	Hard
0979	Distribute Coins in Binary Tree	C++	Medium
0975	Odd Even Jump	C++	Hard
0970	Powerful Integers	C++	Medium
0968	Binary Tree Cameras	C++	Hard
0964	Validate Stack Sequences	C++	Medium
0962	Maximum Width Ramp	C++	Medium
0958	Check Completeness of a Binary Tree	C++	Medium
0953	Verifying an Alien Dictionary	C++	Easy
0947	Most Stones Removed with Same Row or Column	C++	Medium
0940	Distinct Subsequences II	C++	Hard
0938	Range Sum of BST	C++	Easy
0936	Stamping The Sequence	C++	Hard
0934	Shortest Bridge	C++	Medium
0933	Number of Recent Calls	C++	Easy
0931	Minimum Falling Path Sum	C++	Medium
0928	Minimize Malware Spread II	C++	Hard
0927	Three Equal Parts	C++	Hard
0926	Flip String to Monotone Increasing	C++	Medium
0924	Minimize Malware Spread	C++	Medium
0922	Sort Array By Parity II	C++	Easy
0921	Minimum Add to Make Parentheses Valid	C++	Medium
0919	Complete Binary Tree Inserter	C++	Medium
0918	Maximum Sum Circular Subarray	C++	Medium
0912	Sort an Array	C++	Medium
0910	Smallest Range II	C++	Medium
0908	Smallest Range I	C++	Easy
0907	Sum of Subarray Minimums	C++	Medium
0906	Super Palindromes	C++	Hard
0904	Fruit Into Baskets	C++	Medium
0903	Valid Permutations for DI Sequence	C++	Hard
0902	Numbers At Most N Given Digit Set	C++	Hard
0901	Online Stock Span	C++	Medium
0897	Increasing Order Search Tree	C++	Easy
0895	Maximum Frequency Stack	C++	Hard
0891	Sum of Subsequence Widths	C++	Hard
0889	Construct Binary Tree from Preorder and Postorder Traversal	C++	Medium
0887	Super Egg Drop	C++	Hard
0886	Possible Bipartition	C++	Medium
0882	Reachable Nodes In Subdivided Graph	C++	Hard
0881	Boats to Save People	C++	Medium
0879	Profitable Schemes	C++	Hard
0878	Nth Magical Number	C++	Hard
0875	Koko Eating Bananas	C++	Medium
0874	Walking Robot Simulation	C++	Medium
0873	Length of Longest Fibonacci Subsequence	C++	Medium
0871	Minimum Number of Refueling Stops	C++	Hard
0870	Advantage Shuffle	C++	Medium
0864	Shortest Path to Get All Keys	C++	Medium
0862	Shortest Subarray with Sum at Least K	C++	Hard
0857	Minimum Cost to Hire K Workers	C++	Hard
0856	Score of Parentheses	C++	Medium
0854	K-Similar Strings	C++	Hard
0852	Peak Index in a Mountain Array	C++	Medium
0851	Loud and Rich	C++	Medium
0850	Rectangle Area II	C++	Hard
0839	Similar String Groups	C++	Hard
0828	Count Unique Characters of All Substrings of a Given String	C++	Hard
0827	Making A Large Island	C++	Hard
0823	Binary Trees With Factors	C++	Medium
0820	Short Encoding of Words	C++	Medium
0817	Linked List Components	C++	Medium
0816	Ambiguous Coordinates	C++	Medium
0814	Binary Tree Pruning	C++	Medium
0813	Largest Sum of Averages	C++	Medium
0811	Subdomain Visit Count	C++	Medium
0809	Expressive Words	C++	Medium
0808	Soup Servings	C++	Medium
0805	Split Array With Same Average	C++	Hard
0803	Bricks Falling When Hit	C++	Hard
0799	Champagne Tower	C++	Medium
0797	All Paths From Source to Target	C++	Medium
0793	Preimage Size of Factorial Zeroes Function	C++	Hard
0792	Number of Matching Subsequences	C++	Medium
0791	Custom Sort String	C++	Medium
0795	Number of Subarrays with Bounded Maximum	C++	Medium
0790	Domino and Tromino Tiling	C++	Medium
0788	Rotated Digits	C++	Medium
0787	Cheapest Flights Within K Stops	C++	Medium
0785	Is Graph Bipartite?	C++	Medium
0784	Letter Case Permutation	C++	Medium
0781	Rabbits in Forest	C++	Medium
0779	K-th Symbol in Grammar	C++	Medium
0778	Swim in Rising Water	C++	Hard
0777	Swap Adjacent in LR String	C++	Medium
0775	Global and Local Inversions	C++	Medium
0772	Basic Calculator III🔒	C++	Hard
0765	Couples Holding Hands	C++	Hard
0764	Largest Plus Sign	C++	Medium
0763	Partition Labels	C++	Medium
0761	Special Binary String	C++	Hard
0754	Reach a Number	C++	Medium
0752	Open the Lock	C++	Medium
0746	Min Cost Climbing Stairs	C++	Easy
0743	Network Delay Time	C++	Hard
0741	Cherry Pickup	C++	Hard
0739	Daily Temperatures	C++	Medium
0735	Asteroid Collision	C++	Medium
0730	Count Different Palindromic Subsequences	C++	Hard
0729	My Calendar I	C++	Medium
0726	Number of Atoms	C++	Hard
0724	Find Pivot Index	C++	Easy
0722	Remove Comments	C++	Medium
0719	Find K-th Smallest Pair Distance	C++	Hard
0718	Maximum Length of Repeated Subarray	C++	Medium
0714	Best Time to Buy and Sell Stock with Transaction Fee	C++	Medium
0711	Jewels and Stones	C++	Easy
0708	Insert into a Sorted Circular Linked List	C++	Medium
0707	Design Linked List	C++	Medium
0706	Design HashMap	C++	Easy
0703	Kth Largest Element in a Stream	C++	Easy
0699	Falling Squares	C++	Hard
0698	Partition to K Equal Sum Subsets	C++	Medium
0695	Max Area of Island	C++	Medium
0691	Stickers to Spell Word	C++	Hard
0690	Employee Importance	C++	Medium
0689	Maximum Sum of 3 Non-Overlapping Subarrays	C++	Hard
0688	Knight Probability in Chessboard	C++	Medium
0687	Longest Univalue Path	C++	Medium
0686	Repeated String Match	C++	Medium
0684	Redundant Connection	C++	Medium
0680	Valid Palindrome II	C++	Easy
0677	Map Sum Pairs	C++	Medium
0676	Implement Magic Dictionary	C++	Medium
0673	Number of Longest Increasing Subsequence	C++	Medium
0672	Bulb Switcher II	C++	Medium
0670	Maximum Swap	C++	Medium
0669	Trim a Binary Search Tree	C++	Medium
0664	Strange Printer	C++	Hard
0662	Maximum Width of Binary Tree	C++	Medium
0658	Find K Closest Elements	C++	Medium
0655	Print Binary Tree	C++	Medium
0654	Maximum Binary Tree	C++	Medium
0653	Two Sum IV - Input is a BST	C++	Easy
0652	Find Duplicate Subtrees	C++	Medium
0651	4 Keys Keyboard	C++	Medium
0648	Replace Words	C++	Medium
0647	Palindromic Substrings	C++	Medium
0646	Maximum Length of Pair Chain	C++	Medium
0641	Design Circular Deque	C++	Medium
0640	Solve the Equation	C++	Medium
0639	Decode Ways II	C++	Hard
0633	Sum of Square Numbers	C++	Medium
0632	Smallest Range Covering Elements from K Lists	C++	Hard
0630	Course Schedule III	C++	Hard
0629	K Inverse Pairs Array	C++	Hard
0621	Task Scheduler	C++	Medium
0617	Merge Two Binary Trees	C++	Easy
0605	Can Place Flowers	C++	Easy
0600	Non-negative Integers without Consecutive Ones	C++	Hard
0590	N-ary Tree Postorder Traversal	C++	Easy
0581	Shortest Unsorted Continuous Subarray	C++	Medium
0572	Subtree of Another Tree	C++	Easy
0567	Permutation in String	C++	Medium
0560	Subarray Sum Equals K	C++	Medium
0557	Reverse Words in a String III	C++	Easy
0552	Student Attendance Record II	C++	Hard
0551	Student Attendance Record I	C++	Easy
0547	Number of Provinces	C++	Medium
0546	Remove Boxes	C++	Hard
0543	Diameter of Binary Tree	C++	Easy
0542	01 Matrix	C++	Medium
0540	Single Element in a Sorted Array	C++	Medium
0539	Minimum Time Difference	C++	Medium
0538	Convert BST to Greater Tree	C++	Medium
0529	Minesweeper	C++	Medium
0528	Random Pick with Weight	C++	Medium
0525	Contiguous Array	C++	Medium
0522	Longest Uncommon Subsequence II	C++	Medium
0518	Coin Change II	C++	Medium
0517	Super Washing Machines	C++	Hard
0516	Longest Palindromic Subsequence	C++	Medium
0514	Freedom Trail	C++	Hard
0509	Fibonacci Number	C++	Easy
0502	IPO	C++	Hard
0486	Predict the Winner	C++	Medium
0481	Magical String	C++	Medium
0480	Sliding Window Median	C++	Hard
0494	Target Sum	C++	Medium
0493	Reverse Pairs	C++	Hard
0475	Heaters	C++	Medium
0474	Ones and Zeroes	C++	Medium
0473	Matchsticks to Square	C++	Medium
0467	Unique Substrings in Wraparound String	C++	Medium
0465	Optimal Account Balancing🔒	C++	Hard
0464	Can I Win	C++	Medium
0461	Hamming Distance	C++	Easy
0460	LFU Cache	C++	Hard
0455	Assign Cookies	C++	Easy
0454	4Sum II	C++	Medium
0449	Serialize and Deserialize BST	C++	Medium
0448	Find All Numbers Disappeared in an Array	C++	Easy
0447	Number of Boomerangs	C++	Medium
0446	Count The Repetitions	C++	Hard
0445	Add Two Numbers II	C++	Medium
0444	Sequence Reconstruction	C++	Medium
0438	Find All Anagrams in a String	C++	Medium
0437	Path Sum III	C++	Medium
0436	Find Right Interval	C++	Medium
0432	All O`one Data Structure	C++	Hard
0430	Flatten a Multilevel Doubly Linked List	C++	Medium
0429	N-ary Tree Level Order Traversal	C++	Medium
0421	Maximum XOR of Two Numbers in an Array	C++	Medium
0419	Battleships in a Board	C++	Medium
0416	Partition Equal Subset Sum	C++	Medium
0415	Add Strings	C++	Easy
0412	Fizz Buzz	C++	Easy
0410	Split Array Largest Sum	C++	Hard
0409	Longest Palindrome	C++	Easy
0407	Trapping Rain Water II	C++	Hard
0406	Queue Reconstruction by Height	C++	Medium
0402	Remove K Digits	C++	Medium
0400	Nth Digit	C++	Medium
0399	Evaluate Division	C++	Medium
0395	Longest Substring with At Least K Repeating Characters	C++	Medium
0394	Decode String	C++	Medium
0387	First Unique Character in a String	C++	Easy
0386	Lexicographical Numbers	C++	Medium
0384	Shuffle an Array	C++	Medium
0381	Insert Delete GetRandom O(1) - Duplicates allowed	C++	Hard
0380	Insert Delete GetRandom O(1)	C++	Medium
0378	Kth Smallest Element in a Sorted Matrix	C++	Medium
0377	Combination Sum IV	C++	Medium
0373	Find K Pairs with Smallest Sums	C++	Medium
0371	Sum of Two Integers	C++	Medium
0357	Count Numbers with Unique Digits	C++	Medium
0354	Russian Doll Envelopes	C++	Hard
0350	Intersection of Two Arrays II	C++	Easy
0349	Intersection of Two Arrays	C++	Easy
0348	Design Tic-Tac-Toe	C++	Medium
0347	Top K Frequent Elements	C++	Medium
0346	Moving Average from Data Stream	C++	Easy
0344	Reverse String	C++	Easy
0343	Integer Break	C++	Medium
0341	Flatten Nested List Iterator	C++	Medium
0340	Longest Substring with At Most K Distinct Characters	C++	Medium
0338	Counting Bits	C++	Easy
0337	House Robber III	C++	Medium
0334	Increasing Triplet Subsequence	C++	Medium
0333	Largest BST Subtree🔒	C++	Medium
0329	Longest Increasing Path in a Matrix	C++	Hard
0328	Odd Even Linked List	C++	Medium
0327	Count of Range Sum	C++	Hard
0326	Power of Three	C++	Easy
0324	Wiggle Sort II	C++	Medium
0322	Coin Change	C++	Medium
0321	Create Maximum Number	C++	Hard
0318	Maximum Product of Word Lengths	C++	Medium
0316	Remove Duplicate Letters	C++	Medium
0315	Count of Smaller Numbers After Self	C++	Hard
0312	Burst Balloons	C++	Hard
0310	Minimum Height Trees	C++	Medium
0309	Best Time to Buy and Sell Stock with Cooldown	C++	Medium
0308	Range Sum Query 2D - Mutable🔒	C++	Hard
0307	Range Sum Query - Mutable	C++	Medium
0304	Range Sum Query 2D - Immutable	C++	Medium
0303	Range Sum Query - Immutable	C++	Easy
0301	Remove Invalid Parentheses	C++	Hard
0300	Longest Increasing Subsequence	C++	Medium
0299	Bulls and Cows	C++	Medium
0297	Serialize and Deserialize Binary Tree	C++	Hard
0295	Find Median from Data Stream	C++	Hard
0292	Nim Game	C++	Easy
0289	Game of Life	C++	Medium
0287	Find the Duplicate Number	C++	Medium
0285	Inorder Successor in BST	C++	Medium
0283	Move Zeroes	C++	Easy
0279	Perfect Squares	C++	Medium
0277	Find the Celebrity	C++	Medium
0275	H-Index II	C++	Medium
0269	Alien Dictionary	C++	Hard
0268	Missing Number	C++	Easy
0264	Ugly Number II	C++	Medium
0260	Single Number III	C++	Medium
0256	Paint House🔒	C++	Medium
0253	Meeting Rooms II🔒	C++	Medium
0251	Flatten 2D Vector	C++	Medium
0242	Valid Anagram	C++	Easy
0240	Search a 2D Matrix II	C++	Medium
0239	Sliding Window Maximum	C++	Hard
0238	Product of Array Except Self	C++	Medium
0237	Delete Node in a Linked List	C++	Medium
0236	Lowest Common Ancestor of a Binary Tree	C++	Medium
0235	Lowest Common Ancestor of a Binary Search Tree	C++	Medium
0234	Palindrome Linked List	C++	Easy
0233	Number of Digit One	C++	Hard
0232	Implement Queue using Stacks	C++	Easy
0231	Power of Two	C++	Easy
0230	Kth Smallest Element in a BST	C++	Medium
0229	Majority Element II	C++	Medium
0227	Basic Calculator II	C++	Medium
0226	Invert Binary Tree	C++	Easy
0222	Count Complete Tree Nodes	C++	Easy
0221	Maximal Square	C++	Medium
0220	Contains Duplicate III	C++	Hard
0219	Contains Duplicate II	C++	Easy
0218	The Skyline Problem	C++	Hard
0217	Contains Duplicate	C++	Easy
0215	Kth Largest Element in an Array	C++	Medium
0213	House Robber II	C++	Medium
0212	Word Search II	C++	Hard
0210	Course Schedule II	C++	Medium
0209	Minimum Size Subarray Sum	C++	Medium
0208	Implement Trie (Prefix Tree)	C++	Medium
0207	Course Schedule	C++	Medium
0206	Reverse Linked List	C++	Easy
0205	Isomorphic Strings	C++	Easy
0204	Count Primes	C++	Medium
0202	Happy Number	C++	Easy
0201	Bitwise AND of Numbers Range	C++	Medium
0200	Number of Islands	C++	Medium
0199	Binary Tree Right Side View	C++	Medium
0198	House Robber	C++	Medium
0191	Number of 1 Bits	C++	Easy
0190	Reverse Bits	C++	Easy
0189	Rotate Array	C++	Medium
0188	Best Time to Buy and Sell Stock IV	C++	Hard
0179	Largest Number	C++	Medium
0173	Binary Search Tree Iterator	C++	Medium
0172	Factorial Trailing Zeroes	C++	Medium
0171	Excel Sheet Column Number	C++	Easy
0169	Majority Element	C++	Easy
0167	Two Sum II - Input Array Is Sorted	C++	Medium
0166	Fraction to Recurring Decimal	C++	Medium
0165	Compare Version Numbers	C++	Medium
0163	Missing Ranges	C++	Easy
0162	Find Peak Element	C++	Medium
0160	Intersection of Two Linked Lists	C++	Easy
0155	Min Stack	C++	Medium
0154	Find Minimum in Rotated Sorted Array II	C++	Hard
0153	Find Minimum in Rotated Sorted Array	C++	Medium
0152	Maximum Product Subarray	C++	Medium
0150	Max Points on a Line	C++	Medium
0149	Max Points on a Line	C++	Hard
0148	Sort List	C++	Medium
0146	LRU Cache	C++	Medium
0145	Binary Tree Postorder Traversal	C++	Easy
0144	Binary Tree Preorder Traversal	C++	Easy
0143	Reorder List	C++	Medium
0142	Linked List Cycle II	C++	Medium
0141	Linked List Cycle	C++	Easy
0140	Word Break II	C++	Hard
0139	Word Break	C++	Medium
0138	Copy List with Random Pointer	C++	Medium
0136	Single Number	C++	Easy
0134	Gas Station	C++	Medium
0133	Clone Graph	C++	Medium
0132	Palindrome Partitioning II	C++	Hard
0131	Palindrome Partitioning	C++	Medium
0130	Surrounded Regions	C++	Medium
0129	Sum Root to Leaf Numbers	C++	Medium
0128	Longest Consecutive Sequence	C++	Medium
0127	Word Ladder	C++	Hard
0126	Word Ladder II	C++	Hard
0125	Valid Palindrome	C++	Easy
0124	Binary Tree Maximum Path Sum	C++	Hard
0123	Best Time to Buy and Sell Stock III	C++	Hard
0122	Best Time to Buy and Sell Stock II	C++	Medium
0121	Best Time to Buy and Sell Stock	C++	Easy
0120	Triangle	C++	Medium
0118	Pascal's Triangle	C++	Easy
0116	Populating Next Right Pointers in Each Node	C++	Medium
0115	Distinct Subsequences	C++	Hard
0114	Flatten Binary Tree to Linked List	C++	Medium
0113	Path Sum II	C++	Medium
0111	Minimum Depth of Binary Tree	C++	Easy
0110	Balanced Binary Tree	C++	Easy
0108	Convert Sorted Array to Binary Search Tree	C++	Easy
0106	Construct Binary Tree from Inorder and Postorder Traversal	C++	Medium
0105	Construct Binary Tree from Preorder and Inorder Traversal	C++	Medium
0104	Maximum Depth of Binary Tree	C++	Easy
0103	Binary Tree Zigzag Level Order Traversal	C++	Medium
0102	Binary Tree Level Order Traversal	C++	Medium
0101	Symmetric Tree	C++	Easy
0098	Validate Binary Search Tree	C++	Medium
0097	Interleaving String	C++	Medium
0096	Unique Binary Search Trees	C++	Medium
0094	Binary Tree Inorder Traversal	C++	Easy
0093	Restore IP Addresses	C++	Medium
0092	Reverse Linked List II	C++	Medium
0091	Decode Ways	C++	Medium
0090	Subsets II	C++	Medium
0089	Gray Code	C++	Medium
0088	Merge Sorted Array	C++	Easy
0087	Scramble String	C++	Hard
0085	Maximal Rectangle	C++	Hard
0084	Largest Rectangle in Histogram	C++	Hard
0081	Search in Rotated Sorted Array II	C++	Medium
0080	Remove Duplicates from Sorted Array II	C++	Medium
0079	Word Search	C++	Medium
0078	Subsets	C++	Medium
0077	Combinations	C++	Medium
0076	Minimum Window Substring	C++	Hard
0075	Sort Colors	C++	Medium
0074	Search a 2D Matrix	C++	Medium
0073	Set Matrix Zeroes	C++	Medium
0072	Edit Distance	C++	Hard
0070	Climbing Stairs	C++	Easy
0069	Sqrt(x)	C++	Easy
0067	Add Binary	C++	Easy
0066	Plus One	C++	Easy
0064	Minimum Path Sum	C++	Medium
0062	Unique Paths	C++	Medium
0061	Rotate List	C++	Medium
0060	Permutation Sequence	C++	Hard
0059	Spiral Matrix II	C++	Medium
0058	Length of Last Word	C++	Easy
0057	Insert Interval	C++	Medium
0056	Merge Intervals	C++	Medium
0055	Jump Game	C++	Medium
0054	Spiral Matrix	C++	Medium
0053	Maximum Subarray	C++	Medium
0052	N-Queens II	C++	Hard
0050	Pow(x, n)	C++	Medium
0049	Group Anagrams	C++	Medium
0048	Rotate Image	C++	Medium
0047	Permutations II	C++	Medium
0046	Permutations	C++	Medium
0045	Jump Game II	C++	Medium
0044	Wildcard Matching	C++	Hard
0043	Multiply Strings	C++	Medium
0042	Trapping Rain Water	C++	Hard
0041	First Missing Positive	C++	Hard
0040	Combination Sum II	C++	Medium
0039	Combination Sum	C++	Medium
0038	Count and Say	C++	Medium
0037	Sudoku Solver	C++	Hard
0036	Valid Sudoku	C++	Medium
0035	Search Insert Position	C++	Easy
0034	Find First and Last Position of Element in Sorted Array	C++	Medium
0033	Search in Rotated Sorted Array	C++	Medium
0031	Next Permutation	C++	Medium
0030	Substring with Concatenation of All Words	C++	Hard
0032	Longest Valid Parentheses	C++	Hard
0029	Divide Two Integers	C++	Medium
0028	Find the Index of the First Occurrence in a String	C++	Easy
0026	Remove Duplicates from Sorted Array	C++	Easy
0025	Reverse Nodes in k-Group	C++	Hard
0023	Merge k Sorted Lists	C++	Hard
0022	Generate Parentheses	C++	Medium
0021	Merge Two Sorted Lists	C++	Easy
0020	Valid Parentheses	C++	Easy
0019	Remove Nth Node From End of List	C++	Medium
0017	Letter Combinations of a Phone Number	C++	Medium
0016	3Sum Closest	C++	Medium
0015	3Sum	C++	Medium
0014	Longest Common Prefix	C++	Easy
0013	Roman to Integer	C++	Easy
0012	Integer to Roman	C++	Medium
0011	Container With Most Water	C++	Medium
0010	Regular Expression Matching	C++	Hard
0009	Palindrome Number	C++	Easy
0008	String to Integer (atoi)	C++	Medium
0007	Reverse Integer	C++	Medium
0005	Longest Palindromic Substring	C++	Medium
0004	Median of Two Sorted Arrays	C++	Hard
0003	Longest Substring Without Repeating Characters	C++	Medium
0002	Add Two Numbers	C++	Medium
0001	Two Sum	C++	Easy