MAANG Interview Questions

Meta, Amazon, Apple, Netflix, and Google (MAANG) are some of the biggest tech companies in the world.

A job at MAANG comes with global acknowledgment, huge opportunities for growth and exposure, hefty salary packages, and perks. Due to these excellent career opportunities, MAANG companies tempt all career-seekers.

To ace MAANG interviews, a well-defined preparation strategy is essential. And as the trendsetters of the high-tech world, it is crucial to have a sound knowledge of basic programming fundamentals. Recruiters at MAANG seek only the highly-skilled candidate.

The interview is one of the most grueling phases of a job seeker’s life. In fact, the interview process at Facebook, Apple, Amazon, Netflix, and Google, among many other top tech companies, is unlike anything that job seekers have ever experienced. Not only are the applications notoriously difficult, but their interviews are wild.

The most coveted career goals of all tech graduates are to get a job at FAANG (Facebook, Amazon, Apple, Netflix & Google) companies. This is mainly because their work culture is quite balanced and directed towards maximum productivity. Along with that their career growth options and trajectory are fascinating and the astounding salary just adds a cherry on top of the icing.

You can practice the below MAANG Interview Questions for the interview. We have collected past MAANG Interview Questions for your reference.

Top maang interview questions

S.No	Interview Question	Number of times asked
1	Two Sum Leetcode Solution	43198
2	Maximum occurring character in a string	19590
3	Plus One Leetcode Solution	18977
4	Valid Parentheses LeetCode Solution	18927
5	3Sum Leetcode Solution	16866
6	Merge Sorted Arrays Leetcode Solution	14995
7	First Repeating Element	14992
8	Single Number Leetcode Solution	14676
9	Count Primes Leetcode Solutions	14436
10	Pow(x, n) Leetcode Solution	14040
11	Sqrt(x) Leetcode Solution	13872
12	Meeting Rooms II LeetCode Solution	13012
13	Concatenation of Array LeetCode Solution	12599
14	Roman to Integer Leetcode Solution	11761
15	Valid Palindrome Leetcode Solution	11656
16	Contains Duplicate II Leetcode Solution	11596
17	Search Insert Position Leetcode Solution	11592
18	Palindrome Number LeetCode Solution	11408
19	Remove Duplicates from Sorted Array Leetcode Solution	11171
20	Jump Game Leetcode Solution	11027
21	Reverse Vowels of a String Leetcode Solution	10993
22	Intersection of Two Arrays II Leetcode Solution	10887
23	Longest Substring Without Repeating Characters LeetCode Solution	10788
24	Number of Good Pairs Leetcode Solution	10749
25	Spiral Matrix LeetCode Solution	10667
26	Kids With the Greatest Number of Candies Leetcode Solution	10636
27	House Robber Leetcode Solution	10527
28	Add Binary Leetcode Solution	10455
29	Maximum Subarray Leetcode Solution	10091
30	Number Of 1 bits	9882
31	Find the Maximum Repeating Number in Array	9831
32	Text Justification LeetCode Solution	9682
33	Jewels and Stones Leetcode Solution	9592
34	Move Zeroes LeetCode Solution	9557
35	Min Stack Leetcode Solution	9440
36	Power of Two Leetcode Solution	9419
37	Longest Palindromic Substring LeetCode Solution	9379
38	Permutations Leetcode Solution	9234
39	Shuffle String Leetcode Solution	9233
40	Third Maximum Number Leetcode Solution	9128
41	Word Search Leetcode Solution	9090
42	Find All Numbers Disappeared in an Array Leetcode Solution	9062
43	Daily Temperatures Leetcode Solution	9036
44	Next Permutation Leetcode Solution	9027
45	Median of Two Sorted Arrays LeetCode Solution	8986
46	Evaluation of Postfix Expression	8958
47	Search in Rotated Sorted Array Leetcode Solution	8946
48	Number of Islands LeetCode Solution	8882
49	Kth Missing Positive Number Leetcode Solution	8828
50	Maximum Profit in Job Scheduling Leetcode Solution	8810
51	Longest Common Prefix Leetcode Solution	8805
52	Next Greater Element I Leetcode Solution	8724
53	Frog Jump Leetcode Solution	8611
54	Find Minimum Distance Between Two Numbers in an Array	8472
55	Valid Anagram Leetcode Solution	8421
56	Running Sum of 1d Array Leetcode Solution	8383
57	Rotate Image LeetCode Solution	8374
58	Multiply Strings Leetcode Solution	8331
59	Shuffle the Array Leetcode Solution	8323
60	Can Place Flowers LeetCode Solution	8272
61	Combination Sum Leetcode Solution	8265
62	Count and Say Leetcode Solution	8228
63	House Robber II Leetcode Solution	8220
64	3Sum Closest LeetCode Solution	8193
65	Bulb Switcher LeetCode Solution	8168
66	Excel Sheet Column Title Leetcode Solution	7970
67	Koko Eating Bananas Leetcode Solution	7936
68	Isomorphic Strings Leetcode Solution	7905
69	Happy Number Leetcode Solution	7904
70	Best Time to Buy and Sell Stock LeetCode Solution	7896
71	Subarray and Subsequence	7891
72	Majority Element Leetcode Solution	7796
73	Count Pairs With Given Sum	7792
74	Integer to Roman Leetcode Solution	7781
75	Missing Number Leetcode Solution	7765
76	Product of array except self	7733
77	Strobogrammatic Number LeetCode Solution	7688
78	Rotate String LeetCode Solution	7673
79	Candy LeetCode Solution	7663
80	Reverse String Without Temporary Variable	7595
81	Is Subsequence Leetcode Solution	7542
82	Find the Difference Leetcode Solution	7502
83	A Product Array Puzzle	7486
84	Find the Duplicate Number LeetCode Solution	7462
85	Largest Number Leetcode Solution	7448
86	Find Common Characters Leetcode Solution	7423
87	Expression Evaluation	7422
88	Binary Search LeetCode Solution	7416
89	Subtract the Product and Sum of Digits of an Integer Leetcode Solution	7357
90	String to Integer (atoi) LeetCode Solution	7281
91	How Many Numbers Are Smaller Than the Current Number Leetcode Solution	7274
92	Subset Leetcode	7216
93	Set Matrix Zeroes	7177
94	Summary Ranges Leetcode Solution	7162
95	Sort Characters By Frequency LeetCode Solution	7105
96	Rabin Karp Algorithm	7092
97	Word Pattern LeetCode Solution	7084
98	Balanced Binary Tree Leetcode Solution	7063
99	Find the Town Judge Leetcode Solution	7057
100	Arranging Coins Leetcode Solution	6995
101	Unique Paths Leetcode Solution	6991
102	Find the Winner of the Circular Game LeetCode Solution	6979
103	String Compression LeetCode Solution	6889
104	Rearrange Positive and Negative Numbers Alternatively in Array	6880
105	Asteroid Collision LeetCode Solution	6833
106	Repeated Substring Pattern LeetCode Solution	6788
107	Group Anagrams LeetCode Solution	6783
108	Smallest window in a string containing all characters of another string	6739
109	Sort Colors LeetCode Solution	6711
110	Page Replacement Algorithms in Operating Systems	6709
111	Postfix to Infix Conversion	6690
112	Matrix Chain Multiplication using Dynamic Programming	6650
113	Best Time to Buy and Sell Stock II Leetcode Solution	6637
114	Sort Array By Parity LeetCode Solution	6576
115	Zigzag Conversion LeetCode Solution	6538
116	Divide Two Integers Leetcode Solution	6503
117	Valid Palindrome II Leetcode Solution	6482
118	Kth largest element in an Array Leetcode Solutions	6460
119	Sum of minimum and maximum elements of all subarrays of size k	6454
120	Generate Parentheses Leetcode Solution	6449
121	Reverse Integer Leetcode Solution	6383
122	Remove Duplicates from Sorted Array II Leetcode Solution	6365
123	Assign Cookies Leetcode Solution	6361
124	Product of Array Except Self LeetCode Solution	6346
125	Length of Last Word Leetcode Solution	6300
126	Bus Routes Leetcode Solution	6281
127	Decode String Leetcode Solution	6267
128	Merge Two Sorted Lists Leetcode Solutions	6248
129	Number of Provinces Leetcode Solution	6238
130	Pascal Triangle Leetcode	6238
131	H-Index Leetcode Solution	6232
132	Find the Row with Maximum Number of 1’s	6188
133	Linked List Cycle II LeetCode Solution	6175
134	Convert array into Zig-Zag fashion	6147
135	Minimum Cost For Tickets Leetcode Solution	6141
136	Minimum Steps to reach target by a Knight	6134
137	Defanging an IP Address Leetcode Solution	6110
138	Optimal Account Balancing LeetCode Solution	6106
139	Employee Free Time LeetCode Solution	6094
140	Prefix to Infix Conversion	6069
141	Pascal’s Triangle II Leetcode Solution	5995
142	First element occurring k times in an array	5969
143	Find First and Last Position of Element in Sorted Array Leetcode Solution	5961
144	Increasing Triplet Subsequence LeetCode Solution	5947
145	Build Array From Permutation Leetcode Solution	5933
146	Implementation of Deque using Doubly Linked List	5889
147	Merge Sorted Array LeetCode Solution	5883
148	Majority Element II Leetcode Solution	5874
149	Robot Room Cleaner Leetcode Solution	5861
150	Island Perimeter Leetcode Solution	5840
151	Bellman Ford Algorithm	5831
152	Max Consecutive Ones Leetcode Solution	5790
153	Find Pair with Given Difference	5778
154	Swap Nodes in Pairs Leetcode Solutions	5767
155	Check if the Elements of an Array are Consecutive	5754
156	K-th Smallest Element in a Sorted Matrix	5734
157	OSI Model	5731
158	Guess Number Higher or Lower LeetCode Solution	5724
159	Add Two Numbers II Leetcode Solution	5698
160	Fibonacci Number LeetCode Solution	5696
161	Set Matrix Zeroes Leetcode Solution	5673
162	KMP Algorithm	5673
163	First negative integer in every window of size k	5666
164	Find the Missing Number	5657
165	Subarray Sum Equals K LeetCode Solution	5651
166	Design Parking System Leetcode Solution	5647
167	Lemonade Change Leetcode Solution	5641
168	Trapping Rain Water Leetcode Solution	5632
169	Delete middle element of a stack	5619
170	First Unique Character in a String LeetCode Solution	5592
171	Coin Change 2 Leetcode Solution	5577
172	Word Ladder LeetCode Solution	5573
173	Subarray Product Less Than K LeetCode Solution	5566
174	Find All Duplicates in an Array LeetCode Solution	5558
175	String Compression	5554
176	Length of the largest subarray with contiguous elements	5544
177	Monotonic Array LeetCode Solution	5534
178	Capacity To Ship Packages Within D Days Leetcode Solution	5533
179	Last Stone Weight	5529
180	Palindrome Linked List Leetcode Solution	5516
181	Subarray with Given Sum	5499
182	Find Smallest Missing Number in a Sorted Array	5454
183	Repeated Substring Pattern	5444
184	Form Minimum Number from Given Sequence of D’s and I’s	5438
185	Combinations Leetcode Solution	5415
186	Remove Duplicates from Sorted List II LeetCode Solution	5407
187	01 Matrix LeetCode Solution	5390
188	Single Element in a Sorted Array LeetCode Solution	5377
189	Prefix to Postfix Conversion	5346
190	Reverse Words in a String III LeetCode Solution	5342
191	Valid Perfect Square Leetcode Solution	5336
192	Continuous Subarray Sum LeetCode Solution	5330
193	Same Tree LeetCode Solution	5311
194	Iterative Implementation of Quick Sort	5302
195	Combination Sum	5274
196	Break a Palindrome LeetCode Solution	5269
197	Merge k Sorted Lists Leetcode Solution	5244
198	Remove Linked List Elements Leetcode Solution	5232
199	Slowest Key Leetcode Solution	5220
200	Leetcode Permutations	5217
201	Relative Ranks Leetcode Solution	5200
202	Backspace String Compare	5190
203	Top K Frequent Elements LeetCode Solution	5156
204	Rotate List Leetcode Solution	5148
205	Maximum Product of Three Numbers LeetCode Solution	5145
206	Insert Delete GetRandom O(1) Leetcode Solution	5130
207	Find the Duplicate Element	5111
208	Find Peak Element LeetCode Solution	5109
209	The K Weakest Rows in a Matrix Leetcode Solution	5100
210	Container With Most Water LeetCode Solution	5090
211	Printing brackets in Matrix Chain Multiplication Problem	5057
212	Longest Common Subsequence LeetCode Solution	5038
213	Cuckoo sequence program	5031
214	Contains Duplicate LeetCode Solution	5029
215	Second Most Repeated Word in a Sequence	5018
216	Kth Largest Element in a Stream Leetcode Solution	5016
217	Palindrome Number	5000
218	Remove All Occurrences of a Substring LeetCode Solution	4980
219	Make The String Great Leetcode Solution	4968
220	Relative Sort Array Leetcode Solution	4961
221	Subarray Sum Equals k	4961
222	Permutation in String Leetcode Solution	4958
223	Rearrange given Array in Maximum Minimum Form	4951
224	Max Area of Island	4944
225	Unique Paths II Leetcode Solution	4938
226	Convert a Number to Hexadecimal Leetcode Solution	4916
227	Generate all Binary Strings Without Consecutive 1’s	4909
228	Delete Node in a Linked List Leetcode Solution	4898
229	Find Leaders in an Array	4896
230	Arithmetic Expression Evaluation	4895
231	Target Sum	4880
232	Check If Two String Arrays are Equivalent Leetcode Solution	4866
233	Construct Binary Tree from Given Inorder and Preorder Traversals	4860
234	Time Based Key-Value Store LeetCode Solution	4853
235	N-Queens LeetCode Solution	4851
236	Moving Average from Data Stream Leetcode Solution	4835
237	Scramble String	4832
238	Number of Dice Rolls With Target Sum LeetCode Solution	4814
239	Count Good Nodes in Binary Tree Leetcode Solution	4814
240	Letter Combinations of a Phone Number	4801
241	Next Permutation	4800
242	LRU Cache LeetCode Solution	4798
243	Given two unsorted arrays find all pairs whose sum is x	4783
244	Find N Unique Integers Sum up to Zero Leetcode Solution	4776
245	Check If N and Its Double Exist Leetcode Solution	4766
246	Stone Game LeetCode	4748
247	Find Triplet in Array With a Given Sum	4747
248	Number of Steps to Reduce a Number to Zero Leetcode Solution	4710
249	Minimum swaps required to bring all elements less than or equal to k together	4709
250	Flipping an Image LeetCode Solution	4706
251	Prim’s Algorithm	4701
252	Reverse Only Letters LeetCode Solution	4692
253	Stock Buy Sell to Maximize Profit	4665
254	Remove Minimum Characters so that Two Strings Become Anagrams	4661
255	Min Cost Climbing Stairs LeetCode Solution	4658
256	Find The Duplicate Number	4646
257	Top K Frequent Elements	4638
258	Student Attendance Record I Leetcode Solution	4634
259	Minimum Knight Moves LeetCode Solution	4633
260	Min Stack	4597
261	To Lower Case Leetcode Solution	4580
262	Smallest Positive Number Missing in an Unsorted Array	4564
263	The kth Factor of n Leetcode Solution	4563
264	Minimum Operations to convert X to Y	4560
265	License Key Formatting Leetcode Solution	4540
266	Reverse words in a string	4539
267	Maximum Sum Increasing Subsequence	4531
268	Maximum Subarray Sum using Divide and Conquer	4520
269	Single Number	4514
270	Maximum Population Year LeetCode Solution	4494
271	Search Suggestions System LeetCode Solution	4459
272	Longest Common Subsequence	4436
273	Special Array With X Elements Greater Than or Equal X Leetcode Solution	4435
274	Top K Frequent Words LeetCode Solution	4434
275	Remove Nth Node From End of List Leetcode Solution	4433
276	Reformat Date LeetCode Solution	4432
277	Find Words That Can Be Formed by Characters Leetcode Solution	4425
278	Sum of Subarray Ranges Leetcode Solution	4421
279	Find the Number Occurring Odd Number of Times in an Array	4418
280	Minimum Path Sum Leetcode Solution	4377
281	Maximum Depth of Binary Tree Leetcode Solution	4360
282	Pairs of Songs With Total Durations Divisible by 60 LeetCode Solution	4351
283	BFS for Disconnected Graph	4344
284	N-th Tribonacci Number Leetcode Solution	4339
285	Reveal Cards In Increasing Order Leetcode Solution	4338
286	Boolean Parenthesization Problem	4311
287	Intersection of Two Arrays	4309
288	Reverse individual words	4308
289	House Robber	4290
290	Diagonal Traverse LeetCode Solution	4283
291	Minimum Characters to be Added at Front to Make String Palindrome	4279
292	Last Stone Weight II LeetCode Solution	4275
293	Remove Duplicates from Sorted List LeetCode Solution	4274
294	Evaluate Division	4271
295	Maximize Distance to Closest Person LeetCode Solution	4268
296	Best Time to Buy and Sell Stock III Leetcode Solution	4256
297	Find any one of the multiple repeating elements in read only array	4252
298	Binary Tree Inorder Traversal LeetCode Solution	4246
299	Find if Path Exists in Graph Leetcode Solution	4241
300	Design A Leaderboard Leetcode Solution	4238
301	Count Number of Occurrences in a Sorted Array	4232
302	Count of index pairs with equal elements in an array	4226
303	Length of Longest valid Substring	4214
304	Sort Elements by Frequency of Occurrences	4214
305	Maximum Size Subarray Sum Equals k Leetcode Solution	4191
306	Most Frequent Element in an Array	4182
307	Range Sum Query 2D – Immutable Leetcode Solution	4174
308	Minimum number of Merge Operations to make an Array Palindrome	4174
309	Reverse Nodes in k-Group LeetCode Solution	4159
310	Implement a stack using single queue	4159
311	Brightest Position on Street LeetCode Solution	4131
312	Find the Closest Palindrome number	4128
313	Mobile Numeric Keypad Problem	4122
314	Sudoku Solver	4118
315	Find Leaves of Binary Tree LeetCode Solution	4116
316	Remove All Ones With Row and Column Flips Leetcode Solution	4110
317	Reverse Bits	4096
318	Find Index of Closing Bracket for a Given Opening Bracket in an Expression	4095
319	Spiral Matrix II Leetcode Solution	4087
320	Invalid Transactions LeetCode Solution	4081
321	Partition Array Into Three Parts With Equal Sum Leetcode Solution	4076
322	Special Positions in a Binary Matrix Leetcode Solution	4063
323	Symmetric Tree Leetcode Solution	4054
324	Shortest Word Distance Leetcode Solution	4052
325	Sort Array By Parity II Leetcode Solution	4040
326	Paint House LeetCode Solution	4039
327	Split Linked List in Parts Leetcode Solution	4037
328	Maximum Subarray	4026
329	Diagonal Traversal LeetCode Solution	4016
330	Arrange given Numbers to Form the Biggest Number II	4013
331	One Edit Distance LeetCode Solution	4007
332	Find Duplicates in an Array in Most Efficient Way	3989
333	Remove Invalid Parentheses Leetcode Solution	3977
334	Largest Rectangle in Histogram LeetCode Solution	3972
335	Binary Tree Zigzag Level Order Traversal LeetCode Solution	3963
336	Rank Transform of an Array Leetcode Solution	3959
337	Round Robin Scheduling	3959
338	Jump Game	3956
339	Unique Paths	3955
340	Dijkstra Algorithm	3955
341	Partition Labels LeetCode Solution	3948
342	Hamming Distance Leetcode Solution	3942
343	Alien Dictionary LeetCode Solution	3933
344	Minimum Moves to Equal Array Elements Leetcode Solution	3932
345	Maximal Square	3913
346	Construct BST from its given Level Order Traversal	3901
347	String Matching in an Array Leetcode Solution	3898
348	Range Sum of BST LeetCode Solution	3896
349	Lowest Common Ancestor of a Binary Tree Leetcode Solution	3895
350	Find Winner on a Tic Tac Toe Game Leetcode Solution	3894
351	Tug of War	3892
352	Bitwise AND of Numbers Range LeetCode Solution	3885
353	Minimum operation to make all elements equal in array	3883
354	Next Permutation LeetCode Solution	3877
355	The Celebrity Problem	3876
356	Minimum Depth of Binary Tree Leetcode Solution	3874
357	Least Number of Unique Integers after K Removals Leetcode Solution	3872
358	Minimum Time to Collect All Apples in a Tree LeetCode Solution	3869
359	Longest Common Prefix using Trie	3851
360	Pair of Positive Negative Values in an Array	3847
361	Merge Two Sorted Linked Lists	3841
362	Maximum Length of a Concatenated String with Unique Characters Leetcode Solution	3835
363	Maximum Circular Subarray Sum	3832
364	Smallest Subarray with k Distinct Numbers	3827
365	Given an Array of Pairs Find all Symmetric Pairs in it	3822
366	Check whether Strings are K Distance Apart or Not	3816
367	Unique Paths III LeetCode Solution	3813
368	K Empty Slots LeetCode	3810
369	Transpose Graph	3809
370	Minimum Cost to Hire K Workers	3809
371	Postfix to Prefix Conversion	3809
372	Minimum Time Visiting All Points Leetcode Solution	3803
373	Clone Graph LeetCode Solution	3797
374	Robot Bounded In Circle LeetCode Solution	3796
375	Count of Triplets With Sum Less than Given Value	3794
376	Validate Stack Sequences LeetCode Solution	3793
377	Minimum Number of Steps to Make Two Strings Anagram Leetcode Solutions	3788
378	Next Greater Element III LeetCode Solution	3779
379	Find minimum difference between any two elements	3779
380	Check if a given array contains duplicate elements within k distance from each other	3776
381	Substring with Concatenation of All Words Leetcode Solution	3775
382	Ugly Number II LeetCode Solution	3768
383	Invert Binary Tree LeetCode Solution	3761
384	Regular Expression Matching Regular Expression Matching LeetCode Solution	3761
385	Sort a stack using a temporary stack	3759
386	Implementation of Deque using circular array	3758
387	Longest Substring with At Most K Distinct Characters LeetCode Solution	3753
388	Minimize Maximum Pair Sum in Array LeetCode Solution	3752
389	Kruskal Algorithm	3740
390	Invert Binary Tree LeetCode Solution	3734
391	Recursion	3731
392	Permutation Sequence LeetCode Solution	3726
393	Non-decreasing Array LeetCode Solution	3719
394	Graph Valid Tree LeetCode Solution	3710
395	Design Browser History LeetCode Solution	3704
396	Best Time to Buy and Sell Stock with Cooldown Leetcode Solution	3702
397	Sliding Window Technique	3699
398	Find the subarray with least average	3698
399	LRU Cache Implementation	3696
400	Word Search	3693
401	Kth Smallest Element in a BST Leetcode Solution	3691
402	Missing Element in Sorted Array LeetCode Solution	3687
403	Longest subarray not having more than K distinct elements	3675
404	Longest subsequence such that difference between adjacents is one	3675
405	Stack Permutations (Check if an array is stack permutation of other)	3675
406	Toeplitz Matrix	3674
407	Find the Smallest Divisor given a Threshold Leetcode Solution	3673
408	Find duplicates in a given array when elements are not limited to a range	3673
409	Convert Sorted Array to Binary Search Tree LeetCode Solutions	3672
410	Find the First and Second Smallest Elements	3668
411	Partition List Leetcode Solution	3667
412	Path With Maximum Minimum Value LeetCode Solution	3659
413	3 Sum	3653
414	Number of Islands II LeetCode Solution	3652
415	Find Top K (or Most Frequent) Numbers in a Stream	3647
416	Common elements in all rows of a given matrix	3646
417	K Closest Points to Origin Leetcode Solution	3643
418	Stone Game II Leetcode	3641
419	First Circular Tour to Visit all the Petrol Bunks	3635
420	Max stack	3631
421	Find Maximum Level sum in Binary Tree	3629
422	Queries for counts of array elements with values in given range	3627
423	Number Complement Leetcode Solution	3626
424	Sequences of given length where every element is more than or equal to twice of previous	3623
425	Combination Sum IV LeetCode Solution	3619
426	Number of Smaller Elements on Right Side	3618
427	Maximum Number of Occurrences of a Substring Leetcode Solution	3614
428	Integer Break LeetCode Solution	3614
429	Snakes and Ladders LeetCode Solution	3612
430	Search a 2D Matrix II Leetcode Solution	3611
431	Top View of Binary Tree	3609
432	Minesweeper LeetCode Solution	3606
433	Find the Peak Element from an Array	3587
434	LRU Cache Leetcode Solution	3586
435	Painting Fence Algorithm	3586
436	Priority Queue using doubly linked list	3585
437	Nth Catalan Number	3581
438	Odd Even Linked List Leetcode Solution	3576
439	Can Make Arithmetic Progression From Sequence Leetcode Solution	3575
440	Longest Palindrome can be Formed by Removing or Rearranging Characters	3567
441	Sort elements by frequency	3566
442	Find Minimum in Rotated Sorted Array II LeetCode Solution	3559
443	Insert Interval Leetcode Solution	3559
444	High Five LeetCode Solution	3553
445	Check if Two given Strings are Isomorphic to each other	3549
446	Rearrange array such that even positioned are greater than odd	3545
447	Flood Fill LeetCode	3540
448	Maximum Consecutive Numbers Present in an Array	3538
449	Search in a Binary Search Tree Leetcode Solution	3532
450	Consecutive Characters LeetCode Solution	3529
451	Shortest Palindrome	3522
452	Sliding Window Maximum LeetCode Solution	3512
453	Distance of nearest cell having 1 in a binary matrix	3509
454	Design a stack that supports getMin() in O(1) time and O(1) extra space	3499
455	4Sum	3494
456	Fibonacci Number LeetCode Solution	3490
457	Expression Contains Redundant Bracket or Not	3489
458	Move All the Zeros to the End of the Given Array	3489
459	Tiling Problem	3488
460	Count items common to both the lists but with different prices	3473
461	Spiral Matrix III LeetCode Solution	3471
462	Number of Closed Islands Leetcode Solution	3470
463	Replace Elements with Greatest Element on Right Side Leetcode Solution	3467
464	Gold Mine Problem	3466
465	Minimum Absolute Difference in BST Leetcode Solution	3464
466	Kth Non-repeating Character	3459
467	Find a Peak Element II LeetCode Solution	3458
468	Insert into a Binary Search Tree Leetcode Solution	3457
469	Decompress Run-Length Encoded List Leetcode Solution	3455
470	Check If Array Pairs Are Divisible by k LeetCode Solution	3450
471	Integer to English words	3449
472	Queries for GCD of all numbers of an array except elements in a given range	3438
473	Restore IP Addresses Leetcode Solution	3437
474	Evaluate Reverse Polish Notation LeetCode Solution	3435
475	N queen problem	3435
476	Minimum Path Sum	3434
477	Trapping Rain Water LeetCode Solution	3429
478	Longest Common Prefix using Sorting	3427
479	Coin Change Problem	3426
480	Balanced Expression with Replacement	3424
481	Find All Possible Recipes from Given Supplies LeetCode Solution	3408
482	Convert Sorted Array to Binary Search Tree Leetcode Solution	3408
483	Interval Tree	3407
484	Sorting array using Stacks	3405
485	Sliding Window Median Leetcode Solution	3404
486	Binary Tree Maximum Path Sum LeetCode Solution	3402
487	Sort an array according to the order defined by another array	3394
488	Cells with Odd Values in a Matrix LeetCode Solution	3388
489	Sort Colors	3387
490	Majority Element	3377
491	Best Time to Buy and Sell Stock	3373
492	Rearrange an array in order – smallest, largest, 2nd smallest, 2nd largest	3372
493	Find Pythagorean Triplets from Array	3368
494	Palindrome Substring Queries	3366
495	Vertical Order Traversal of Binary Tree LeetCode Solution	3364
496	Number of Days Between Two Dates LeetCode Solution	3362
497	Reverse a linked list	3361
498	Priority Queue in C++	3357
499	Path Sum II LeetCode Solution	3344
500	Minimum Number of Taps to Open to Water a Garden LeetCode Solution	3342
501	The Stock Span Problem	3341
502	Subset sum problem	3330
503	Find Median from Data Stream LeetCode Solution	3328
504	Is Graph Bipartite? LeetCode Solution	3319
505	Queue using Stacks	3318
506	Largest rectangular sub-matrix whose sum is 0	3312
507	Camelcase Matching Leetcode Solution	3309
508	Intersection of Two Linked Lists LeetCode Solution	3303
509	Sieve of Eratosthenes	3303
510	Design Hit Counter LeetCode Solution	3301
511	How to Implement Stack Using Priority Queue or Heap?	3301
512	Find the first Repeating Number in a Given Array	3300
513	Custom Sort String Leetcode Solution	3295
514	Kth ancestor of a node in binary tree	3291
515	Pancake Sorting Problem	3290
516	Different Ways to Add Parentheses Leetcode Solution	3289
517	Fibonacci numbers	3285
518	Analyze User Website Visit Pattern LeetCode Solution	3278
519	Multiplication of Two Matrices	3278
520	Divide Chocolate LeetCode Solution	3276
521	Longest Increasing Path in a Matrix LeetCode Solution	3274
522	Shortest Completing Word Leetcode Solution	3271
523	Scramble String LeetCode Solution	3261
524	Path Crossing Leetcode Solution	3261
525	Best Time to Buy and Sell Stock with Transaction Fee Leetcode Solution	3256
526	Count Submatrices With All Ones LeetCode Solution	3250
527	Perfect Squares LeetCode Solution	3250
528	Count subarrays having total distinct elements same as original array	3248
529	Check if Array Contains Contiguous Integers With Duplicates Allowed	3246
530	Group Anagrams	3245
531	Determine Whether Matrix Can Be Obtained By Rotation LeetCode Solution	3242
532	Find a Fixed Point in a Given Array	3242
533	Monotonic Array Leetcode Solution	3236
534	Queue based approach for first non-repeating character in a stream	3227
535	Detect a loop in the Linked List	3226
536	Implement Trie (Prefix Tree) Leetcode Solution	3221
537	Shifting Letters LeetCode Solution	3204
538	Number of Distinct Islands Leetcode Solution	3203
539	Merge Overlapping Intervals	3203
540	Minimum Height Trees	3202
541	Reorder Data in Log Files LeetCode Solution	3198
542	Construction of Longest Increasing Subsequence (N log N)	3196
543	How to Create Mergable Stack?	3193
544	Nearest Exit from Entrance in Maze LeetCode Solution	3187
545	Valid Boomerang Leetcode Solution	3187
546	Generate all Binary Strings from Given Pattern	3187
547	Champagne Tower LeetCode Solution	3182
548	Longest Common Prefix using Divide and Conquer	3179
549	Race Car LeetCode Solution	3169
550	Find the Lost Element From a Duplicated Array	3168
551	Sort a stack using recursion	3167
552	Insert Node in the Sorted Linked List	3167
553	Decode Ways	3166
554	Maximum Sum of Non Consecutive Elements	3161
555	Sliding Window Maximum	3160
556	Binary Tree zigzag level order Traversal	3157
557	Implement strStr() LeetCode Solution	3154
558	Maximum Element in an Array which is Increasing and then Decreasing	3152
559	Find if an Expression has Duplicate Parenthesis or Not	3147
560	First missing positive	3145
561	Most Stones Removed with Same Row or Column LeetCode Solution	3143
562	Recover Binary Search Tree	3136
563	Morris Traversal	3135
564	Number of Equivalent Domino Pairs Leetcode Solution	3134
565	Palindrome Permutation LeetCode Solution	3133
566	Make Two Arrays Equal by Reversing Sub-arrays Leetcode Solution	3132
567	Build an Array With Stack Operations Leetcode Solution	3132
568	LCS (Longest Common Subsequence) of three strings	3127
569	Count Possible Triangles	3127
570	Find a Sorted Subsequence of size 3	3124
571	Smallest Good Base	3121
572	Find maximum length Snake sequence	3120
573	Merge Two Binary Trees LeetCode Solution	3116
574	Best Time to Buy and Sell Stock IV LeetCode Solution	3115
575	Decode String	3112
576	Rectangle Overlap LeetCode Solution	3111
577	Design Skiplist LeetCode Solution	3104
578	Letter Case Permutation	3100
579	Longest Substring with At Least K Repeating Characters LeetCode Solution	3096
580	Minimum Bracket Reversals	3096
581	Contiguous Array LeetCode Solution	3093
582	Palindrome Partitioning Leetcode Solution	3091
583	Minimum Height Trees LeetCode Solution	3090
584	Recover Binary Search Tree Leetcode Solution	3089
585	Guess Number Higher or Lower II	3087
586	Distance Between Bus Stops Leetcode Solution	3085
587	Print all Palindromic Partitions of a String	3084
588	Largest Subarray with Equal Number of 0’s and 1’s	3074
589	Minimum number of jumps to reach end	3071
590	Maximum Number of Ways to Partition an Array LeetCode Solution	3070
591	All Possible Full Binary Trees LeetCode Solution	3069
592	Longest Repeated Subsequence	3067
593	Find the Town Judge LeetCode Solution	3063
594	Maximum Depth of N-ary Tree Leetcode Solution	3063
595	Design a Stack With Increment Operation Leetcode Solution	3059
596	K-th Distinct Element in an Array	3052
597	Maximum Length of Chain Pairs	3052
598	Group Multiple Occurrence of Array Elements Ordered by first Occurrence	3050
599	Reorder an Array According to the Given Indexes	3046
600	Find the two Numbers with Odd Occurrences in an Unsorted Array	3041
601	Implement Two Stacks in an Array	3032
602	Check for Balanced Parentheses in an Expression	3025
603	The Maze III LeetCode Solution	3023
604	Sort a String According to Another String	3018
605	Subarrays with K Different Integers Leetcode Solution	3016
606	Mean of Array After Removing Some Elements Leetcode Solution	3014
607	Valid Parentheses Leetcode Solution	3013
608	Rearrange Spaces Between Words Leetcode Solution	3013
609	Maximize Elements Using Another Array	3013
610	Jump Game IV LeetCode Solution	3009
611	Maximum Score After Splitting a String Leetcode Solution	3006
612	Maximum sum rectangle in a 2D matrix	2999
613	Count pair with Given Sum	2992
614	Contains Duplicate	2979
615	Minimum Jumps to Reach Home LeetCode Solution	2964
616	Word Break	2960
617	Convert BST to Min Heap	2959
618	Perform String Shifts Leetcode	2959
619	Valid Sudoku	2956
620	Edit Distance LeetCode Solution	2946
621	Find the First Circular Tour that visits all the Petrol Pumps	2946
622	Palindrome Permutations of a String	2943
623	Possible Bipartition LeetCode Solution	2941
624	Iterative Method to find Height of Binary Tree	2941
625	Find the Minimum Element in a Sorted and Rotated Array	2928
626	A Space Optimized DP solution for 0-1 Knapsack Problem	2927
627	Heap Sort	2926
628	Reach a Number LeetCode Solution	2922
629	Maximum Product of Splitted Binary Tree LeetCode Solution	2913
630	Best Meeting Point LeetCode Solution	2906
631	Find Largest Value in Each Tree Row LeetCode Solution	2905
632	Merge Two Balanced Binary Search Trees	2904
633	Lowest Common Ancestor of a Binary Search Tree Leetcode Solution	2902
634	Count Sub Islands LeetCode Solution	2894
635	Palindromic Substrings Leetcode Solution	2887
636	Number of palindromic paths in a matrix	2885
637	Merge Overlapping Intervals II	2883
638	Sorted Linked List to Balanced BST	2881
639	Brick Wall LeetCode Solution	2875
640	Find the Subarray of given length with Least Average	2872
641	Segregate 0s and 1s in an Array	2871
642	My Calendar I LeetCode Solution	2870
643	Palindrome Permutation	2870
644	Find First and Last Position of Element in Sorted Array LeetCode Solution	2869
645	All Unique Triplets that Sum up to a Given Value	2869
646	Caesar Cipher	2863
647	Check if the given array can represent Level Order Traversal of Binary Search Tree	2856
648	Construct BST from given Preorder Traversal	2854
649	Swapping Nodes in a Linked List Leetcode Solution	2852
650	Find Median from data Stream	2847
651	Level order Traversal in Spiral Form	2843
652	Huffman Coding	2841
653	Number of Subsequences That Satisfy the Given Sum Condition LeetCode solution	2828
654	Pair with given product	2828
655	Partition Problem	2827
656	Maximize Sum of Array after K Negations Leetcode Solution	2817
657	Word Pattern	2816
658	Merge K Sorted Arrays and Print Sorted Output	2813
659	Find all triplets with zero sum	2805
660	Validate Binary Search Tree	2800
661	Print Fibonacci sequence using 2 variables	2781
662	Find whether a subarray is in form of a mountain or not	2781
663	Count Distinct Elements in Every Window of Size K	2781
664	Maximum Frequency Stack Leetcode Solution	2776
665	Bubble sort using two Stacks	2772
666	Count Good Nodes in Binary Tree LeetCode Solution	2771
667	Detect Capital Leetcode Solution	2771
668	Minimum time required to rot all oranges	2770
669	Queries on Probability of Even or Odd Number in given Ranges	2768
670	Add two numbers	2768
671	Isomorphic Strings LeetCode Solution	2767
672	Find all pairs (a, b) in an array such that a % b = k	2767
673	Shortest Path in a Grid with Obstacles Elimination LeetCode Solution	2760
674	Range Sum Query 2D – Immutable LeetCode Solution	2758
675	Find Zeros to be Flipped so that Number of Consecutive 1’s is Maximized	2757
676	Convert Sorted List to Binary Search Tree	2756
677	Counting Bits	2755
678	Longest Subarray Having Count of 1s One More than Count of 0s	2754
679	How to Efficiently Implement k Stacks in a Single Array?	2752
680	Alien Dictionary	2751
681	Binary Tree Right Side View LeetCode Solution	2746
682	Largest Sum Contiguous Subarray	2744
683	Find four elements that sum to a given value (Hashmap)	2743
684	Split Array Into Consecutive Subsequences	2742
685	Length of Longest Fibonacci Subsequence	2738
686	Sort 0s 1s and 2s in an Array	2738
687	Binary Tree to Binary Search Tree Conversion	2736
688	Remove brackets from an algebraic string containing + and – operators	2727
689	Rotate Array	2723
690	Filter Restaurants by Vegan-Friendly, Price and Distance Leetcode Solution	2722
691	Rearrange Array such that arr[i] >= arr[j] if i is even and arr[i] <= arr[j] if i is odd and j < i	2722
692	Minimum Swaps to Group All 1’s Together Leetcode Solution	2720
693	Partition to K Equal Sum Subsets Leetcode Solution	2714
694	Print all subarrays with 0 sum	2709
695	Breadth First Search (BFS) for a Graph	2706
696	Maximum Number of Chocolates to be Distributed Equally Among k Students	2703
697	Merge Two Sorted Lists Leetcode	2697
698	Count ways to reach the nth stair using step 1, 2 or 3	2696
699	Populating Next Right Pointers in Each Node Leetcode Solution	2691
700	Populating Next Right Pointers in Each Node	2690
701	Remove Palindromic Subsequences Leetcode Solution	2689
702	Find pairs with given sum such that elements of pair are in different rows	2679
703	String comparison containing wildcards	2679
704	Partition Equal Subset Sum	2674
705	Arithmetic Slices II – Subsequence LeetCode Solution	2673
706	Web Crawler LeetCode Solution	2662
707	Happy Number	2662
708	Difference Array \| Range update query in O(1)	2661
709	Remove duplicates from sorted array	2657
710	Topological Sorting	2656
711	Concatenation of Array LeetCode Solution	2648
712	Minimum Sum Path in a Triangle	2648
713	Queue Reconstruction by Height	2648
714	Elements Appear more than N/K times in Array	2646
715	Inorder Successor of a node in Binary Tree	2644
716	Check if a Linked list of Strings form a Palindrome	2636
717	Find All Pairs With a Given Difference	2631
718	Contiguous Array Leetcode	2628
719	Reverse Nodes in K-Group	2627
720	Root to Leaf path with target sum Leetcode Solutions	2620
721	Find Duplicate Subtrees	2619
722	Increasing Subsequence of Length three with Maximum Product	2608
723	Check if String Follows Order of Characters by a Pattern or not	2606
724	Minimum Number of Arrows to Burst Balloons LeetCode Solution	2596
725	Swap Kth Node from beginning with Kth Node from End	2591
726	Longest Common Prefix Using Binary Search II	2584
727	Score of Parenthesis LeetCode Solution	2575
728	Maximum Product Subarray II	2575
729	Climbing stairs	2574
730	Container with Most Water	2573
731	Minimum Swaps to Make Strings Equal Leetcode Solution	2571
732	Finding K closest element	2568
733	Count Minimum Steps to Get the given Array	2568
734	Maximum Distance in Array	2565
735	Symmetric Tree	2560
736	Pancake Sorting	2559
737	Given a binary tree, how do you remove all the half nodes?	2558
738	Construct Binary Tree from Preorder and Postorder Traversal LeetCode Solution	2555
739	Parallel Courses II LeetCode Solution	2549
740	Minimum Cost to Move Chips to The Same Position LeetCode Solution	2547
741	Sum Root to Leaf Numbers LeetCode Solution	2546
742	An Interesting Method to generate Binary Numbers from 1 to n	2540
743	Delete Nodes and Return Forest Leetcode Solution	2538
744	Check if all levels of two Binary Tree are anagrams or not	2537
745	Deletion in a Binary Tree	2533
746	Longest Increasing Subsequence	2532
747	Construct Binary Tree from given Parent Array representation	2529
748	Find the first repeating element in an array of integers	2526
749	Substring With Concatenation Of All Words	2524
750	Delete Nth node from the end of the given linked list	2521
751	Count pairs from two linked lists whose sum is equal to a given value	2520
752	Boundary Traversal of binary tree	2517
753	Union and Intersection of two Linked Lists	2513
754	MiniMax Algorithm	2513
755	Kill Process LeetCode Solution	2510
756	Level order traversal using two Queues	2505
757	Sort Array by Increasing Frequency Leetcode Solution	2504
758	Level of Each node in a Tree from source node	2502
759	Iterative Depth First Traversal of Graph	2500
760	Linked List Cycle	2499
761	BFS vs DFS for Binary Tree	2499
762	Find K Closest Elements LeetCode Solution	2495
763	Minimum Size Subarray Sum	2494
764	Merge K Sorted Linked Lists	2493
765	Iterative Preorder Traversal	2485
766	Non-overlapping sum of two sets	2485
767	Longest Common Prefix Word by Word Matching	2481
768	Valid Anagrams	2479
769	Rearrange an Array Such that arr[i] is equal to i	2478
770	Minimum Remove to Make Valid Parentheses LeetCode Solution	2476
771	Find Maximum of Minimum for Every Window Size in a Given Array	2476
772	Nested List Weight Sum II LeetCode Solution	2464
773	Find the Difference Leetcode Solution	2461
774	New 21 Game	2458
775	Matrix Chain Multiplication	2457
776	Merging Intervals	2455
777	Verify Preorder Serialization of a Binary Tree	2451
778	Remove Duplicates from Sorted List II	2450
779	Check if a queue can be sorted into another queue using a stack	2448
780	Super Ugly Number	2448
781	Maximum size subarray sum equals k	2442
782	Friends Of Appropriate Ages LeetCode Solution	2441
783	Reservoir Sampling	2437
784	Maximum Product Subarray	2434
785	Flatten Binary Tree to Linked List LeetCode Solution	2430
786	Range LCM Queries	2429
787	Smallest Range II Leetcode Solution	2422
788	Palindrome Partitioning	2419
789	Reorder Array Using Given Indexes	2417
790	Print a Binary Tree in Vertical Order	2414
791	Balanced Binary Tree	2413
792	K maximum sums of overlapping contiguous sub-arrays	2411
793	Sum of f(a[i], a[j]) over all pairs in an array of n integers	2404
794	Missing Number	2401
795	Check if Two Expressions With Brackets are Same	2396
796	Vertical sum in a given binary tree	2395
797	Valid Triangle Number LeetCode Solution	2394
798	Defanging an IP Address LeetCode Solution	2386
799	Peak Index in a Mountain Array LeetCode Solution	2385
800	Check if any two intervals overlap among a given set of intervals	2385
801	Maximum difference between two elements such as larger element comes after smaller	2383
802	Create Maximum Number	2382
803	Minimum insertions to form a palindrome with permutations allowed	2376
804	Find Maximum Sum Possible Equal Sum of Three Stacks	2367
805	Minimum Distance Between BST Nodes Leetcode Solution	2366
806	Find subarray with given sum (Handles Negative Numbers)	2360
807	The Painter’s Partition Problem	2359
808	Lowest Common Ancestor	2359
809	Unique Binary Search Trees LeetCode Solution	2356
810	Find Three Element From Different Three Arrays Such That a + b + c = sum	2356
811	Check if a given array can represent Preorder Traversal of Binary Search Tree	2355
812	Valid Triangle Number LeetCode Solution	2350
813	Count number of triplets with product equal to given number	2349
814	Number Of Longest Increasing Subsequence	2349
815	Employee Importance LeetCode Solution	2348
816	Sorting a K Sorted Array	2346
817	Flatten 2D Vector LeetCode Solution	2344
818	Largest Submatrix With Rearrangements LeetCode Solution	2344
819	Find K Length Subarray of Maximum Average	2332
820	Check Completeness of a Binary Tree LeetCode Solution	2330
821	Kth Smallest Element in a Sorted Matrix LeetCode Solution	2329
822	Hamming Distance	2327
823	Array Nesting Leetcode Solution	2326
824	Iterative Postorder Traversal Using Two Stacks	2326
825	Closest Leaf in a Binary Tree LeetCode Solution	2325
826	Check if two nodes are on the same path in a Tree	2324
827	Find Peak Element	2322
828	Merging Two Sorted Arrays	2322
829	Third Maximum Number Leetcode Solution	2319
830	Find Common Characters Leetcode Solution	2316
831	Find distance between two nodes of a Binary Tree	2311
832	First Bad Version	2311
833	Print All Distinct Elements of a Given Integer Array	2308
834	Valid Parenthesis String	2306
835	Tree Traversal (Preorder, Inorder & Postorder)	2302
836	Find Element Using Binary Search in Sorted Array	2302
837	Products of ranges in an array	2298
838	Maximum subsequence sum such that no three are consecutive	2296
839	Maximum difference between frequency of two elements such that element having greater frequency is also greater	2294
840	Find Smallest Range Containing Elements from k Lists	2294
841	Diagonal Traversal of Binary Tree	2294
842	Largest BST Subtree LeetCode Solution	2292
843	Newman-Conway Sequence	2292
844	Print all triplets in sorted array that form AP	2288
845	Distinct Subsequences	2287
846	Find Sum of all unique sub-array sum for a given array	2283
847	Sort Elements by Frequency II	2283
848	Arrange given numbers to form the biggest number	2282
849	Bottom View of a Binary Tree	2279
850	Lower Case To Upper Case	2277
851	Maximum number of segments of lengths a, b and c	2275
852	Longest Palindromic Subsequence	2273
853	Largest divisible pairs subset	2270
854	Range Sum Query using Sparse Table	2261
855	Stone Game IV LeetCode Solution	2260
856	Largest subarray with equal number of 0s and 1s	2257
857	Path Sum	2256
858	Number of siblings of a given Node in n-ary Tree	2255
859	Compare Strings by Frequency of the Smallest Character Leetcode Solution	2254
860	Print Right View of a Binary Tree	2254
861	Stone Game IV LeetCode Solution	2252
862	Find Nth Node	2246
863	Segment Tree	2240
864	Contiguous Array	2234
865	Four Elements that Sum to Given	2233
866	Find the largest multiple of 3	2232
867	Shuffle an Array	2228
868	Binary array after M range toggle operations	2227
869	Median of Two Sorted Arrays	2226
870	Merge Two Sorted Arrays	2226
871	Longest Bitonic Subsequence	2225
872	Trapping Rain Water II LeetCode Solution	2224
873	Isomorphic Strings	2222
874	Count and Say	2220
875	Unique Binary Search Trees	2215
876	Subset Sum Problem in O(sum) space	2207
877	Permutations of a Given String Using STL	2201
878	Find Largest d in Array such that a + b + c = d	2192
879	Minimum Swaps To Make Sequences Increasing LeetCode Solution	2190
880	Encoded String With Shortest Length LeetCode Solution	2186
881	Red-Black Tree Introduction	2186
882	Maximum Product Subarray	2186
883	Valid Number	2184
884	Infix to Postfix	2184
885	Maximum Sum of 3 Non-Overlapping Subarrays	2182
886	Find unique character in a string	2181
887	Averages of Levels in Binary Tree	2178
888	Next Greater Element in an Array	2177
889	Maximum Population Year LeetCode Solution	2171
890	Transform a BST to Greater sum Tree	2170
891	Friends Pairing Problem	2169
892	Rearrange an array such that ‘arr[j]’ becomes ‘i’ if ‘arr[i]’ is ‘j’	2169
893	Height of a generic tree from parent array	2162
894	Closest Binary Search Tree Value Leetcode Solution	2161
895	Valid Perfect Square LeetCode Solution	2156
896	Count Primes in Ranges	2156
897	Write a function to get the intersection point of two Linked Lists	2155
898	Orderly Queue LeetCode Solution	2152
899	Insert Delete GetRandom	2138
900	Maximum Side Length of a Square with Sum Less than or Equal to Threshold LeetCode Solution	2137
901	Binary Search Tree Delete Operation	2137
902	The Number of Weak Characters in the Game LeetCode Solution	2134
903	Range Minimum Query (Square Root Decomposition and Sparse Table)	2133
904	Bold Words in String LeetCode Solution	2126
905	Shuffle a given Array	2125
906	Binary Tree Longest Consecutive Sequence LeetCode Solution	2121
907	Serialize and Deserialize Binary Tree	2118
908	Sentence Screen Fitting LeetCode Solution	2114
909	Minimum sum of squares of character counts in a given string after removing k characters	2108
910	Kth Smallest Number in Multiplication Table Leetcode Solution	2103
911	Edit Distance	2100
912	Diameter of N-Ary Tree LeetCode Solution	2096
913	Swap Nodes In Pairs	2095
914	Reorganize String	2095
915	Step-By-Step Directions From a Binary Tree Node to Another LeetCode Solution	2090
916	Find Minimum In Rotated Sorted Array	2088
917	Convert BST into a Min-Heap without using array	2087
918	Lowest Common Ancestor in Binary Search Tree	2082
919	Integer to Roman	2082
920	Next greater element	2080
921	Maximum Product Subarray	2076
922	K’th Largest Element in BST when modification to BST is not allowed	2062
923	Next Greater Element II LeetCode Solution	2059
924	Find the smallest binary digit multiple of given number	2052
925	Total Hamming Distance LeetCode Solution	2051
926	Advantages of BST over Hash Table	2051
927	Array Queries for multiply replacements and product	2045
928	K’th Largest element in BST using constant extra space	2045
929	Queries on XOR of greatest odd divisor of the range	2032
930	Best Meeting Point LeetCode Solution	2031
931	Koko Eating Bananas LeetCode Solution	2031
932	Write Code to Determine if Two Trees are Identical	2031
933	Serialize and Deserialize Binary Tree LeetCode Solution	2025
934	Longest Increasing Consecutive Subsequence	2020
935	Constant time range add operation on an array	2019
936	Check if an Array is Stack Sortable	2019
937	Print n terms of Newman-Conway Sequence	2018
938	Level Order Traversal of Binary Tree	2015
939	Number of Orders in the Backlog Leetcode Solution	2011
940	Reverse a Path in BST using Queue	2004
941	Image Overlap LeetCode Solution	2001
942	Range Queries for Longest Correct Bracket Subsequence	2001
943	Power of Two	1999
944	Maximum Sum Increasing Subsequence	1998
945	Clone a Binary Tree with Random Pointers	1997
946	Moving Stones Until Consecutive Leetcode Solution	1994
947	Greatest Sum Divisible by Three LeetCode Solution	1993
948	Design Underground System Leetcode Solution	1987
949	Check if X can give change to every person in the Queue	1987
950	Find minimum number of merge operations to make an array palindrome	1982
951	A program to check if a binary tree is BST or not	1979
952	Insert into a Sorted Circular Linked List LeetCode Solution	1977
953	Numbers with prime frequencies greater than or equal to k	1977
954	Valid Tic-Tac-Toe State LeetCode Solution	1975
955	Find the node with minimum value in a Binary Search Tree	1974
956	Count and Toggle Queries on a Binary Array	1969
957	Form minimum number from given sequence	1967
958	Design Add and Search Words Data Structure LeetCode Solution	1965
959	Check if each internal node of a BST has exactly one child	1962
960	Print Next Greater Number of Q queries	1962
961	Maximum Array from Two given Arrays Keeping Order Same	1959
962	Closest Binary Search Tree Value II LeetCode Solution	1956
963	Factorial Trailing Zeroes LeetCode Solution	1946
964	Check for Palindrome after every character replacement Query	1942
965	Count the Pairs at Same Distance as in English Alphabets	1942
966	Number of elements less than or equal to a given number in a given subarray	1939
967	Merge two BSTs with limited extra space	1938
968	Collect maximum points in a grid using two traversals	1934
969	Queries for Decimal Values of Subarrays of a Binary Array	1933
970	Largest Plus Sign Leetcode Solution	1930
971	Graph Cloning	1923
972	Merge Sort	1922
973	Maximum difference between first and last indexes of an element in array	1921
974	Merge Sorted Array	1917
975	Group Shifted Strings Leetcode Solution	1916
976	Dividing Array into Pairs With Sum Divisible by K	1907
977	Priority Queue	1893
978	Longest Substring Without Repeating Characters Leetcode Solution	1887
979	Count even length binary sequences with same sum of first and second half bits	1886
980	Print modified array after multiple array range increment operations	1882
981	Print Ancestors of a Given Binary Tree Node Without Recursion	1879
982	Cutting a Rod	1868
983	Kth Smallest Element in a BST	1865
984	Form Minimum Number From Given Sequence	1857
985	Swim in Rising Water LeetCode Solution	1856
986	Excel Sheet Column Number LeetCode Solution	1856
987	Count Pairs Whose Products Exist in Array	1849
988	Find maximum average subarray of k length	1847
989	Guess The Word	1844
990	Minimum Moves to Equal Array Elements LeetCode Solution	1840
991	Unique Paths II	1839
992	Excel Sheet Column Title LeetCode Solution	1838
993	Binary Search Tree	1834
994	Insert Delete GetRandom O(1) – Duplicates allowed LeetCode Solution	1828
995	Print all Possible Ways to Break a String in Bracket Form	1824
996	How to print maximum number of A’s using given four keys	1819
997	Palindrome Partitioning	1819
998	Decrease Elements To Make Array Zigzag LeetCode Solution	1816
999	Check given array of size n can represent BST of n levels or not	1814
1000	Binary Search Tree Search and Insertion	1809
1001	K Empty Slots	1809
1002	Longest Common Prefix using Character by Character Matching	1803
1003	Sorted Array to Balanced BST	1794
1004	Regular Expression Matching	1791
1005	Sum of Left Leaves LeetCode Solution	1789
1006	Minimum Possible Integer After at Most K Adjacent Swaps On Digits LeetCode Solution	1778
1007	Find postorder traversal of BST from preorder traversal	1774
1008	Construct Complete Binary Tree from its Linked List Representation	1752
1009	Maximum Depth Of Binary Tree	1734
1010	Queries for Number of Distinct Elements in a Subarray	1733
1011	Maximum weight transformation of a given string	1731
1012	Find the Town Judge LeetCode Solution	1724
1013	Binary Tree to Binary Search Tree Conversion using STL set	1717
1014	Iterative method to find ancestors of a given binary tree	1716
1015	Symmetric Tree LeetCode Solution Leetcode Solution	1706
1016	Shortest Unsorted Continuous Subarray LeetCode Solution	1698
1017	Data Structure Designing	1697
1018	Random Pick Index LeetCode Solution	1687
1019	Search in Sorted Rotated Array	1677
1020	Find Maximum Depth of Nested Parenthesis in a String	1669
1021	Search an Element in Sorted Rotated Array	1652
1022	Minimum Number of Operations to Move All Balls to Each Box LeetCode Solution	1620
1023	Kth Smallest Product of Two Sorted Arrays LeetCode Solution	1614
1024	Convert a BST to a Binary Tree such that sum of all greater keys is added to every key	1607
1025	Next Greater Element I Leetcode Solution	1568
1026	Print Maximum Length Chain of Pairs	1563
1027	Maximum Binary Tree	1546
1028	Flatten Binary Tree to Linked List LeetCode Solution	1529
1029	Find k-th smallest element in BST (Order Statistics in BST)	1528
1030	Peeking Iterator LeetCode Solution	1492
1031	Find Two Non-overlapping Sub-arrays Each With Target Sum LeetCode Solution	1471