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	43597
2	Maximum occurring character in a string	19753
3	Plus One Leetcode Solution	19315
4	Valid Parentheses LeetCode Solution	19216
5	3Sum Leetcode Solution	17200
6	Merge Sorted Arrays Leetcode Solution	15308
7	First Repeating Element	15182
8	Single Number Leetcode Solution	14872
9	Count Primes Leetcode Solutions	14671
10	Pow(x, n) Leetcode Solution	14351
11	Sqrt(x) Leetcode Solution	14182
12	Meeting Rooms II LeetCode Solution	13298
13	Concatenation of Array LeetCode Solution	12783
14	Roman to Integer Leetcode Solution	11970
15	Valid Palindrome Leetcode Solution	11853
16	Search Insert Position Leetcode Solution	11777
17	Contains Duplicate II Leetcode Solution	11760
18	Palindrome Number LeetCode Solution	11574
19	Remove Duplicates from Sorted Array Leetcode Solution	11445
20	Jump Game Leetcode Solution	11181
21	Reverse Vowels of a String Leetcode Solution	11162
22	Intersection of Two Arrays II Leetcode Solution	11063
23	Longest Substring Without Repeating Characters LeetCode Solution	11056
24	Number of Good Pairs Leetcode Solution	10923
25	Spiral Matrix LeetCode Solution	10840
26	Kids With the Greatest Number of Candies Leetcode Solution	10781
27	House Robber Leetcode Solution	10740
28	Add Binary Leetcode Solution	10633
29	Maximum Subarray Leetcode Solution	10244
30	Number Of 1 bits	10128
31	Find the Maximum Repeating Number in Array	9992
32	Text Justification LeetCode Solution	9872
33	Move Zeroes LeetCode Solution	9796
34	Jewels and Stones Leetcode Solution	9764
35	Min Stack Leetcode Solution	9654
36	Power of Two Leetcode Solution	9553
37	Longest Palindromic Substring LeetCode Solution	9523
38	Shuffle String Leetcode Solution	9450
39	Permutations Leetcode Solution	9407
40	Third Maximum Number Leetcode Solution	9299
41	Evaluation of Postfix Expression	9296
42	Word Search Leetcode Solution	9286
43	Daily Temperatures Leetcode Solution	9275
44	Find All Numbers Disappeared in an Array Leetcode Solution	9268
45	Median of Two Sorted Arrays LeetCode Solution	9197
46	Next Permutation Leetcode Solution	9174
47	Search in Rotated Sorted Array Leetcode Solution	9132
48	Number of Islands LeetCode Solution	9050
49	Kth Missing Positive Number Leetcode Solution	9020
50	Maximum Profit in Job Scheduling Leetcode Solution	9015
51	Longest Common Prefix Leetcode Solution	8939
52	Next Greater Element I Leetcode Solution	8920
53	Frog Jump Leetcode Solution	8751
54	Valid Anagram Leetcode Solution	8648
55	Find Minimum Distance Between Two Numbers in an Array	8602
56	Running Sum of 1d Array Leetcode Solution	8562
57	Rotate Image LeetCode Solution	8534
58	Shuffle the Array Leetcode Solution	8507
59	Multiply Strings Leetcode Solution	8481
60	Can Place Flowers LeetCode Solution	8446
61	Combination Sum Leetcode Solution	8443
62	Count and Say Leetcode Solution	8409
63	House Robber II Leetcode Solution	8393
64	3Sum Closest LeetCode Solution	8313
65	Bulb Switcher LeetCode Solution	8297
66	Best Time to Buy and Sell Stock LeetCode Solution	8151
67	Koko Eating Bananas Leetcode Solution	8148
68	Excel Sheet Column Title Leetcode Solution	8122
69	Happy Number Leetcode Solution	8079
70	Subarray and Subsequence	8071
71	Isomorphic Strings Leetcode Solution	8069
72	Majority Element Leetcode Solution	7982
73	Count Pairs With Given Sum	7948
74	Integer to Roman Leetcode Solution	7931
75	Candy LeetCode Solution	7917
76	Missing Number Leetcode Solution	7904
77	Product of array except self	7888
78	Rotate String LeetCode Solution	7832
79	Strobogrammatic Number LeetCode Solution	7801
80	A Product Array Puzzle	7798
81	Reverse String Without Temporary Variable	7713
82	Is Subsequence Leetcode Solution	7687
83	Find the Difference Leetcode Solution	7661
84	Binary Search LeetCode Solution	7652
85	Find the Duplicate Number LeetCode Solution	7633
86	Expression Evaluation	7608
87	Find Common Characters Leetcode Solution	7594
88	Largest Number Leetcode Solution	7576
89	Subtract the Product and Sum of Digits of an Integer Leetcode Solution	7489
90	String to Integer (atoi) LeetCode Solution	7440
91	How Many Numbers Are Smaller Than the Current Number Leetcode Solution	7417
92	Subset Leetcode	7400
93	Summary Ranges Leetcode Solution	7341
94	Rabin Karp Algorithm	7321
95	Set Matrix Zeroes	7319
96	Word Pattern LeetCode Solution	7258
97	Sort Characters By Frequency LeetCode Solution	7243
98	Balanced Binary Tree Leetcode Solution	7229
99	Find the Town Judge Leetcode Solution	7201
100	Arranging Coins Leetcode Solution	7143
101	Unique Paths Leetcode Solution	7133
102	Find the Winner of the Circular Game LeetCode Solution	7123
103	Rearrange Positive and Negative Numbers Alternatively in Array	7067
104	String Compression LeetCode Solution	7016
105	Group Anagrams LeetCode Solution	7000
106	Postfix to Infix Conversion	6985
107	Asteroid Collision LeetCode Solution	6980
108	Repeated Substring Pattern LeetCode Solution	6916
109	Page Replacement Algorithms in Operating Systems	6915
110	Smallest window in a string containing all characters of another string	6889
111	Sort Colors LeetCode Solution	6830
112	Best Time to Buy and Sell Stock II Leetcode Solution	6828
113	Matrix Chain Multiplication using Dynamic Programming	6824
114	Zigzag Conversion LeetCode Solution	6680
115	Sort Array By Parity LeetCode Solution	6679
116	Divide Two Integers Leetcode Solution	6643
117	Kth largest element in an Array Leetcode Solutions	6637
118	Valid Palindrome II Leetcode Solution	6634
119	Generate Parentheses Leetcode Solution	6631
120	Sum of minimum and maximum elements of all subarrays of size k	6622
121	Assign Cookies Leetcode Solution	6539
122	Reverse Integer Leetcode Solution	6503
123	Remove Duplicates from Sorted Array II Leetcode Solution	6498
124	Find the Row with Maximum Number of 1’s	6495
125	Decode String Leetcode Solution	6476
126	Length of Last Word Leetcode Solution	6463
127	Product of Array Except Self LeetCode Solution	6462
128	Pascal Triangle Leetcode	6440
129	H-Index Leetcode Solution	6404
130	Bus Routes Leetcode Solution	6398
131	Number of Provinces Leetcode Solution	6377
132	Merge Two Sorted Lists Leetcode Solutions	6365
133	Convert array into Zig-Zag fashion	6285
134	Linked List Cycle II LeetCode Solution	6280
135	Prefix to Infix Conversion	6279
136	Minimum Cost For Tickets Leetcode Solution	6277
137	Minimum Steps to reach target by a Knight	6274
138	Defanging an IP Address Leetcode Solution	6264
139	Optimal Account Balancing LeetCode Solution	6256
140	Employee Free Time LeetCode Solution	6255
141	Pascal’s Triangle II Leetcode Solution	6154
142	Find First and Last Position of Element in Sorted Array Leetcode Solution	6135
143	First element occurring k times in an array	6091
144	Increasing Triplet Subsequence LeetCode Solution	6076
145	Implementation of Deque using Doubly Linked List	6076
146	Merge Sorted Array LeetCode Solution	6064
147	Island Perimeter Leetcode Solution	6057
148	Build Array From Permutation Leetcode Solution	6045
149	Majority Element II Leetcode Solution	6021
150	Robot Room Cleaner Leetcode Solution	5999
151	Bellman Ford Algorithm	5974
152	Max Consecutive Ones Leetcode Solution	5960
153	OSI Model	5948
154	Swap Nodes in Pairs Leetcode Solutions	5918
155	Find Pair with Given Difference	5913
156	Check if the Elements of an Array are Consecutive	5908
157	KMP Algorithm	5900
158	Set Matrix Zeroes Leetcode Solution	5892
159	K-th Smallest Element in a Sorted Matrix	5874
160	Guess Number Higher or Lower LeetCode Solution	5862
161	Add Two Numbers II Leetcode Solution	5857
162	Find the Missing Number	5850
163	First negative integer in every window of size k	5819
164	Boolean Parenthesization Problem	5812
165	Trapping Rain Water Leetcode Solution	5810
166	Fibonacci Number LeetCode Solution	5803
167	Lemonade Change Leetcode Solution	5798
168	Subarray Sum Equals K LeetCode Solution	5797
169	Design Parking System Leetcode Solution	5790
170	Delete middle element of a stack	5768
171	First Unique Character in a String LeetCode Solution	5737
172	Word Ladder LeetCode Solution	5732
173	Coin Change 2 Leetcode Solution	5706
174	Length of the largest subarray with contiguous elements	5697
175	Find All Duplicates in an Array LeetCode Solution	5696
176	Subarray with Given Sum	5694
177	Last Stone Weight	5693
178	Subarray Product Less Than K LeetCode Solution	5686
179	Monotonic Array LeetCode Solution	5684
180	String Compression	5676
181	Capacity To Ship Packages Within D Days Leetcode Solution	5674
182	Palindrome Linked List Leetcode Solution	5656
183	Repeated Substring Pattern	5609
184	Form Minimum Number from Given Sequence of D’s and I’s	5600
185	Single Element in a Sorted Array LeetCode Solution	5591
186	Find Smallest Missing Number in a Sorted Array	5577
187	01 Matrix LeetCode Solution	5531
188	Remove Duplicates from Sorted List II LeetCode Solution	5528
189	Combinations Leetcode Solution	5522
190	Prefix to Postfix Conversion	5502
191	Continuous Subarray Sum LeetCode Solution	5492
192	Valid Perfect Square Leetcode Solution	5458
193	Reverse Words in a String III LeetCode Solution	5452
194	Iterative Implementation of Quick Sort	5446
195	Combination Sum	5439
196	Same Tree LeetCode Solution	5429
197	Break a Palindrome LeetCode Solution	5416
198	Leetcode Permutations	5408
199	Merge k Sorted Lists Leetcode Solution	5374
200	Remove Linked List Elements Leetcode Solution	5368
201	Slowest Key Leetcode Solution	5338
202	Relative Ranks Leetcode Solution	5336
203	Top K Frequent Elements LeetCode Solution	5331
204	Container With Most Water LeetCode Solution	5317
205	Backspace String Compare	5306
206	Insert Delete GetRandom O(1) Leetcode Solution	5295
207	Rotate List Leetcode Solution	5295
208	Maximum Product of Three Numbers LeetCode Solution	5290
209	Find Peak Element LeetCode Solution	5284
210	Contains Duplicate LeetCode Solution	5267
211	Find the Duplicate Element	5227
212	The K Weakest Rows in a Matrix Leetcode Solution	5209
213	Cuckoo sequence program	5205
214	Printing brackets in Matrix Chain Multiplication Problem	5185
215	Kth Largest Element in a Stream Leetcode Solution	5176
216	Second Most Repeated Word in a Sequence	5161
217	Subarray Sum Equals k	5149
218	Palindrome Number	5145
219	Longest Common Subsequence LeetCode Solution	5144
220	Remove All Occurrences of a Substring LeetCode Solution	5126
221	Max Area of Island	5094
222	Rearrange given Array in Maximum Minimum Form	5094
223	Permutation in String Leetcode Solution	5084
224	Find Leaders in an Array	5084
225	Relative Sort Array Leetcode Solution	5082
226	Make The String Great Leetcode Solution	5072
227	Generate all Binary Strings Without Consecutive 1’s	5057
228	Convert a Number to Hexadecimal Leetcode Solution	5056
229	Arithmetic Expression Evaluation	5055
230	Unique Paths II Leetcode Solution	5051
231	Check If Two String Arrays are Equivalent Leetcode Solution	5022
232	Delete Node in a Linked List Leetcode Solution	5019
233	Target Sum	5016
234	N-Queens LeetCode Solution	5005
235	Scramble String	4993
236	Construct Binary Tree from Given Inorder and Preorder Traversals	4990
237	Moving Average from Data Stream Leetcode Solution	4989
238	Time Based Key-Value Store LeetCode Solution	4986
239	Letter Combinations of a Phone Number	4967
240	Count Good Nodes in Binary Tree Leetcode Solution	4951
241	Next Permutation	4943
242	Number of Dice Rolls With Target Sum LeetCode Solution	4938
243	LRU Cache LeetCode Solution	4931
244	Find Triplet in Array With a Given Sum	4921
245	Stone Game LeetCode	4912
246	Find N Unique Integers Sum up to Zero Leetcode Solution	4901
247	Check If N and Its Double Exist Leetcode Solution	4897
248	Given two unsorted arrays find all pairs whose sum is x	4888
249	Flipping an Image LeetCode Solution	4846
250	Number of Steps to Reduce a Number to Zero Leetcode Solution	4846
251	Prim’s Algorithm	4833
252	Minimum swaps required to bring all elements less than or equal to k together	4816
253	Remove Minimum Characters so that Two Strings Become Anagrams	4802
254	Stock Buy Sell to Maximize Profit	4794
255	Top K Frequent Elements	4793
256	Minimum Operations to convert X to Y	4786
257	Reverse Only Letters LeetCode Solution	4783
258	Find The Duplicate Number	4780
259	Min Stack	4775
260	Min Cost Climbing Stairs LeetCode Solution	4771
261	Minimum Knight Moves LeetCode Solution	4766
262	Student Attendance Record I Leetcode Solution	4758
263	To Lower Case Leetcode Solution	4718
264	Smallest Positive Number Missing in an Unsorted Array	4708
265	Single Number	4703
266	Maximum Sum Increasing Subsequence	4700
267	Maximum Subarray Sum using Divide and Conquer	4680
268	The kth Factor of n Leetcode Solution	4675
269	License Key Formatting Leetcode Solution	4669
270	Reverse words in a string	4669
271	Maximum Population Year LeetCode Solution	4638
272	Longest Common Subsequence	4591
273	Find the Number Occurring Odd Number of Times in an Array	4575
274	Remove Nth Node From End of List Leetcode Solution	4571
275	Top K Frequent Words LeetCode Solution	4569
276	Search Suggestions System LeetCode Solution	4568
277	Special Array With X Elements Greater Than or Equal X Leetcode Solution	4560
278	Reformat Date LeetCode Solution	4540
279	BFS for Disconnected Graph	4537
280	Find Words That Can Be Formed by Characters Leetcode Solution	4530
281	Sum of Subarray Ranges Leetcode Solution	4524
282	Pairs of Songs With Total Durations Divisible by 60 LeetCode Solution	4506
283	Minimum Path Sum Leetcode Solution	4506
284	Maximum Depth of Binary Tree Leetcode Solution	4488
285	Reveal Cards In Increasing Order Leetcode Solution	4468
286	Intersection of Two Arrays	4446
287	N-th Tribonacci Number Leetcode Solution	4443
288	Best Time to Buy and Sell Stock III Leetcode Solution	4437
289	House Robber	4430
290	Reverse individual words	4419
291	Evaluate Division	4409
292	Diagonal Traverse LeetCode Solution	4408
293	Sort Elements by Frequency of Occurrences	4403
294	Maximize Distance to Closest Person LeetCode Solution	4402
295	Find any one of the multiple repeating elements in read only array	4398
296	Maximum Size Subarray Sum Equals k Leetcode Solution	4390
297	Last Stone Weight II LeetCode Solution	4388
298	Minimum Characters to be Added at Front to Make String Palindrome	4378
299	Design A Leaderboard Leetcode Solution	4375
300	Find if Path Exists in Graph Leetcode Solution	4364
301	Count Number of Occurrences in a Sorted Array	4362
302	Reverse Nodes in k-Group LeetCode Solution	4361
303	Remove Duplicates from Sorted List LeetCode Solution	4356
304	Count of index pairs with equal elements in an array	4349
305	Binary Tree Inorder Traversal LeetCode Solution	4348
306	Most Frequent Element in an Array	4348
307	Length of Longest valid Substring	4347
308	Range Sum Query 2D – Immutable Leetcode Solution	4339
309	Sudoku Solver	4328
310	Minimum number of Merge Operations to make an Array Palindrome	4316
311	Implement a stack using single queue	4304
312	Remove All Ones With Row and Column Flips Leetcode Solution	4303
313	Find Index of Closing Bracket for a Given Opening Bracket in an Expression	4286
314	Find the Closest Palindrome number	4265
315	Brightest Position on Street LeetCode Solution	4245
316	Mobile Numeric Keypad Problem	4244
317	Split Linked List in Parts Leetcode Solution	4235
318	Spiral Matrix II Leetcode Solution	4235
319	Find Leaves of Binary Tree LeetCode Solution	4231
320	Partition Array Into Three Parts With Equal Sum Leetcode Solution	4227
321	Special Positions in a Binary Matrix Leetcode Solution	4226
322	Reverse Bits	4210
323	Invalid Transactions LeetCode Solution	4197
324	Shortest Word Distance Leetcode Solution	4186
325	Paint House LeetCode Solution	4185
326	Maximum Subarray	4183
327	Symmetric Tree Leetcode Solution	4182
328	Arrange given Numbers to Form the Biggest Number II	4175
329	Diagonal Traversal LeetCode Solution	4142
330	Sort Array By Parity II Leetcode Solution	4140
331	Round Robin Scheduling	4134
332	Find Duplicates in an Array in Most Efficient Way	4131
333	Dijkstra Algorithm	4122
334	One Edit Distance LeetCode Solution	4115
335	Rank Transform of an Array Leetcode Solution	4095
336	Largest Rectangle in Histogram LeetCode Solution	4094
337	Partition Labels LeetCode Solution	4087
338	Remove Invalid Parentheses Leetcode Solution	4087
339	Hamming Distance Leetcode Solution	4085
340	Binary Tree Zigzag Level Order Traversal LeetCode Solution	4074
341	Alien Dictionary LeetCode Solution	4073
342	Jump Game	4073
343	Unique Paths	4073
344	Maximal Square	4062
345	Tug of War	4059
346	Minimum Moves to Equal Array Elements Leetcode Solution	4049
347	String Matching in an Array Leetcode Solution	4049
348	Minimum Time to Collect All Apples in a Tree LeetCode Solution	4029
349	The Celebrity Problem	4028
350	Find Winner on a Tic Tac Toe Game Leetcode Solution	4021
351	Next Permutation LeetCode Solution	4016
352	Construct BST from its given Level Order Traversal	4011
353	Lowest Common Ancestor of a Binary Tree Leetcode Solution	4007
354	Bitwise AND of Numbers Range LeetCode Solution	4004
355	Least Number of Unique Integers after K Removals Leetcode Solution	4004
356	Minimum operation to make all elements equal in array	4002
357	Range Sum of BST LeetCode Solution	4001
358	Validate Stack Sequences LeetCode Solution	3994
359	Postfix to Prefix Conversion	3986
360	Merge Two Sorted Linked Lists	3983
361	Minimum Depth of Binary Tree Leetcode Solution	3981
362	Unique Paths III LeetCode Solution	3979
363	Pair of Positive Negative Values in an Array	3978
364	Given an Array of Pairs Find all Symmetric Pairs in it	3974
365	Smallest Subarray with k Distinct Numbers	3970
366	Recursion	3969
367	Longest Common Prefix using Trie	3967
368	Count of Triplets With Sum Less than Given Value	3964
369	Maximum Circular Subarray Sum	3961
370	Maximum Length of a Concatenated String with Unique Characters Leetcode Solution	3957
371	Transpose Graph	3957
372	Minimum Time Visiting All Points Leetcode Solution	3953
373	Invert Binary Tree LeetCode Solution	3941
374	Check whether Strings are K Distance Apart or Not	3932
375	Minimum Number of Steps to Make Two Strings Anagram Leetcode Solutions	3928
376	Minimum Cost to Hire K Workers	3920
377	K Empty Slots LeetCode	3916
378	Substring with Concatenation of All Words Leetcode Solution	3912
379	Robot Bounded In Circle LeetCode Solution	3911
380	Next Greater Element III LeetCode Solution	3911
381	Clone Graph LeetCode Solution	3903
382	Find minimum difference between any two elements	3903
383	Check if a given array contains duplicate elements within k distance from each other	3897
384	Longest Substring with At Most K Distinct Characters LeetCode Solution	3885
385	Kruskal Algorithm	3885
386	Ugly Number II LeetCode Solution	3880
387	Implementation of Deque using circular array	3877
388	Sort a stack using a temporary stack	3863
389	Regular Expression Matching Regular Expression Matching LeetCode Solution	3857
390	Minimize Maximum Pair Sum in Array LeetCode Solution	3856
391	Stack Permutations (Check if an array is stack permutation of other)	3846
392	Invert Binary Tree LeetCode Solution	3845
393	Toeplitz Matrix	3843
394	Longest subarray not having more than K distinct elements	3842
395	Sliding Window Technique	3840
396	Graph Valid Tree LeetCode Solution	3839
397	Non-decreasing Array LeetCode Solution	3839
398	Longest subsequence such that difference between adjacents is one	3836
399	LRU Cache Implementation	3832
400	Find the First and Second Smallest Elements	3832
401	Permutation Sequence LeetCode Solution	3829
402	Word Search	3829
403	Find the subarray with least average	3825
404	Convert Sorted Array to Binary Search Tree LeetCode Solutions	3819
405	3 Sum	3819
406	Best Time to Buy and Sell Stock with Cooldown Leetcode Solution	3811
407	Kth Smallest Element in a BST Leetcode Solution	3807
408	Design Browser History LeetCode Solution	3804
409	Missing Element in Sorted Array LeetCode Solution	3796
410	Find the Smallest Divisor given a Threshold Leetcode Solution	3793
411	Find duplicates in a given array when elements are not limited to a range	3784
412	Number of Islands II LeetCode Solution	3778
413	Priority Queue using doubly linked list	3773
414	Number Complement Leetcode Solution	3772
415	Stone Game II Leetcode	3772
416	Queries for counts of array elements with values in given range	3767
417	Partition List Leetcode Solution	3766
418	Common elements in all rows of a given matrix	3766
419	Top View of Binary Tree	3765
420	K Closest Points to Origin Leetcode Solution	3760
421	Max stack	3759
422	First Circular Tour to Visit all the Petrol Bunks	3759
423	Path With Maximum Minimum Value LeetCode Solution	3757
424	Find Top K (or Most Frequent) Numbers in a Stream	3756
425	LRU Cache Leetcode Solution	3746
426	Number of Smaller Elements on Right Side	3745
427	Maximum Number of Occurrences of a Substring Leetcode Solution	3740
428	Minesweeper LeetCode Solution	3739
429	Find the Peak Element from an Array	3736
430	Sequences of given length where every element is more than or equal to twice of previous	3734
431	Find Maximum Level sum in Binary Tree	3734
432	Search a 2D Matrix II Leetcode Solution	3725
433	Combination Sum IV LeetCode Solution	3723
434	Painting Fence Algorithm	3723
435	Snakes and Ladders LeetCode Solution	3720
436	Nth Catalan Number	3720
437	Can Make Arithmetic Progression From Sequence Leetcode Solution	3717
438	Fibonacci Number LeetCode Solution	3709
439	Sort elements by frequency	3709
440	Integer Break LeetCode Solution	3705
441	High Five LeetCode Solution	3694
442	4Sum	3692
443	Sliding Window Maximum LeetCode Solution	3685
444	Maximum Consecutive Numbers Present in an Array	3679
445	Insert Interval Leetcode Solution	3674
446	Odd Even Linked List Leetcode Solution	3671
447	Find Minimum in Rotated Sorted Array II LeetCode Solution	3669
448	Longest Palindrome can be Formed by Removing or Rearranging Characters	3667
449	Rearrange array such that even positioned are greater than odd	3666
450	Check if Two given Strings are Isomorphic to each other	3664
451	Flood Fill LeetCode	3662
452	Count items common to both the lists but with different prices	3658
453	Shortest Palindrome	3654
454	Distance of nearest cell having 1 in a binary matrix	3651
455	Tiling Problem	3649
456	Consecutive Characters LeetCode Solution	3648
457	Move All the Zeros to the End of the Given Array	3647
458	Search in a Binary Search Tree Leetcode Solution	3637
459	Gold Mine Problem	3637
460	Design a stack that supports getMin() in O(1) time and O(1) extra space	3621
461	Insert into a Binary Search Tree Leetcode Solution	3608
462	Kth Non-repeating Character	3606
463	Expression Contains Redundant Bracket or Not	3600
464	Spiral Matrix III LeetCode Solution	3598
465	Number of Closed Islands Leetcode Solution	3593
466	N queen problem	3593
467	Replace Elements with Greatest Element on Right Side Leetcode Solution	3591
468	Find a Peak Element II LeetCode Solution	3586
469	Interval Tree	3581
470	Minimum Absolute Difference in BST Leetcode Solution	3580
471	Decompress Run-Length Encoded List Leetcode Solution	3579
472	Trapping Rain Water LeetCode Solution	3569
473	Coin Change Problem	3565
474	Check If Array Pairs Are Divisible by k LeetCode Solution	3562
475	Queries for GCD of all numbers of an array except elements in a given range	3562
476	Longest Common Prefix using Sorting	3561
477	Integer to English words	3559
478	Minimum Path Sum	3559
479	Sliding Window Median Leetcode Solution	3554
480	Evaluate Reverse Polish Notation LeetCode Solution	3552
481	Restore IP Addresses Leetcode Solution	3549
482	Convert Sorted Array to Binary Search Tree Leetcode Solution	3547
483	Sort Colors	3542
484	Sort an array according to the order defined by another array	3534
485	Binary Tree Maximum Path Sum LeetCode Solution	3531
486	Find Pythagorean Triplets from Array	3531
487	Find All Possible Recipes from Given Supplies LeetCode Solution	3525
488	Sorting array using Stacks	3523
489	Balanced Expression with Replacement	3523
490	Majority Element	3508
491	Rearrange an array in order – smallest, largest, 2nd smallest, 2nd largest	3501
492	Reverse a linked list	3498
493	Palindrome Substring Queries	3495
494	Best Time to Buy and Sell Stock	3494
495	Vertical Order Traversal of Binary Tree LeetCode Solution	3492
496	Priority Queue in C++	3490
497	Cells with Odd Values in a Matrix LeetCode Solution	3487
498	Fibonacci numbers	3478
499	Subset sum problem	3476
500	Number of Days Between Two Dates LeetCode Solution	3464
501	Find Median from Data Stream LeetCode Solution	3462
502	Queue using Stacks	3455
503	Camelcase Matching Leetcode Solution	3452
504	Path Sum II LeetCode Solution	3451
505	The Stock Span Problem	3450
506	Path Crossing Leetcode Solution	3447
507	Find the first Repeating Number in a Given Array	3442
508	Multiplication of Two Matrices	3440
509	Minimum Number of Taps to Open to Water a Garden LeetCode Solution	3439
510	Is Graph Bipartite? LeetCode Solution	3435
511	Sieve of Eratosthenes	3435
512	Design Hit Counter LeetCode Solution	3431
513	How to Implement Stack Using Priority Queue or Heap?	3415
514	Largest rectangular sub-matrix whose sum is 0	3412
515	Intersection of Two Linked Lists LeetCode Solution	3411
516	Kth ancestor of a node in binary tree	3411
517	Analyze User Website Visit Pattern LeetCode Solution	3407
518	Longest Increasing Path in a Matrix LeetCode Solution	3407
519	Custom Sort String Leetcode Solution	3401
520	Divide Chocolate LeetCode Solution	3400
521	Shortest Completing Word Leetcode Solution	3399
522	Pancake Sorting Problem	3398
523	Monotonic Array Leetcode Solution	3381
524	Different Ways to Add Parentheses Leetcode Solution	3377
525	Count Submatrices With All Ones LeetCode Solution	3377
526	Find a Fixed Point in a Given Array	3376
527	Count subarrays having total distinct elements same as original array	3375
528	Generate all Binary Strings from Given Pattern	3372
529	Best Time to Buy and Sell Stock with Transaction Fee Leetcode Solution	3370
530	Check if Array Contains Contiguous Integers With Duplicates Allowed	3368
531	Detect a loop in the Linked List	3366
532	Scramble String LeetCode Solution	3365
533	Group Anagrams	3364
534	Determine Whether Matrix Can Be Obtained By Rotation LeetCode Solution	3352
535	Perfect Squares LeetCode Solution	3343
536	Minimum Height Trees	3343
537	Queue based approach for first non-repeating character in a stream	3337
538	Valid Boomerang Leetcode Solution	3333
539	Construction of Longest Increasing Subsequence (N log N)	3332
540	Shifting Letters LeetCode Solution	3331
541	Implement strStr() LeetCode Solution	3327
542	Morris Traversal	3327
543	Merge Overlapping Intervals	3322
544	Decode Ways	3322
545	Implement Trie (Prefix Tree) Leetcode Solution	3315
546	How to Create Mergable Stack?	3315
547	Nearest Exit from Entrance in Maze LeetCode Solution	3313
548	Number of Distinct Islands Leetcode Solution	3311
549	Maximum Element in an Array which is Increasing and then Decreasing	3310
550	Letter Case Permutation	3306
551	Reorder Data in Log Files LeetCode Solution	3305
552	Find maximum length Snake sequence	3299
553	Binary Tree zigzag level order Traversal	3295
554	Race Car LeetCode Solution	3294
555	Sliding Window Maximum	3291
556	Sort a stack using recursion	3289
557	Champagne Tower LeetCode Solution	3288
558	Best Time to Buy and Sell Stock IV LeetCode Solution	3284
559	Maximum Sum of Non Consecutive Elements	3284
560	LCS (Longest Common Subsequence) of three strings	3281
561	Longest Common Prefix using Divide and Conquer	3280
562	First missing positive	3279
563	Find the Lost Element From a Duplicated Array	3279
564	Most Stones Removed with Same Row or Column LeetCode Solution	3278
565	Find if an Expression has Duplicate Parenthesis or Not	3274
566	Number of Equivalent Domino Pairs Leetcode Solution	3273
567	Insert Node in the Sorted Linked List	3272
568	Count Possible Triangles	3267
569	Recover Binary Search Tree	3266
570	Design Skiplist LeetCode Solution	3258
571	Build an Array With Stack Operations Leetcode Solution	3258
572	Decode String	3257
573	Palindrome Permutation LeetCode Solution	3242
574	Smallest Good Base	3237
575	Make Two Arrays Equal by Reversing Sub-arrays Leetcode Solution	3233
576	Minimum Bracket Reversals	3228
577	Find a Sorted Subsequence of size 3	3225
578	Contiguous Array LeetCode Solution	3222
579	Largest Subarray with Equal Number of 0’s and 1’s	3221
580	All Possible Full Binary Trees LeetCode Solution	3219
581	Guess Number Higher or Lower II	3218
582	Longest Repeated Subsequence	3218
583	Rectangle Overlap LeetCode Solution	3217
584	Merge Two Binary Trees LeetCode Solution	3212
585	Recover Binary Search Tree Leetcode Solution	3209
586	Distance Between Bus Stops Leetcode Solution	3202
587	Longest Substring with At Least K Repeating Characters LeetCode Solution	3200
588	Maximum Length of Chain Pairs	3197
589	Find the Town Judge LeetCode Solution	3195
590	Maximum Depth of N-ary Tree Leetcode Solution	3195
591	Find the two Numbers with Odd Occurrences in an Unsorted Array	3195
592	Palindrome Partitioning Leetcode Solution	3193
593	Maximum Number of Ways to Partition an Array LeetCode Solution	3188
594	Minimum Height Trees LeetCode Solution	3187
595	Print all Palindromic Partitions of a String	3181
596	Group Multiple Occurrence of Array Elements Ordered by first Occurrence	3170
597	K-th Distinct Element in an Array	3169
598	Rearrange Spaces Between Words Leetcode Solution	3168
599	Minimum number of jumps to reach end	3168
600	Implement Two Stacks in an Array	3168
601	Design a Stack With Increment Operation Leetcode Solution	3166
602	Check for Balanced Parentheses in an Expression	3158
603	Valid Parentheses Leetcode Solution	3156
604	Reorder an Array According to the Given Indexes	3152
605	The Maze III LeetCode Solution	3150
606	Subarrays with K Different Integers Leetcode Solution	3136
607	Mean of Array After Removing Some Elements Leetcode Solution	3131
608	Sort a String According to Another String	3126
609	Jump Game IV LeetCode Solution	3123
610	Maximum sum rectangle in a 2D matrix	3117
611	Maximum Score After Splitting a String Leetcode Solution	3114
612	Maximize Elements Using Another Array	3113
613	Find the First Circular Tour that visits all the Petrol Pumps	3104
614	Count pair with Given Sum	3103
615	Contains Duplicate	3094
616	Perform String Shifts Leetcode	3091
617	Heap Sort	3088
618	Lowest Common Ancestor of a Binary Search Tree Leetcode Solution	3083
619	Word Break	3081
620	Valid Sudoku	3080
621	Convert BST to Min Heap	3078
622	Iterative Method to find Height of Binary Tree	3066
623	Find the Minimum Element in a Sorted and Rotated Array	3065
624	Possible Bipartition LeetCode Solution	3064
625	A Space Optimized DP solution for 0-1 Knapsack Problem	3062
626	Edit Distance LeetCode Solution	3058
627	Palindrome Permutations of a String	3056
628	Minimum Jumps to Reach Home LeetCode Solution	3054
629	Merge Overlapping Intervals II	3053
630	Find First and Last Position of Element in Sorted Array LeetCode Solution	3046
631	Find Largest Value in Each Tree Row LeetCode Solution	3037
632	Count Sub Islands LeetCode Solution	3033
633	Reach a Number LeetCode Solution	3021
634	Segregate 0s and 1s in an Array	3018
635	Maximum Product of Splitted Binary Tree LeetCode Solution	3016
636	Palindromic Substrings Leetcode Solution	3015
637	Best Meeting Point LeetCode Solution	3015
638	Palindrome Permutation	3014
639	Number of palindromic paths in a matrix	3009
640	All Unique Triplets that Sum up to a Given Value	3008
641	Huffman Coding	3007
642	Merge Two Balanced Binary Search Trees	3000
643	Find the Subarray of given length with Least Average	2998
644	My Calendar I LeetCode Solution	2986
645	Pair with given product	2984
646	Caesar Cipher	2983
647	Check if the given array can represent Level Order Traversal of Binary Search Tree	2980
648	Sorted Linked List to Balanced BST	2976
649	Level order Traversal in Spiral Form	2976
650	Find Median from data Stream	2972
651	Word Pattern	2962
652	Brick Wall LeetCode Solution	2960
653	Find all triplets with zero sum	2959
654	Construct BST from given Preorder Traversal	2957
655	Partition Problem	2947
656	Swapping Nodes in a Linked List Leetcode Solution	2942
657	Count Good Nodes in Binary Tree LeetCode Solution	2940
658	Number of Subsequences That Satisfy the Given Sum Condition LeetCode solution	2933
659	Merge K Sorted Arrays and Print Sorted Output	2933
660	Validate Binary Search Tree	2926
661	Print Fibonacci sequence using 2 variables	2922
662	Alien Dictionary	2919
663	Add two numbers	2915
664	Find whether a subarray is in form of a mountain or not	2913
665	Maximize Sum of Array after K Negations Leetcode Solution	2909
666	Convert Sorted List to Binary Search Tree	2907
667	Minimum time required to rot all oranges	2905
668	Isomorphic Strings LeetCode Solution	2903
669	Count Distinct Elements in Every Window of Size K	2900
670	Shortest Path in a Grid with Obstacles Elimination LeetCode Solution	2895
671	Queries on Probability of Even or Odd Number in given Ranges	2894
672	Find all pairs (a, b) in an array such that a % b = k	2894
673	Rearrange Array such that arr[i] >= arr[j] if i is even and arr[i] <= arr[j] if i is odd and j < i	2892
674	How to Efficiently Implement k Stacks in a Single Array?	2892
675	Largest Sum Contiguous Subarray	2888
676	Sort 0s 1s and 2s in an Array	2887
677	Breadth First Search (BFS) for a Graph	2884
678	Detect Capital Leetcode Solution	2881
679	Range Sum Query 2D – Immutable LeetCode Solution	2879
680	Rotate Array	2878
681	Find Zeros to be Flipped so that Number of Consecutive 1’s is Maximized	2878
682	Maximum Frequency Stack Leetcode Solution	2877
683	Longest Subarray Having Count of 1s One More than Count of 0s	2876
684	Bubble sort using two Stacks	2876
685	Filter Restaurants by Vegan-Friendly, Price and Distance Leetcode Solution	2871
686	Split Array Into Consecutive Subsequences	2869
687	Find four elements that sum to a given value (Hashmap)	2858
688	Counting Bits	2857
689	Binary Tree Right Side View LeetCode Solution	2856
690	Maximum Number of Chocolates to be Distributed Equally Among k Students	2854
691	Remove brackets from an algebraic string containing + and – operators	2848
692	Length of Longest Fibonacci Subsequence	2848
693	Binary Tree to Binary Search Tree Conversion	2836
694	Count ways to reach the nth stair using step 1, 2 or 3	2831
695	Minimum Swaps to Group All 1’s Together Leetcode Solution	2829
696	Difference Array \| Range update query in O(1)	2829
697	Partition to K Equal Sum Subsets Leetcode Solution	2819
698	Remove Palindromic Subsequences Leetcode Solution	2818
699	Print all subarrays with 0 sum	2817
700	Merge Two Sorted Lists Leetcode	2816
701	Remove duplicates from sorted array	2807
702	Populating Next Right Pointers in Each Node	2805
703	Find pairs with given sum such that elements of pair are in different rows	2803
704	Partition Equal Subset Sum	2802
705	Populating Next Right Pointers in Each Node Leetcode Solution	2795
706	Topological Sorting	2795
707	Minimum Sum Path in a Triangle	2793
708	String comparison containing wildcards	2791
709	Happy Number	2790
710	Elements Appear more than N/K times in Array	2783
711	Arithmetic Slices II – Subsequence LeetCode Solution	2779
712	Check if a Linked list of Strings form a Palindrome	2774
713	Queue Reconstruction by Height	2773
714	Contiguous Array Leetcode	2767
715	Concatenation of Array LeetCode Solution	2766
716	Web Crawler LeetCode Solution	2761
717	Find All Pairs With a Given Difference	2757
718	Reverse Nodes in K-Group	2749
719	Inorder Successor of a node in Binary Tree	2745
720	Find Duplicate Subtrees	2732
721	Minimum Number of Arrows to Burst Balloons LeetCode Solution	2731
722	Increasing Subsequence of Length three with Maximum Product	2730
723	Root to Leaf path with target sum Leetcode Solutions	2721
724	Maximum Distance in Array	2717
725	Swap Kth Node from beginning with Kth Node from End	2716
726	Finding K closest element	2709
727	Check if String Follows Order of Characters by a Pattern or not	2704
728	Symmetric Tree	2703
729	Minimum Swaps to Make Strings Equal Leetcode Solution	2701
730	Score of Parenthesis LeetCode Solution	2699
731	Maximum Product Subarray II	2695
732	Climbing stairs	2691
733	Pancake Sorting	2691
734	Given a binary tree, how do you remove all the half nodes?	2689
735	An Interesting Method to generate Binary Numbers from 1 to n	2686
736	Longest Common Prefix Using Binary Search II	2685
737	Longest Increasing Subsequence	2682
738	Construct Binary Tree from given Parent Array representation	2677
739	Count Minimum Steps to Get the given Array	2677
740	Container with Most Water	2676
741	Find the first repeating element in an array of integers	2672
742	Deletion in a Binary Tree	2670
743	Construct Binary Tree from Preorder and Postorder Traversal LeetCode Solution	2665
744	Parallel Courses II LeetCode Solution	2661
745	MiniMax Algorithm	2660
746	Union and Intersection of two Linked Lists	2658
747	Delete Nth node from the end of the given linked list	2646
748	Minimum Cost to Move Chips to The Same Position LeetCode Solution	2644
749	Delete Nodes and Return Forest Leetcode Solution	2643
750	Sum Root to Leaf Numbers LeetCode Solution	2642
751	Check if all levels of two Binary Tree are anagrams or not	2642
752	Find K Closest Elements LeetCode Solution	2635
753	Substring With Concatenation Of All Words	2634
754	Level order traversal using two Queues	2630
755	Boundary Traversal of binary tree	2626
756	BFS vs DFS for Binary Tree	2624
757	Kill Process LeetCode Solution	2623
758	Count pairs from two linked lists whose sum is equal to a given value	2621
759	Level of Each node in a Tree from source node	2617
760	Rearrange an Array Such that arr[i] is equal to i	2614
761	Sort Array by Increasing Frequency Leetcode Solution	2612
762	Non-overlapping sum of two sets	2608
763	Iterative Depth First Traversal of Graph	2608
764	Linked List Cycle	2607
765	Minimum Size Subarray Sum	2606
766	Iterative Preorder Traversal	2605
767	Minimum Remove to Make Valid Parentheses LeetCode Solution	2604
768	Nested List Weight Sum II LeetCode Solution	2604
769	Find Maximum of Minimum for Every Window Size in a Given Array	2602
770	Valid Anagrams	2598
771	New 21 Game	2598
772	Merge K Sorted Linked Lists	2592
773	Find the Difference Leetcode Solution	2586
774	Longest Common Prefix Word by Word Matching	2582
775	Remove Duplicates from Sorted List II	2577
776	Matrix Chain Multiplication	2574
777	Super Ugly Number	2574
778	Merging Intervals	2571
779	K maximum sums of overlapping contiguous sub-arrays	2569
780	Maximum size subarray sum equals k	2569
781	Reservoir Sampling	2568
782	Range LCM Queries	2567
783	Palindrome Partitioning	2555
784	Maximum Product Subarray	2549
785	Reorder Array Using Given Indexes	2544
786	Verify Preorder Serialization of a Binary Tree	2541
787	Print a Binary Tree in Vertical Order	2539
788	Check if any two intervals overlap among a given set of intervals	2537
789	Sum of f(a[i], a[j]) over all pairs in an array of n integers	2536
790	Balanced Binary Tree	2536
791	Friends Of Appropriate Ages LeetCode Solution	2533
792	Check if a queue can be sorted into another queue using a stack	2527
793	The Painter’s Partition Problem	2525
794	Create Maximum Number	2525
795	Missing Number	2524
796	Flatten Binary Tree to Linked List LeetCode Solution	2523
797	Smallest Range II Leetcode Solution	2521
798	Sorting a K Sorted Array	2514
799	Find Maximum Sum Possible Equal Sum of Three Stacks	2513
800	Defanging an IP Address LeetCode Solution	2510
801	Check if Two Expressions With Brackets are Same	2509
802	Tree Traversal (Preorder, Inorder & Postorder)	2508
803	Peak Index in a Mountain Array LeetCode Solution	2498
804	Valid Triangle Number LeetCode Solution	2496
805	Maximum difference between two elements such as larger element comes after smaller	2496
806	Vertical sum in a given binary tree	2492
807	Unique Binary Search Trees LeetCode Solution	2486
808	Find Three Element From Different Three Arrays Such That a + b + c = sum	2485
809	Lowest Common Ancestor	2483
810	Hamming Distance	2480
811	Check if a given array can represent Preorder Traversal of Binary Search Tree	2477
812	Minimum insertions to form a palindrome with permutations allowed	2476
813	Valid Triangle Number LeetCode Solution	2475
814	Count number of triplets with product equal to given number	2471
815	Largest Submatrix With Rearrangements LeetCode Solution	2469
816	Minimum Distance Between BST Nodes Leetcode Solution	2466
817	Find subarray with given sum (Handles Negative Numbers)	2464
818	Find K Length Subarray of Maximum Average	2461
819	Number Of Longest Increasing Subsequence	2460
820	Check if two nodes are on the same path in a Tree	2449
821	Iterative Postorder Traversal Using Two Stacks	2447
822	Sort Elements by Frequency II	2446
823	First Bad Version	2445
824	Find Element Using Binary Search in Sorted Array	2444
825	Flatten 2D Vector LeetCode Solution	2440
826	Find Common Characters Leetcode Solution	2440
827	Find distance between two nodes of a Binary Tree	2436
828	Merging Two Sorted Arrays	2436
829	Third Maximum Number Leetcode Solution	2435
830	Check Completeness of a Binary Tree LeetCode Solution	2434
831	Find Sum of all unique sub-array sum for a given array	2433
832	Closest Leaf in a Binary Tree LeetCode Solution	2431
833	Print All Distinct Elements of a Given Integer Array	2431
834	Employee Importance LeetCode Solution	2426
835	Array Nesting Leetcode Solution	2425
836	Maximum difference between frequency of two elements such that element having greater frequency is also greater	2424
837	Products of ranges in an array	2424
838	Maximum number of segments of lengths a, b and c	2423
839	Find Peak Element	2423
840	Find Smallest Range Containing Elements from k Lists	2419
841	Kth Smallest Element in a Sorted Matrix LeetCode Solution	2417
842	Maximum subsequence sum such that no three are consecutive	2414
843	Print all triplets in sorted array that form AP	2413
844	Newman-Conway Sequence	2412
845	Diagonal Traversal of Binary Tree	2409
846	Longest Bitonic Subsequence	2408
847	Valid Parenthesis String	2407
848	Arrange given numbers to form the biggest number	2399
849	Largest BST Subtree LeetCode Solution	2396
850	Range Sum Query using Sparse Table	2391
851	Largest subarray with equal number of 0s and 1s	2389
852	Longest Palindromic Subsequence	2389
853	Lower Case To Upper Case	2389
854	Stone Game IV LeetCode Solution	2386
855	Print Right View of a Binary Tree	2384
856	Segment Tree	2383
857	Distinct Subsequences	2383
858	Bottom View of a Binary Tree	2382
859	Trapping Rain Water II LeetCode Solution	2378
860	Find Nth Node	2377
861	Path Sum	2369
862	Median of Two Sorted Arrays	2366
863	Contiguous Array	2362
864	Four Elements that Sum to Given	2361
865	Largest divisible pairs subset	2360
866	Number of siblings of a given Node in n-ary Tree	2360
867	Shuffle an Array	2358
868	Compare Strings by Frequency of the Smallest Character Leetcode Solution	2354
869	Stone Game IV LeetCode Solution	2348
870	Find the largest multiple of 3	2345
871	Subset Sum Problem in O(sum) space	2344
872	Merge Two Sorted Arrays	2337
873	Binary array after M range toggle operations	2333
874	Isomorphic Strings	2332
875	Count and Say	2330
876	Unique Binary Search Trees	2330
877	Maximum Population Year LeetCode Solution	2323
878	Red-Black Tree Introduction	2323
879	Minimum Swaps To Make Sequences Increasing LeetCode Solution	2321
880	Permutations of a Given String Using STL	2321
881	Next Greater Element in an Array	2311
882	Infix to Postfix	2308
883	Find Largest d in Array such that a + b + c = d	2305
884	Valid Number	2303
885	Friends Pairing Problem	2301
886	Write a function to get the intersection point of two Linked Lists	2295
887	Maximum Product Subarray	2292
888	Height of a generic tree from parent array	2286
889	Encoded String With Shortest Length LeetCode Solution	2284
890	Maximum Sum of 3 Non-Overlapping Subarrays	2283
891	Rearrange an array such that ‘arr[j]’ becomes ‘i’ if ‘arr[i]’ is ‘j’	2282
892	Insert Delete GetRandom	2280
893	Closest Binary Search Tree Value Leetcode Solution	2276
894	Transform a BST to Greater sum Tree	2276
895	Averages of Levels in Binary Tree	2275
896	Find unique character in a string	2274
897	Valid Perfect Square LeetCode Solution	2272
898	Count Primes in Ranges	2270
899	The Number of Weak Characters in the Game LeetCode Solution	2269
900	Sentence Screen Fitting LeetCode Solution	2256
901	Range Minimum Query (Square Root Decomposition and Sparse Table)	2255
902	Binary Search Tree Delete Operation	2254
903	Shuffle a given Array	2253
904	Orderly Queue LeetCode Solution	2251
905	Maximum Side Length of a Square with Sum Less than or Equal to Threshold LeetCode Solution	2249
906	Edit Distance	2235
907	Binary Tree Longest Consecutive Sequence LeetCode Solution	2229
908	Minimum sum of squares of character counts in a given string after removing k characters	2221
909	Reorganize String	2220
910	Convert BST into a Min-Heap without using array	2219
911	Bold Words in String LeetCode Solution	2216
912	Serialize and Deserialize Binary Tree	2216
913	Step-By-Step Directions From a Binary Tree Node to Another LeetCode Solution	2213
914	Find Minimum In Rotated Sorted Array	2208
915	Integer to Roman	2207
916	Lowest Common Ancestor in Binary Search Tree	2199
917	Kth Smallest Number in Multiplication Table Leetcode Solution	2198
918	Swap Nodes In Pairs	2195
919	Diameter of N-Ary Tree LeetCode Solution	2193
920	Next greater element	2192
921	Maximum Product Subarray	2189
922	Koko Eating Bananas LeetCode Solution	2182
923	Print n terms of Newman-Conway Sequence	2176
924	Advantages of BST over Hash Table	2172
925	Array Queries for multiply replacements and product	2170
926	Find the smallest binary digit multiple of given number	2165
927	K’th Largest element in BST using constant extra space	2163
928	Next Greater Element II LeetCode Solution	2162
929	K’th Largest Element in BST when modification to BST is not allowed	2162
930	Constant time range add operation on an array	2161
931	Range Queries for Longest Correct Bracket Subsequence	2156
932	Write Code to Determine if Two Trees are Identical	2140
933	Total Hamming Distance LeetCode Solution	2139
934	Best Meeting Point LeetCode Solution	2139
935	Check if an Array is Stack Sortable	2136
936	Maximum Sum Increasing Subsequence	2134
937	Serialize and Deserialize Binary Tree LeetCode Solution	2133
938	Longest Increasing Consecutive Subsequence	2132
939	Queries on XOR of greatest odd divisor of the range	2130
940	Level Order Traversal of Binary Tree	2128
941	Moving Stones Until Consecutive Leetcode Solution	2120
942	Power of Two	2116
943	Image Overlap LeetCode Solution	2110
944	Clone a Binary Tree with Random Pointers	2109
945	Valid Tic-Tac-Toe State LeetCode Solution	2103
946	Reverse a Path in BST using Queue	2100
947	Greatest Sum Divisible by Three LeetCode Solution	2099
948	Check if X can give change to every person in the Queue	2098
949	Find minimum number of merge operations to make an array palindrome	2096
950	Number of Orders in the Backlog Leetcode Solution	2095
951	Check if each internal node of a BST has exactly one child	2095
952	Insert into a Sorted Circular Linked List LeetCode Solution	2093
953	Numbers with prime frequencies greater than or equal to k	2093
954	Find the node with minimum value in a Binary Search Tree	2091
955	Design Underground System Leetcode Solution	2088
956	Number of elements less than or equal to a given number in a given subarray	2087
957	A program to check if a binary tree is BST or not	2084
958	Design Add and Search Words Data Structure LeetCode Solution	2076
959	Form minimum number from given sequence	2074
960	Count the Pairs at Same Distance as in English Alphabets	2067
961	Factorial Trailing Zeroes LeetCode Solution	2065
962	Count and Toggle Queries on a Binary Array	2065
963	Maximum Array from Two given Arrays Keeping Order Same	2063
964	Graph Cloning	2060
965	Collect maximum points in a grid using two traversals	2059
966	Print Next Greater Number of Q queries	2059
967	Closest Binary Search Tree Value II LeetCode Solution	2050
968	Maximum difference between first and last indexes of an element in array	2049
969	Merge two BSTs with limited extra space	2047
970	Largest Plus Sign Leetcode Solution	2045
971	Check for Palindrome after every character replacement Query	2040
972	Queries for Decimal Values of Subarrays of a Binary Array	2038
973	Group Shifted Strings Leetcode Solution	2032
974	Merge Sorted Array	2032
975	Merge Sort	2026
976	Dividing Array into Pairs With Sum Divisible by K	2024
977	Priority Queue	2019
978	Longest Substring Without Repeating Characters Leetcode Solution	1999
979	Count even length binary sequences with same sum of first and second half bits	1995
980	Print Ancestors of a Given Binary Tree Node Without Recursion	1995
981	Kth Smallest Element in a BST	1992
982	Print modified array after multiple array range increment operations	1990
983	Excel Sheet Column Number LeetCode Solution	1983
984	Swim in Rising Water LeetCode Solution	1977
985	Cutting a Rod	1977
986	Form Minimum Number From Given Sequence	1977
987	Minimum Moves to Equal Array Elements LeetCode Solution	1975
988	Count Pairs Whose Products Exist in Array	1963
989	Guess The Word	1959
990	Find maximum average subarray of k length	1954
991	Binary Search Tree	1950
992	Insert Delete GetRandom O(1) – Duplicates allowed LeetCode Solution	1944
993	Print all Possible Ways to Break a String in Bracket Form	1944
994	How to print maximum number of A’s using given four keys	1937
995	Excel Sheet Column Title LeetCode Solution	1935
996	Unique Paths II	1935
997	Palindrome Partitioning	1923
998	K Empty Slots	1917
999	Check given array of size n can represent BST of n levels or not	1913
1000	Find postorder traversal of BST from preorder traversal	1909
1001	Binary Search Tree Search and Insertion	1909
1002	Decrease Elements To Make Array Zigzag LeetCode Solution	1899
1003	Sum of Left Leaves LeetCode Solution	1898
1004	Regular Expression Matching	1892
1005	Longest Common Prefix using Character by Character Matching	1892
1006	Minimum Possible Integer After at Most K Adjacent Swaps On Digits LeetCode Solution	1885
1007	Sorted Array to Balanced BST	1877
1008	Construct Complete Binary Tree from its Linked List Representation	1853
1009	Queries for Number of Distinct Elements in a Subarray	1847
1010	Maximum Depth Of Binary Tree	1843
1011	Iterative method to find ancestors of a given binary tree	1828
1012	Maximum weight transformation of a given string	1828
1013	Find the Town Judge LeetCode Solution	1825
1014	Shortest Unsorted Continuous Subarray LeetCode Solution	1808
1015	Binary Tree to Binary Search Tree Conversion using STL set	1793
1016	Find Maximum Depth of Nested Parenthesis in a String	1791
1017	Symmetric Tree LeetCode Solution Leetcode Solution	1789
1018	Search in Sorted Rotated Array	1784
1019	Random Pick Index LeetCode Solution	1783
1020	Data Structure Designing	1781
1021	Search an Element in Sorted Rotated Array	1743
1022	Kth Smallest Product of Two Sorted Arrays LeetCode Solution	1730
1023	Minimum Number of Operations to Move All Balls to Each Box LeetCode Solution	1718
1024	Convert a BST to a Binary Tree such that sum of all greater keys is added to every key	1713
1025	Next Greater Element I Leetcode Solution	1702
1026	Print Maximum Length Chain of Pairs	1667
1027	Flatten Binary Tree to Linked List LeetCode Solution	1650
1028	Maximum Binary Tree	1644
1029	Find k-th smallest element in BST (Order Statistics in BST)	1637
1030	Peeking Iterator LeetCode Solution	1621
1031	Find Two Non-overlapping Sub-arrays Each With Target Sum LeetCode Solution	1572