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	10820
2	Maximum occurring character in a string	8083
3	3Sum Leetcode Solution	5870
4	Valid Parentheses LeetCode Solution	5788
5	Plus One Leetcode Solution	5602
6	First Repeating Element	5040
7	Single Number Leetcode Solution	4896
8	Search Insert Position Leetcode Solution	4371
9	Find the Maximum Repeating Number in Array	4297
10	Pow(x, n) Leetcode Solution	4133
11	Contains Duplicate II Leetcode Solution	4063
12	Sqrt(x) Leetcode Solution	4033
13	Intersection of Two Arrays II Leetcode Solution	3960
14	Roman to Integer Leetcode Solution	3833
15	Count Primes Leetcode Solutions	3822
16	Running Sum of 1d Array Leetcode Solution	3800
17	Find Minimum Distance Between Two Numbers in an Array	3780
18	Kth Missing Positive Number Leetcode Solution	3759
19	Merge Sorted Arrays Leetcode Solution	3711
20	Shuffle String Leetcode Solution	3575
21	Reverse Vowels of a String Leetcode Solution	3553
22	Valid Palindrome Leetcode Solution	3541
23	Concatenation of Array LeetCode Solution	3472
24	Find All Numbers Disappeared in an Array Leetcode Solution	3452
25	Add Binary Leetcode Solution	3308
26	Word Search Leetcode Solution	3257
27	Spiral Matrix LeetCode Solution	3249
28	Meeting Rooms II LeetCode Solution	3206
29	Number Of 1 bits	3197
30	Kids With the Greatest Number of Candies Leetcode Solution	3193
31	House Robber Leetcode Solution	3162
32	Longest Palindromic Substring LeetCode Solution	3154
33	Reverse String Without Temporary Variable	3146
34	Subarray and Subsequence	3141
35	Longest Common Prefix Leetcode Solution	3120
36	Power of Two Leetcode Solution	3046
37	Jewels and Stones Leetcode Solution	3045
38	Maximum Subarray Leetcode Solution	3034
39	Jump Game Leetcode Solution	2956
40	Number of Good Pairs Leetcode Solution	2917
41	Number of Islands LeetCode Solution	2904
42	Isomorphic Strings Leetcode Solution	2878
43	Missing Number Leetcode Solution	2873
44	Third Maximum Number Leetcode Solution	2873
45	Smallest window in a string containing all characters of another string	2801
46	Bulb Switcher LeetCode Solution	2792
47	Next Greater Element I Leetcode Solution	2782
48	Combination Sum Leetcode Solution	2754
49	3Sum Closest LeetCode Solution	2748
50	Count Pairs With Given Sum	2740
51	Rearrange Positive and Negative Numbers Alternatively in Array	2734
52	Multiply Strings Leetcode Solution	2705
53	Integer to Roman Leetcode Solution	2692
54	Permutations Leetcode Solution	2672
55	Search in Rotated Sorted Array Leetcode Solution	2667
56	Median of Two Sorted Arrays LeetCode Solution	2666
57	Longest Substring Without Repeating Characters LeetCode Solution	2665
58	Subarray with Given Sum	2663
59	Move Zeroes LeetCode Solution	2628
60	Koko Eating Bananas Leetcode Solution	2603
61	First element occurring k times in an array	2602
62	Shuffle the Array Leetcode Solution	2584
63	Count and Say Leetcode Solution	2581
64	Balanced Binary Tree Leetcode Solution	2577
65	Linked List Cycle II LeetCode Solution	2568
66	Min Stack Leetcode Solution	2564
67	Rotate Image LeetCode Solution	2554
68	Check if the Elements of an Array are Consecutive	2534
69	String to Integer (atoi) LeetCode Solution	2477
70	Next Permutation Leetcode Solution	2452
71	Iterative Implementation of Quick Sort	2408
72	Find the Difference Leetcode Solution	2384
73	House Robber II Leetcode Solution	2380
74	Happy Number Leetcode Solution	2364
75	Product of array except self	2351
76	Text Justification LeetCode Solution	2340
77	Sort Elements by Frequency of Occurrences	2332
78	Maximum Profit in Job Scheduling Leetcode Solution	2302
79	Unique Paths Leetcode Solution	2301
80	Merge Two Sorted Lists Leetcode Solutions	2297
81	How Many Numbers Are Smaller Than the Current Number Leetcode Solution	2281
82	Largest Number Leetcode Solution	2280
83	Find Triplet in Array With a Given Sum	2280
84	Find the Town Judge Leetcode Solution	2264
85	Daily Temperatures Leetcode Solution	2247
86	Smallest Positive Number Missing in an Unsorted Array	2239
87	Frog Jump Leetcode Solution	2235
88	Find Common Characters Leetcode Solution	2231
89	Remove Duplicates from Sorted Array Leetcode Solution	2216
90	Capacity To Ship Packages Within D Days Leetcode Solution	2215
91	Pascal Triangle Leetcode	2205
92	Find Leaders in an Array	2204
93	A Product Array Puzzle	2189
94	Find Smallest Missing Number in a Sorted Array	2173
95	Find the Missing Number	2172
96	Rabin Karp Algorithm	2169
97	Evaluation of Postfix Expression	2168
98	Excel Sheet Column Title Leetcode Solution	2160
99	Set Matrix Zeroes	2154
100	Rotate String LeetCode Solution	2142
101	Bellman Ford Algorithm	2136
102	Rearrange given Array in Maximum Minimum Form	2127
103	Swap Nodes in Pairs Leetcode Solutions	2120
104	Length of Last Word Leetcode Solution	2117
105	Find the Winner of the Circular Game LeetCode Solution	2116
106	Subtract the Product and Sum of Digits of an Integer Leetcode Solution	2108
107	Maximum Subarray Sum using Divide and Conquer	2098
108	String Compression LeetCode Solution	2082
109	Majority Element Leetcode Solution	2077
110	Sum of minimum and maximum elements of all subarrays of size k	2070
111	Divide Two Integers Leetcode Solution	2068
112	Minimum Cost For Tickets Leetcode Solution	2067
113	Can Place Flowers LeetCode Solution	2066
114	Binary Search LeetCode Solution	2048
115	OSI Model	2028
116	Is Subsequence Leetcode Solution	2011
117	Backspace String Compare	1993
118	Subset Leetcode	1990
119	Fibonacci Number LeetCode Solution	1961
120	Expression Evaluation	1961
121	Implementation of Deque using Doubly Linked List	1948
122	K-th Smallest Element in a Sorted Matrix	1947
123	Find the Number Occurring Odd Number of Times in an Array	1941
124	Word Pattern LeetCode Solution	1938
125	Valid Palindrome II Leetcode Solution	1936
126	Find Pair with Given Difference	1933
127	Design Parking System Leetcode Solution	1927
128	Matrix Chain Multiplication using Dynamic Programming	1916
129	Find the First and Second Smallest Elements	1916
130	Palindrome Number LeetCode Solution	1914
131	Reverse Integer Leetcode Solution	1913
132	Defanging an IP Address Leetcode Solution	1911
133	Pascal’s Triangle II Leetcode Solution	1908
134	Build Array From Permutation Leetcode Solution	1906
135	Summary Ranges Leetcode Solution	1903
136	Sort Array By Parity LeetCode Solution	1890
137	Palindrome Number	1881
138	First Unique Character in a String LeetCode Solution	1872
139	Valid Anagram Leetcode Solution	1868
140	Kth largest element in an Array Leetcode Solutions	1864
141	Find First and Last Position of Element in Sorted Array Leetcode Solution	1852
142	Make The String Great Leetcode Solution	1831
143	Zigzag Conversion LeetCode Solution	1823
144	Generate all Binary Strings Without Consecutive 1’s	1822
145	Assign Cookies Leetcode Solution	1820
146	KMP Algorithm	1817
147	Stock Buy Sell to Maximize Profit	1807
148	Island Perimeter Leetcode Solution	1803
149	Repeated Substring Pattern	1788
150	Second Most Repeated Word in a Sequence	1783
151	Remove Linked List Elements Leetcode Solution	1771
152	Remove Minimum Characters so that Two Strings Become Anagrams	1763
153	Remove Duplicates from Sorted List II LeetCode Solution	1762
154	Number of Provinces Leetcode Solution	1756
155	Find the Duplicate Number LeetCode Solution	1755
156	Minimum number of Merge Operations to make an Array Palindrome	1751
157	Count of Triplets With Sum Less than Given Value	1751
158	Minimum Characters to be Added at Front to Make String Palindrome	1750
159	Page Replacement Algorithms in Operating Systems	1748
160	Detect a loop in the Linked List	1748
161	Find the Row with Maximum Number of 1’s	1745
162	Convert a Number to Hexadecimal Leetcode Solution	1739
163	Delete middle element of a stack	1739
164	Same Tree LeetCode Solution	1735
165	Max Consecutive Ones Leetcode Solution	1735
166	Minimum Steps to reach target by a Knight	1730
167	Palindrome Linked List Leetcode Solution	1729
168	Remove All Occurrences of a Substring LeetCode Solution	1722
169	Bus Routes Leetcode Solution	1706
170	Reverse Only Letters LeetCode Solution	1697
171	Best Time to Buy and Sell Stock LeetCode Solution	1695
172	Printing brackets in Matrix Chain Multiplication Problem	1686
173	The Celebrity Problem	1685
174	Arrange given Numbers to Form the Biggest Number II	1666
175	Kth Largest Element in a Stream Leetcode Solution	1664
176	Postfix to Infix Conversion	1653
177	Max Area of Island	1649
178	Strobogrammatic Number LeetCode Solution	1645
179	Find the Duplicate Element	1639
180	Prefix to Infix Conversion	1638
181	String Compression	1637
182	Sort Characters By Frequency LeetCode Solution	1627
183	Form Minimum Number from Given Sequence of D’s and I’s	1625
184	Relative Sort Array Leetcode Solution	1619
185	Convert array into Zig-Zag fashion	1619
186	Check If N and Its Double Exist Leetcode Solution	1615
187	Intersection of Two Arrays	1615
188	Leetcode Permutations	1611
189	Subarray Sum Equals k	1606
190	Subarray Product Less Than K LeetCode Solution	1600
191	Coin Change 2 Leetcode Solution	1599
192	Subarray Sum Equals K LeetCode Solution	1599
193	Combinations Leetcode Solution	1599
194	Rotate List Leetcode Solution	1598
195	First negative integer in every window of size k	1598
196	Arranging Coins Leetcode Solution	1594
197	Tug of War	1591
198	Most Frequent Element in an Array	1589
199	Number of Steps to Reduce a Number to Zero Leetcode Solution	1587
200	Find the Peak Element from an Array	1582
201	Sudoku Solver	1580
202	Break a Palindrome LeetCode Solution	1579
203	Longest Palindrome can be Formed by Removing or Rearranging Characters	1566
204	Best Time to Buy and Sell Stock  II Leetcode Solution	1562
205	Repeated Substring Pattern LeetCode Solution	1561
206	Count Possible Triangles	1561
207	Monotonic Array LeetCode Solution	1554
208	Multiplication of Two Matrices	1540
209	Asteroid Collision LeetCode Solution	1538
210	Optimal Account Balancing LeetCode Solution	1537
211	Find All Duplicates in an Array LeetCode Solution	1537
212	Prim’s Algorithm	1537
213	Robot Room Cleaner Leetcode Solution	1536
214	Scramble String	1535
215	Merge k Sorted Lists Leetcode Solution	1534
216	Delete Node in a Linked List Leetcode Solution	1525
217	Valid Perfect Square Leetcode Solution	1525
218	Guess Number Higher or Lower LeetCode Solution	1518
219	Lemonade Change Leetcode Solution	1518
220	Slowest Key Leetcode Solution	1517
221	Find N Unique Integers Sum up to Zero Leetcode Solution	1517
222	Student Attendance Record I Leetcode Solution	1514
223	License Key Formatting Leetcode Solution	1508
224	Last Stone Weight	1507
225	Target Sum	1506
226	Minimum swaps required to bring all elements less than or equal to k together	1504
227	Candy LeetCode Solution	1503
228	Maximum Circular Subarray Sum	1503
229	The K Weakest Rows in a Matrix Leetcode Solution	1502
230	Implement a stack using single queue	1502
231	Jump Game	1500
232	First Circular Tour to Visit all the Petrol Bunks	1499
233	Combination Sum	1490
234	Employee Free Time LeetCode Solution	1487
235	Reverse Words in a String III LeetCode Solution	1484
236	Check If Two String Arrays are Equivalent Leetcode Solution	1483
237	Prefix to Postfix Conversion	1481
238	Trapping Rain Water Leetcode Solution	1477
239	Decode String Leetcode Solution	1476
240	Given two unsorted arrays find all pairs whose sum is x	1474
241	Relative Ranks Leetcode Solution	1473
242	Length of Longest valid Substring	1473
243	Sort a stack using a temporary stack	1472
244	Find The Duplicate Number	1472
245	Top K Frequent Elements	1471
246	Find a Fixed Point in a Given Array	1468
247	Cuckoo sequence program	1458
248	Word Ladder LeetCode Solution	1455
249	Maximum Sum Increasing Subsequence	1453
250	Find Pythagorean Triplets from Array	1448
251	Reverse words in a string	1447
252	Find Duplicates in an Array in Most Efficient Way	1445
253	Product of Array Except Self LeetCode Solution	1443
254	Find any one of the multiple repeating elements in read only array	1441
255	Maximum Depth of Binary Tree Leetcode Solution	1440
256	Reverse individual words	1439
257	Find the Minimum Element in a Sorted and Rotated Array	1439
258	Number of Dice Rolls With Target Sum LeetCode Solution	1434
259	Evaluate Division	1433
260	Pancake Sorting Problem	1426
261	Number of Closed Islands Leetcode Solution	1421
262	01 Matrix LeetCode Solution	1413
263	Largest Subarray with Equal Number of 0’s and 1’s	1413
264	Move All the Zeros to the End of the Given Array	1412
265	Spiral Matrix II Leetcode Solution	1409
266	Maximum Product of Three Numbers LeetCode Solution	1409
267	Group Anagrams LeetCode Solution	1406
268	Remove Duplicates from Sorted List LeetCode Solution	1406
269	Minimum Path Sum Leetcode Solution	1403
270	Single Element in a Sorted Array LeetCode Solution	1400
271	Majority Element II Leetcode Solution	1399
272	To Lower Case Leetcode Solution	1396
273	Max stack	1396
274	Symmetric Tree Leetcode Solution	1391
275	Longest Common Subsequence	1385
276	Search Suggestions System LeetCode Solution	1384
277	Permutation in String Leetcode Solution	1382
278	Single Number	1381
279	Unique Paths II Leetcode Solution	1378
280	N-Queens LeetCode Solution	1376
281	Insert Node in the Sorted Linked List	1374
282	Round Robin Scheduling	1372
283	Maximize Distance to Closest Person LeetCode Solution	1369
284	Find Top K (or Most Frequent) Numbers in a Stream	1369
285	Special Array With X Elements Greater Than or Equal X Leetcode Solution	1367
286	Letter Combinations of a Phone Number	1367
287	Reverse Bits	1367
288	Merge Two Sorted Linked Lists	1365
289	Moving Average from Data Stream Leetcode Solution	1361
290	Maximum Sum of Non Consecutive Elements	1357
291	Implement Two Stacks in an Array	1356
292	Minimum operation to make all elements equal in array	1354
293	Maximum Element in an Array which is Increasing and then Decreasing	1354
294	Arithmetic Expression Evaluation	1353
295	Min Stack	1351
296	Least Number of Unique Integers after K Removals Leetcode Solution	1349
297	Palindrome Permutations of a String	1342
298	Longest Common Subsequence LeetCode Solution	1336
299	Minimum Depth of Binary Tree Leetcode Solution	1336
300	Dijkstra Algorithm	1336
301	Longest Common Prefix using Divide and Conquer	1334
302	Number of Smaller Elements on Right Side	1334
303	Kth Non-repeating Character	1328
304	Reverse a linked list	1324
305	Sort Colors LeetCode Solution	1321
306	Minimum Path Sum	1321
307	Count of index pairs with equal elements in an array	1318
308	Design Browser History LeetCode Solution	1315
309	Find if Path Exists in Graph Leetcode Solution	1315
310	Implementation of Deque using circular array	1314
311	LRU Cache LeetCode Solution	1312
312	Top K Frequent Words LeetCode Solution	1311
313	Check whether Strings are K Distance Apart or Not	1311
314	Generate all Binary Strings from Given Pattern	1310
315	Sum of Subarray Ranges Leetcode Solution	1309
316	Next Permutation	1308
317	Find Maximum Level sum in Binary Tree	1303
318	Find Winner on a Tic Tac Toe Game Leetcode Solution	1301
319	Top K Frequent Elements LeetCode Solution	1300
320	Length of the largest subarray with contiguous elements	1297
321	Word Search	1295
322	Maximum Population Year LeetCode Solution	1291
323	Find the Closest Palindrome number	1291
324	Majority Element	1291
325	Count Number of Occurrences in a Sorted Array	1290
326	Top View of Binary Tree	1289
327	Generate Parentheses Leetcode Solution	1284
328	House Robber	1280
329	Fibonacci numbers	1278
330	Maximal Square	1276
331	Find Words That Can Be Formed by Characters Leetcode Solution	1268
332	Expression Contains Redundant Bracket or Not	1266
333	Add Two Numbers II Leetcode Solution	1263
334	Unique Paths	1263
335	Print all Palindromic Partitions of a String	1263
336	Diagonal Traversal LeetCode Solution	1262
337	Continuous Subarray Sum LeetCode Solution	1259
338	Partition Array Into Three Parts With Equal Sum Leetcode Solution	1259
339	Common elements in all rows of a given matrix	1256
340	Minimum Moves to Equal Array Elements Leetcode Solution	1255
341	Find minimum difference between any two elements	1254
342	Min Cost Climbing Stairs LeetCode Solution	1253
343	Sorting array using Stacks	1253
344	Find the subarray with least average	1252
345	Pair of Positive Negative Values in an Array	1248
346	Stone Game LeetCode	1246
347	N queen problem	1244
348	Partition Labels LeetCode Solution	1243
349	Decompress Run-Length Encoded List Leetcode Solution	1243
350	Minimum Time Visiting All Points Leetcode Solution	1242
351	Caesar Cipher	1242
352	Priority Queue using doubly linked list	1238
353	Flood Fill LeetCode	1238
354	How to Implement Stack Using Priority Queue or Heap?	1234
355	N-th Tribonacci Number Leetcode Solution	1232
356	Toeplitz Matrix	1232
357	Next Greater Element III LeetCode Solution	1231
358	Minimum Operations to convert X to Y	1231
359	LRU Cache Implementation	1228
360	Rank Transform of an Array Leetcode Solution	1227
361	Minimum Number of Steps to Make Two Strings Anagram Leetcode Solutions	1226
362	Construct Binary Tree from Given Inorder and Preorder Traversals	1226
363	Time Based Key-Value Store LeetCode Solution	1222
364	Hamming Distance Leetcode Solution	1220
365	H-Index Leetcode Solution	1219
366	Find Peak Element LeetCode Solution	1215
367	Binary Tree Zigzag Level Order Traversal LeetCode Solution	1215
368	Sliding Window Technique	1214
369	Gold Mine Problem	1213
370	Find the Subarray of given length with Least Average	1203
371	Palindrome Substring Queries	1200
372	Find Leaves of Binary Tree LeetCode Solution	1196
373	Find Index of Closing Bracket for a Given Opening Bracket in an Expression	1194
374	Merge K Sorted Arrays and Print Sorted Output	1192
375	String Matching in an Array Leetcode Solution	1191
376	Transpose Graph	1191
377	Painting Fence Algorithm	1190
378	Recursion	1189
379	Mobile Numeric Keypad Problem	1188
380	Minimum Knight Moves LeetCode Solution	1187
381	Count Good Nodes in Binary Tree Leetcode Solution	1187
382	Longest Increasing Path in a Matrix LeetCode Solution	1185
383	Reorder an Array According to the Given Indexes	1180
384	Regular Expression Matching Regular Expression Matching LeetCode Solution	1177
385	Stone Game II Leetcode	1176
386	Letter Case Permutation	1175
387	Group Anagrams	1174
388	Maximum Length of Chain Pairs	1172
389	Iterative Method to find Height of Binary Tree	1171
390	Sort Array By Parity II Leetcode Solution	1164
391	Elements Appear more than N/K times in Array	1164
392	Sort elements by frequency	1163
393	Diagonal Traverse LeetCode Solution	1162
394	Remove Nth Node From End of List Leetcode Solution	1158
395	Jump Game IV LeetCode Solution	1156
396	Convert Sorted Array to Binary Search Tree Leetcode Solution	1156
397	Minimum Cost to Hire K Workers	1152
398	Kruskal Algorithm	1150
399	K Empty Slots LeetCode	1149
400	Clone Graph LeetCode Solution	1147
401	How to Create Mergable Stack?	1147
402	Nth Catalan Number	1146
403	Invalid Transactions LeetCode Solution	1144
404	Best Time to Buy and Sell Stock III Leetcode Solution	1141
405	Flipping an Image LeetCode Solution	1140
406	Range Sum of BST LeetCode Solution	1139
407	Longest subarray not having more than K distinct elements	1139
408	Partition Problem	1138
409	Integer to English words	1136
410	Maximum Subarray	1135
411	Smallest Subarray with k Distinct Numbers	1133
412	Design a stack that supports getMin() in O(1) time and O(1) extra space	1133
413	Sorted Linked List to Balanced BST	1132
414	Merge Overlapping Intervals II	1132
415	Maximum Product Subarray II	1132
416	Distance of nearest cell having 1 in a binary matrix	1131
417	Sort 0s 1s and 2s in an Array	1131
418	Merge Sorted Array LeetCode Solution	1130
419	One Edit Distance LeetCode Solution	1130
420	Reorder Array Using Given Indexes	1130
421	Maximum difference between two elements such as larger element comes after smaller	1129
422	Range Sum Query 2D – Immutable Leetcode Solution	1128
423	Insert Interval Leetcode Solution	1128
424	Interval Tree	1123
425	Find the Smallest Divisor given a Threshold Leetcode Solution	1122
426	The Stock Span Problem	1122
427	Best Time to Buy and Sell Stock	1117
428	Convert Sorted Array to Binary Search Tree LeetCode Solutions	1116
429	Check if a Linked list of Strings form a Palindrome	1116
430	Number Complement Leetcode Solution	1115
431	Given an Array of Pairs Find all Symmetric Pairs in it	1115
432	Check if Two given Strings are Isomorphic to each other	1115
433	Shortest Word Distance Leetcode Solution	1114
434	Longest Common Prefix using Sorting	1114
435	Scramble String LeetCode Solution	1111
436	Increasing Triplet Subsequence LeetCode Solution	1109
437	Best Time to Buy and Sell Stock with Cooldown Leetcode Solution	1104
438	LCS (Longest Common Subsequence) of three strings	1103
439	Merge Two Binary Trees LeetCode Solution	1099
440	Longest Common Prefix using Trie	1092
441	Find the Lost Element From a Duplicated Array	1092
442	Replace Elements with Greatest Element on Right Side Leetcode Solution	1089
443	Check if a given array contains duplicate elements within k distance from each other	1086
444	Find the two Numbers with Odd Occurrences in an Unsorted Array	1086
445	Queries for GCD of all numbers of an array except elements in a given range	1085
446	Maximum Size Subarray Sum Equals k Leetcode Solution	1080
447	Swapping Nodes in a Linked List Leetcode Solution	1079
448	Search in a Binary Search Tree Leetcode Solution	1077
449	Check if Array Contains Contiguous Integers With Duplicates Allowed	1074
450	Find duplicates in a given array when elements are not limited to a range	1072
451	Pairs of Songs With Total Durations Divisible by 60 LeetCode Solution	1071
452	Queries for counts of array elements with values in given range	1068
453	Sieve of Eratosthenes	1066
454	Maximum Depth of N-ary Tree Leetcode Solution	1065
455	Can Make Arithmetic Progression From Sequence Leetcode Solution	1064
456	Maximum Length of a Concatenated String with Unique Characters Leetcode Solution	1063
457	Invert Binary Tree LeetCode Solution	1062
458	Alien Dictionary LeetCode Solution	1062
459	Swap Kth Node from beginning with Kth Node from End	1058
460	Increasing Subsequence of Length three with Maximum Product	1057
461	4Sum	1055
462	Maximum Consecutive Numbers Present in an Array	1054
463	Maximum sum rectangle in a 2D matrix	1053
464	Find Median from Data Stream LeetCode Solution	1051
465	Sequences of given length where every element is more than or equal to twice of previous	1050
466	Sort a String According to Another String	1049
467	Find a Sorted Subsequence of size 3	1049
468	Minesweeper LeetCode Solution	1048
469	Contains Duplicate	1048
470	Insert Delete GetRandom O(1) Leetcode Solution	1047
471	Find Zeros to be Flipped so that Number of Consecutive 1’s is Maximized	1047
472	Largest Rectangle in Histogram LeetCode Solution	1046
473	Stack Permutations (Check if an array is stack permutation of other)	1046
474	Number of Days Between Two Dates LeetCode Solution	1045
475	Remove All Ones With Row and Column Flips Leetcode Solution	1044
476	Minimize Maximum Pair Sum in Array LeetCode Solution	1044
477	Last Stone Weight II LeetCode Solution	1043
478	Shortest Completing Word Leetcode Solution	1040
479	K-th Distinct Element in an Array	1040
480	Decode Ways	1040
481	Decode String	1040
482	K Closest Points to Origin Leetcode Solution	1039
483	Count Minimum Steps to Get the given Array	1039
484	Permutation Sequence LeetCode Solution	1038
485	Minimum Bracket Reversals	1034
486	Intersection of Two Linked Lists LeetCode Solution	1031
487	Check if String Follows Order of Characters by a Pattern or not	1031
488	Ugly Number II LeetCode Solution	1030
489	Minimum Absolute Difference in BST Leetcode Solution	1030
490	Postfix to Prefix Conversion	1029
491	Set Matrix Zeroes Leetcode Solution	1028
492	Minimum Time to Collect All Apples in a Tree LeetCode Solution	1026
493	Number of Subsequences That Satisfy the Given Sum Condition LeetCode solution	1022
494	Minimum Height Trees	1021
495	Reverse Nodes in k-Group LeetCode Solution	1018
496	The kth Factor of n Leetcode Solution	1018
497	Find All Possible Recipes from Given Supplies LeetCode Solution	1018
498	Palindrome Permutation	1018
499	Sort a stack using recursion	1018
500	BFS for Disconnected Graph	1016
501	Convert Sorted List to Binary Search Tree	1015
502	Count subarrays having total distinct elements same as original array	1014
503	Huffman Coding	1014
504	Subset sum problem	1011
505	Sort an array according to the order defined by another array	1010
506	Non-decreasing Array LeetCode Solution	1009
507	Find Element Using Binary Search in Sorted Array	1009
508	Missing Element in Sorted Array LeetCode Solution	1008
509	Binary Tree Maximum Path Sum LeetCode Solution	1005
510	Guess Number Higher or Lower II	1003
511	Merge Overlapping Intervals	1003
512	Sorting a K Sorted Array	1003
513	Rearrange an array in order – smallest, largest, 2nd smallest, 2nd largest	996
514	Design A Leaderboard Leetcode Solution	994
515	Check for Balanced Parentheses in an Expression	994
516	Find the first Repeating Number in a Given Array	994
517	Longest Common Prefix Word by Word Matching	993
518	Find if an Expression has Duplicate Parenthesis or Not	991
519	Merge Two Balanced Binary Search Trees	989
520	Count Submatrices With All Ones LeetCode Solution	987
521	Recover Binary Search Tree Leetcode Solution	986
522	Tiling Problem	986
523	Coin Change Problem	982
524	LRU Cache Leetcode Solution	981
525	Count items common to both the lists but with different prices	981
526	Shortest Palindrome	974
527	Longest Common Prefix Using Binary Search II	974
528	Longest Substring with At Least K Repeating Characters LeetCode Solution	970
529	Maximum Number of Occurrences of a Substring Leetcode Solution	969
530	Vertical Order Traversal of Binary Tree LeetCode Solution	967
531	Consecutive Characters LeetCode Solution	966
532	Bubble sort using two Stacks	965
533	Find All Pairs With a Given Difference	965
534	Priority Queue in C++	961
535	Count ways to reach the nth stair using step 1, 2 or 3	960
536	Balanced Expression with Replacement	960
537	Remove Duplicates from Sorted Array II Leetcode Solution	959
538	Path Sum II LeetCode Solution	958
539	Largest Sum Contiguous Subarray	957
540	MiniMax Algorithm	956
541	Valid Boomerang Leetcode Solution	954
542	Remove Invalid Parentheses Leetcode Solution	951
543	Minimum Sum Path in a Triangle	950
544	Longest Repeated Subsequence	945
545	Split Array Into Consecutive Subsequences	945
546	Rearrange Spaces Between Words Leetcode Solution	942
547	Insert into a Binary Search Tree Leetcode Solution	941
548	Edit Distance LeetCode Solution	940
549	Morris Traversal	940
550	Perform String Shifts Leetcode	935
551	Find all pairs (a, b) in an array such that a % b = k	934
552	Find K Length Subarray of Maximum Average	933
553	Print all subarrays with 0 sum	932
554	Search a 2D Matrix II Leetcode Solution	930
555	Graph Valid Tree LeetCode Solution	929
556	Container With Most Water LeetCode Solution	927
557	Integer Break LeetCode Solution	924
558	Split Linked List in Parts Leetcode Solution	923
559	Binary Tree zigzag level order Traversal	923
560	Rearrange array such that even positioned are greater than odd	922
561	Race Car LeetCode Solution	920
562	Maximum Distance in Array	920
563	Minimum number of jumps to reach end	919
564	Finding K closest element	919
565	Reverse Nodes in K-Group	919
566	Lowest Common Ancestor of a Binary Tree Leetcode Solution	918
567	Find Nth Node	918
568	Queue based approach for first non-repeating character in a stream	916
569	Trapping Rain Water LeetCode Solution	916
570	Implement Trie (Prefix Tree) Leetcode Solution	914
571	Evaluate Reverse Polish Notation LeetCode Solution	911
572	Print Fibonacci sequence using 2 variables	911
573	Hamming Distance	910
574	Container with Most Water	910
575	Validate Stack Sequences LeetCode Solution	909
576	Odd Even Linked List Leetcode Solution	909
577	Determine Whether Matrix Can Be Obtained By Rotation LeetCode Solution	908
578	Count pair with Given Sum	908
579	First missing positive	907
580	Longest subsequence such that difference between adjacents is one	905
581	Find Maximum of Minimum for Every Window Size in a Given Array	905
582	Remove brackets from an algebraic string containing + and – operators	903
583	Check if Two Expressions With Brackets are Same	901
584	Reveal Cards In Increasing Order Leetcode Solution	900
585	Next Permutation LeetCode Solution	899
586	Find a Peak Element II LeetCode Solution	898
587	Combination Sum IV LeetCode Solution	896
588	Restore IP Addresses Leetcode Solution	895
589	Convert BST to Min Heap	895
590	Add two numbers	894
591	Detect Capital Leetcode Solution	892
592	Difference Array | Range update query in O(1)	892
593	Merge Two Sorted Arrays	892
594	How to Efficiently Implement k Stacks in a Single Array?	891
595	Camelcase Matching Leetcode Solution	890
596	Reorder Data in Log Files LeetCode Solution	886
597	Check if any two intervals overlap among a given set of intervals	885
598	Largest rectangular sub-matrix whose sum is 0	885
599	Cells with Odd Values in a Matrix LeetCode Solution	884
600	Maximum Product of Splitted Binary Tree LeetCode Solution	884
601	Valid Sudoku	884
602	Recover Binary Search Tree	883
603	Brightest Position on Street LeetCode Solution	881
604	Infix to Postfix	879
605	Mean of Array After Removing Some Elements Leetcode Solution	878
606	Count and Say	878
607	String comparison containing wildcards	878
608	Unique Paths III LeetCode Solution	876
609	Queue Reconstruction by Height	875
610	Number of Equivalent Domino Pairs Leetcode Solution	873
611	Non-overlapping sum of two sets	873
612	Maximum Number of Chocolates to be Distributed Equally Among k Students	872
613	Partition List Leetcode Solution	870
614	Queue using Stacks	870
615	Remove Palindromic Subsequences Leetcode Solution	869
616	Sort Colors	867
617	Minimum Distance Between BST Nodes Leetcode Solution	866
618	Counting Bits	866
619	Number of Distinct Islands Leetcode Solution	865
620	Build an Array With Stack Operations Leetcode Solution	865
621	3 Sum	865
622	Construct BST from its given Level Order Traversal	864
623	Permutations of a Given String Using STL	864
624	Kth Smallest Element in a BST Leetcode Solution	863
625	Minimum Jumps to Reach Home LeetCode Solution	863
626	Heap Sort	863
627	Find four elements that sum to a given value (Hashmap)	862
628	Kth ancestor of a node in binary tree	861
629	Pair with given product	861
630	Median of Two Sorted Arrays	860
631	Check if a queue can be sorted into another queue using a stack	858
632	Find subarray with given sum (Handles Negative Numbers)	857
633	New 21 Game	857
634	Matrix Chain Multiplication	855
635	Construct BST from given Preorder Traversal	855
636	Different Ways to Add Parentheses Leetcode Solution	853
637	My Calendar I LeetCode Solution	853
638	Find whether a subarray is in form of a mountain or not	853
639	Find Duplicate Subtrees	853
640	The Maze III LeetCode Solution	852
641	Find all triplets with zero sum	852
642	Minimum time required to rot all oranges	852
643	Pancake Sorting	850
644	Smallest Good Base	846
645	Minimum Number of Taps to Open to Water a Garden LeetCode Solution	845
646	Segregate 0s and 1s in an Array	845
647	Snakes and Ladders LeetCode Solution	844
648	Four Elements that Sum to Given	844
649	Vertical sum in a given binary tree	843
650	Validate Binary Search Tree	843
651	Unique Binary Search Trees	842
652	Subarrays with K Different Integers Leetcode Solution	840
653	Reformat Date LeetCode Solution	840
654	Longest Subarray Having Count of 1s One More than Count of 0s	839
655	Inorder Successor of a node in Binary Tree	839
656	Sort Elements by Frequency II	839
657	Word Pattern	838
658	Invert Binary Tree LeetCode Solution	837
659	Substring with Concatenation of All Words Leetcode Solution	836
660	Maximum Score After Splitting a String Leetcode Solution	835
661	Populating Next Right Pointers in Each Node Leetcode Solution	834
662	Serialize and Deserialize Binary Tree LeetCode Solution	832
663	Count Distinct Elements in Every Window of Size K	832
664	Distance Between Bus Stops Leetcode Solution	831
665	Construction of Longest Increasing Subsequence (N log N)	831
666	Find Median from data Stream	830
667	Alien Dictionary	830
668	Find the Town Judge LeetCode Solution	827
669	Web Crawler LeetCode Solution	826
670	Find the largest multiple of 3	825
671	Design Hit Counter LeetCode Solution	824
672	Count the Pairs at Same Distance as in English Alphabets	823
673	Palindromic Substrings Leetcode Solution	820
674	Check If Array Pairs Are Divisible by k LeetCode Solution	820
675	All Unique Triplets that Sum up to a Given Value	820
676	Linked List Cycle	819
677	Special Positions in a Binary Matrix Leetcode Solution	817
678	Valid Anagrams	817
679	Is Graph Bipartite? LeetCode Solution	816
680	Maximum size subarray sum equals k	816
681	Merging Two Sorted Arrays	816
682	Merge K Sorted Linked Lists	814
683	Union and Intersection of two Linked Lists	813
684	Word Break	813
685	Find distance between two nodes of a Binary Tree	811
686	Partition to K Equal Sum Subsets Leetcode Solution	810
687	Climbing stairs	810
688	Sum Root to Leaf Numbers LeetCode Solution	809
689	Group Multiple Occurrence of Array Elements Ordered by first Occurrence	809
690	Tree Traversal (Preorder, Inorder & Postorder)	809
691	An Interesting Method to generate Binary Numbers from 1 to n	808
692	K maximum sums of overlapping contiguous sub-arrays	807
693	Maximum difference between first and last indexes of an element in array	806
694	Breadth First Search (BFS) for a Graph	805
695	Brick Wall LeetCode Solution	804
696	Custom Sort String Leetcode Solution	802
697	A Space Optimized DP solution for 0-1 Knapsack Problem	801
698	Bitwise AND of Numbers Range LeetCode Solution	800
699	Remove Duplicates from Sorted List II	799
700	Delete Nth node from the end of the given linked list	799
701	Substring With Concatenation Of All Words	799
702	Lower Case To Upper Case	799
703	Path Crossing Leetcode Solution	798
704	Populating Next Right Pointers in Each Node	796
705	Best Meeting Point LeetCode Solution	795
706	Most Stones Removed with Same Row or Column LeetCode Solution	794
707	Count Sub Islands LeetCode Solution	794
708	Minimum Height Trees LeetCode Solution	794
709	Subset Sum Problem in O(sum) space	794
710	Level order traversal using two Queues	793
711	Symmetric Tree	793
712	Possible Bipartition LeetCode Solution	792
713	Make Two Arrays Equal by Reversing Sub-arrays Leetcode Solution	792
714	Valid Parenthesis String	792
715	Find maximum length Snake sequence	791
716	Number of palindromic paths in a matrix	790
717	Spiral Matrix III LeetCode Solution	789
718	Find Common Characters Leetcode Solution	789
719	Sliding Window Maximum LeetCode Solution	787
720	Concatenation of Array LeetCode Solution	787
721	Count number of triplets with product equal to given number	787
722	Isomorphic Strings	784
723	Find First and Last Position of Element in Sorted Array LeetCode Solution	783
724	Rearrange Array such that arr[i] >= arr[j] if i is even and arr[i] <= arr[j] if i is odd and j < i	783
725	Find Three Element From Different Three Arrays Such That a + b + c = sum	783
726	Length of Longest Fibonacci Subsequence	783
727	Longest Increasing Subsequence	781
728	Iterative Preorder Traversal	780
729	Check if the given array can represent Level Order Traversal of Binary Search Tree	779
730	Divide Chocolate LeetCode Solution	778
731	Next Greater Element in an Array	778
732	Merge Two Sorted Lists Leetcode	777
733	Sliding Window Median Leetcode Solution	774
734	Design a Stack With Increment Operation Leetcode Solution	774
735	Find the first repeating element in an array of integers	774
736	Maximum Product Subarray	774
737	Partition Equal Subset Sum	771
738	Products of ranges in an array	770
739	Contiguous Array Leetcode	770
740	Palindrome Partitioning Leetcode Solution	769
741	Find Maximum Sum Possible Equal Sum of Three Stacks	769
742	Print all triplets in sorted array that form AP	768
743	Nearest Exit from Entrance in Maze LeetCode Solution	766
744	Number of Islands II LeetCode Solution	765
745	Given a binary tree, how do you remove all the half nodes?	764
746	Longest Substring with At Most K Distinct Characters LeetCode Solution	763
747	Shuffle an Array	763
748	Create Maximum Number	762
749	Print a Binary Tree in Vertical Order	761
750	Valid Parentheses Leetcode Solution	760
751	Minimum Swaps to Make Strings Equal Leetcode Solution	760
752	Rectangle Overlap LeetCode Solution	759
753	Remove duplicates from sorted array	759
754	Path With Maximum Minimum Value LeetCode Solution	757
755	Maximize Sum of Array after K Negations Leetcode Solution	757
756	Rearrange an Array Such that arr[i] is equal to i	757
757	Analyze User Website Visit Pattern LeetCode Solution	756
758	Check if two nodes are on the same path in a Tree	756
759	Print all Possible Ways to Break a String in Bracket Form	756
760	Lowest Common Ancestor of a Binary Search Tree Leetcode Solution	755
761	Shifting Letters LeetCode Solution	755
762	Find Minimum in Rotated Sorted Array II LeetCode Solution	754
763	Root to Leaf path with target sum Leetcode Solutions	754
764	Level order Traversal in Spiral Form	753
765	Best Time to Buy and Sell Stock with Transaction Fee Leetcode Solution	752
766	Construct Binary Tree from given Parent Array representation	752
767	The Painter’s Partition Problem	751
768	Boolean Parenthesization Problem	750
769	Iterative Depth First Traversal of Graph	750
770	Verify Preorder Serialization of a Binary Tree	750
771	Advantages of BST over Hash Table	749
772	Path Sum	748
773	Longest Common Prefix using Character by Character Matching	745
774	Find the Difference Leetcode Solution	744
775	Count pairs from two linked lists whose sum is equal to a given value	744
776	Find Largest Value in Each Tree Row LeetCode Solution	742
777	Boundary Traversal of binary tree	742
778	Find Peak Element	740
779	Valid Number	739
780	Count Primes in Ranges	738
781	Reach a Number LeetCode Solution	737
782	Maximum Sum of 3 Non-Overlapping Subarrays	737
783	Find Largest d in Array such that a + b + c = d	735
784	Perfect Squares LeetCode Solution	733
785	Maximum subsequence sum such that no three are consecutive	733
786	Number of siblings of a given Node in n-ary Tree	733
787	Rotate Array	731
788	Binary Search Tree Search and Insertion	729
789	Smallest Range II Leetcode Solution	728
790	Find minimum number of merge operations to make an array palindrome	728
791	Find the First Circular Tour that visits all the Petrol Pumps	727
792	Sorted Array to Balanced BST	727
793	Monotonic Array Leetcode Solution	726
794	Count Good Nodes in Binary Tree LeetCode Solution	724
795	Robot Bounded In Circle LeetCode Solution	724
796	Longest Palindromic Subsequence	724
797	Missing Number	724
798	Compare Strings by Frequency of the Smallest Character Leetcode Solution	723
799	Range LCM Queries	722
800	Balanced Binary Tree	722
801	Maximum Frequency Stack Leetcode Solution	718
802	Contiguous Array	718
803	Queries on Probability of Even or Odd Number in given Ranges	718
804	Palindrome Partitioning	718
805	Iterative Postorder Traversal Using Two Stacks	717
806	Topological Sorting	717
807	Sum of f(a[i], a[j]) over all pairs in an array of n integers	716
808	Distinct Subsequences	715
809	Number Of Longest Increasing Subsequence	714
810	BFS vs DFS for Binary Tree	714
811	Merging Intervals	711
812	Reorganize String	711
813	Binary Tree Inorder Traversal LeetCode Solution	710
814	Shuffle a given Array	710
815	Contains Duplicate LeetCode Solution	708
816	Happy Number	708
817	Deletion in a Binary Tree	708
818	Largest subarray with equal number of 0s and 1s	707
819	Binary Search Tree Delete Operation	706
820	Shortest Path in a Grid with Obstacles Elimination LeetCode Solution	705
821	Binary Tree Right Side View LeetCode Solution	700
822	Averages of Levels in Binary Tree	700
823	Find the node with minimum value in a Binary Search Tree	697
824	Print All Distinct Elements of a Given Integer Array	696
825	High Five LeetCode Solution	694
826	Super Ugly Number	694
827	Fibonacci Number LeetCode Solution	693
828	Paint House LeetCode Solution	693
829	Check if an Array is Stack Sortable	692
830	First Bad Version	692
831	Rearrange an array such that ‘arr[j]’ becomes ‘i’ if ‘arr[i]’ is ‘j’	689
832	Find Minimum In Rotated Sorted Array	688
833	Insert Delete GetRandom	688
834	Level of Each node in a Tree from source node	687
835	Employee Importance LeetCode Solution	686
836	Maximum Product Subarray	685
837	Red-Black Tree Introduction	684
838	Guess The Word	684
839	Numbers with prime frequencies greater than or equal to k	683
840	Minimum Size Subarray Sum	683
841	Check if a given array can represent Preorder Traversal of Binary Search Tree	681
842	Lowest Common Ancestor	681
843	Range Sum Query using Sparse Table	679
844	Binary array after M range toggle operations	677
845	Find K Closest Elements LeetCode Solution	676
846	Nested List Weight Sum II LeetCode Solution	676
847	Minimum Cost to Move Chips to The Same Position LeetCode Solution	676
848	Find pairs with given sum such that elements of pair are in different rows	676
849	Integer to Roman	676
850	Maximum Number of Ways to Partition an Array LeetCode Solution	673
851	Print n terms of Newman-Conway Sequence	671
852	Sliding Window Maximum	671
853	Newman-Conway Sequence	666
854	Binary Tree to Binary Search Tree Conversion	666
855	Print Next Greater Number of Q queries	666
856	Third Maximum Number Leetcode Solution	665
857	Longest Increasing Consecutive Subsequence	665
858	Find the smallest binary digit multiple of given number	663
859	K’th Largest Element in BST when modification to BST is not allowed	663
860	Collect maximum points in a grid using two traversals	663
861	Reservoir Sampling	663
862	Find Sum of all unique sub-array sum for a given array	662
863	Sort Array by Increasing Frequency Leetcode Solution	658
864	Reverse a Path in BST using Queue	658
865	Best Time to Buy and Sell Stock IV LeetCode Solution	657
866	Design Skiplist LeetCode Solution	657
867	Filter Restaurants by Vegan-Friendly, Price and Distance Leetcode Solution	656
868	Arrange given numbers to form the biggest number	656
869	Binary Tree Longest Consecutive Sequence LeetCode Solution	650
870	A program to check if a binary tree is BST or not	650
871	Maximize Elements Using Another Array	649
872	Transform a BST to Greater sum Tree	649
873	Search in Sorted Rotated Array	649
874	Largest divisible pairs subset	648
875	Unique Binary Search Trees LeetCode Solution	647
876	Print Right View of a Binary Tree	647
877	Longest Bitonic Subsequence	644
878	Minimum Swaps to Group All 1’s Together Leetcode Solution	642
879	Find Smallest Range Containing Elements from k Lists	641
880	Friends Of Appropriate Ages LeetCode Solution	640
881	Height of a generic tree from parent array	640
882	Swap Nodes In Pairs	640
883	Level Order Traversal of Binary Tree	639
884	Range Sum Query 2D – Immutable LeetCode Solution	638
885	Diagonal Traversal of Binary Tree	638
886	Check Completeness of a Binary Tree LeetCode Solution	635
887	Palindrome Permutation LeetCode Solution	634
888	Edit Distance	634
889	Next greater element	634
890	Convert BST into a Min-Heap without using array	633
891	Minimum insertions to form a palindrome with permutations allowed	630
892	Delete Nodes and Return Forest Leetcode Solution	628
893	Moving Stones Until Consecutive Leetcode Solution	628
894	Valid Triangle Number LeetCode Solution	627
895	Merge Sorted Array	627
896	Kill Process LeetCode Solution	622
897	Check for Palindrome after every character replacement Query	618
898	Minimum sum of squares of character counts in a given string after removing k characters	618
899	Maximum difference between frequency of two elements such that element having greater frequency is also greater	617
900	Find Maximum Depth of Nested Parenthesis in a String	615
901	Find unique character in a string	615
902	Longest Substring Without Repeating Characters Leetcode Solution	611
903	Flatten 2D Vector LeetCode Solution	610
904	Power of Two	610
905	Queries on XOR of greatest odd divisor of the range	609
906	Diameter of N-Ary Tree LeetCode Solution	606
907	Find postorder traversal of BST from preorder traversal	606
908	Maximum Product Subarray	606
909	Friends Pairing Problem	605
910	Priority Queue	602
911	Construct Complete Binary Tree from its Linked List Representation	601
912	Range Minimum Query (Square Root Decomposition and Sparse Table)	600
913	Bottom View of a Binary Tree	600
914	Form Minimum Number From Given Sequence	599
915	Contiguous Array LeetCode Solution	598
916	Maximum weight transformation of a given string	598
917	Dividing Array into Pairs With Sum Divisible by K	598
918	Merge two BSTs with limited extra space	597
919	All Possible Full Binary Trees LeetCode Solution	596
920	Queries for Number of Distinct Elements in a Subarray	596
921	Maximum number of segments of lengths a, b and c	596
922	Regular Expression Matching	596
923	Binary Search Tree	595
924	Maximum Array from Two given Arrays Keeping Order Same	593
925	Serialize and Deserialize Binary Tree	593
926	Valid Perfect Square LeetCode Solution	592
927	K Empty Slots	592
928	Check if all levels of two Binary Tree are anagrams or not	590
929	Maximum Population Year LeetCode Solution	588
930	Closest Binary Search Tree Value Leetcode Solution	588
931	Array Nesting Leetcode Solution	588
932	Print modified array after multiple array range increment operations	587
933	Parallel Courses II LeetCode Solution	586
934	Count and Toggle Queries on a Binary Array	585
935	Design Add and Search Words Data Structure LeetCode Solution	584
936	Write Code to Determine if Two Trees are Identical	584
937	Minimum Remove to Make Valid Parentheses LeetCode Solution	583
938	Isomorphic Strings LeetCode Solution	581
939	Next Greater Element II LeetCode Solution	580
940	Defanging an IP Address LeetCode Solution	579
941	Largest Submatrix With Rearrangements LeetCode Solution	578
942	Find k-th smallest element in BST (Order Statistics in BST)	578
943	Implement strStr() LeetCode Solution	576
944	Maximum Sum Increasing Subsequence	576
945	Kth Smallest Element in a Sorted Matrix LeetCode Solution	575
946	Arithmetic Slices II – Subsequence LeetCode Solution	575
947	K’th Largest element in BST using constant extra space	575
948	Merge Sort	575
949	Search an Element in Sorted Rotated Array	574
950	Valid Tic-Tac-Toe State LeetCode Solution	572
951	Check if X can give change to every person in the Queue	571
952	Find maximum average subarray of k length	567
953	Unique Paths II	566
954	Array Queries for multiply replacements and product	565
955	Peak Index in a Mountain Array LeetCode Solution	564
956	Score of Parenthesis LeetCode Solution	563
957	Bold Words in String LeetCode Solution	561
958	Clone a Binary Tree with Random Pointers	561
959	Print Ancestors of a Given Binary Tree Node Without Recursion	560
960	Lowest Common Ancestor in Binary Search Tree	557
961	Maximum Binary Tree	556
962	Valid Triangle Number LeetCode Solution	554
963	Maximum Depth Of Binary Tree	552
964	Range Queries for Longest Correct Bracket Subsequence	551
965	Trapping Rain Water II LeetCode Solution	550
966	Orderly Queue LeetCode Solution	550
967	Count even length binary sequences with same sum of first and second half bits	550
968	Segment Tree	549
969	Convert a BST to a Binary Tree such that sum of all greater keys is added to every key	548
970	Kth Smallest Element in a BST	548
971	Flatten Binary Tree to Linked List LeetCode Solution	544
972	Largest BST Subtree LeetCode Solution	542
973	Cutting a Rod	539
974	Factorial Trailing Zeroes LeetCode Solution	537
975	Step-By-Step Directions From a Binary Tree Node to Another LeetCode Solution	532
976	Random Pick Index LeetCode Solution	532
977	Maximum Side Length of a Square with Sum Less than or Equal to Threshold LeetCode Solution	531
978	Constant time range add operation on an array	531
979	Insert into a Sorted Circular Linked List LeetCode Solution	530
980	Palindrome Partitioning	530
981	Data Structure Designing	529
982	Count Pairs Whose Products Exist in Array	528
983	Construct Binary Tree from Preorder and Postorder Traversal LeetCode Solution	526
984	Koko Eating Bananas LeetCode Solution	526
985	Form minimum number from given sequence	525
986	Number of elements less than or equal to a given number in a given subarray	523
987	The Number of Weak Characters in the Game LeetCode Solution	522
988	Shortest Unsorted Continuous Subarray LeetCode Solution	522
989	Largest Plus Sign Leetcode Solution	522
990	Symmetric Tree LeetCode Solution Leetcode Solution	522
991	Iterative method to find ancestors of a given binary tree	519
992	Kth Smallest Number in Multiplication Table Leetcode Solution	518
993	Graph Cloning	518
994	Check given array of size n can represent BST of n levels or not	515
995	Champagne Tower LeetCode Solution	511
996	Check if each internal node of a BST has exactly one child	511
997	Minimum Number of Arrows to Burst Balloons LeetCode Solution	507
998	Queries for Decimal Values of Subarrays of a Binary Array	507
999	Minimum Moves to Equal Array Elements LeetCode Solution	504
1000	Write a function to get the intersection point of two Linked Lists	504
1001	Kth Smallest Product of Two Sorted Arrays LeetCode Solution	503
1002	Encoded String With Shortest Length LeetCode Solution	502
1003	Swim in Rising Water LeetCode Solution	497
1004	Closest Leaf in a Binary Tree LeetCode Solution	496
1005	Greatest Sum Divisible by Three LeetCode Solution	493
1006	Stone Game IV LeetCode Solution	492
1007	Minimum Possible Integer After at Most K Adjacent Swaps On Digits LeetCode Solution	489
1008	Excel Sheet Column Number LeetCode Solution	484
1009	Best Meeting Point LeetCode Solution	483
1010	Minimum Swaps To Make Sequences Increasing LeetCode Solution	482
1011	Sum of Left Leaves LeetCode Solution	480
1012	Binary Tree to Binary Search Tree Conversion using STL set	478
1013	Total Hamming Distance LeetCode Solution	473
1014	Image Overlap LeetCode Solution	469
1015	How to print maximum number of A’s using given four keys	460
1016	Excel Sheet Column Title LeetCode Solution	453
1017	Print Maximum Length Chain of Pairs	446
1018	Number of Orders in the Backlog Leetcode Solution	444
1019	Group Shifted Strings Leetcode Solution	441
1020	Next Greater Element I Leetcode Solution	434
1021	Decrease Elements To Make Array Zigzag LeetCode Solution	426
1022	Stone Game IV LeetCode Solution	424
1023	Find the Town Judge LeetCode Solution	414
1024	Closest Binary Search Tree Value II LeetCode Solution	411
1025	Design Underground System Leetcode Solution	406
1026	Sentence Screen Fitting LeetCode Solution	403
1027	Find Two Non-overlapping Sub-arrays Each With Target Sum LeetCode Solution	400
1028	Minimum Number of Operations to Move All Balls to Each Box LeetCode Solution	398
1029	Insert Delete GetRandom O(1) – Duplicates allowed LeetCode Solution	374
1030	Peeking Iterator LeetCode Solution	367
1031	Flatten Binary Tree to Linked List LeetCode Solution	271