Whenever you want to give up, remember the young boy who waked up to pursue his dream.

To compile each src code

• C++ : g++ -std=c++17 src/1250_Check_If_It_Is_a_Good_Array/main.cpp
• Python : python3 src/700_Search_in_a_Binary_Search_Tree/main.py
• java : javac src/376_Wiggle_Subsequence/Main.java
• javascript : node --use_strict src/809_Expressive_Words/main.js
• go : go run src/226_Invert_Binary_Tree/main.go

#	Title	c++	python	go	js	java	Difficulty
1	Two Sum		python				Easy
2	Add Two Numbers		python				Medium
3	$Longest Substring Without Repeating Characters		python				Medium
4	Median of Two Sorted Arrays	c++				java	Hard
5	Longest Palindromic Substring		python				Medium
7	Reverse Integer					java	Easy
10	Regular Expression Matching		python				Hard
11	$Container with Most Water	c++					Medium
15	$3Sum	c++					Medium
20	Valid Parentheses		python				Easy
22	Generate Parentheses		python				Medium
23	Merge K Sorted Array	c++					Hard
24	$Swap Nodes in Pairs	c++					Medium
25	$Reverse Nodes in k-Group	c++	python				Hard
26	Remove Duplicates from Sorted Array		python				Easy
27	Remove Element		python				Easy
33	$Search in Rotated Sorted Array	c++					Medium
34	Find First and Last Position of Element in Sorted Array	c++				java	Medium
35	$Search Insert Position	c++					Easy
37	Sudoku Solver	c++					Hard
42	Trapping Rain Water		python				Hard
43	Multiply Strings		python				Medium
45	$Jump Game		python				Medium
46	$Permutations		python				Medium
48	Rotate Image	c++					Medium
51	N-Queues	c++					Hard
52	$N-Queues II		python				Hard
53	$Maximum Subarray		python				Easy
54	Spiral Matrix	c++					Medium
55	Jump Game		python				Medium
56	Merge Intervals	c++					Medium
60	$Permutation Sequence	c++					Hard
64	$Minimum Path Sum	c++	python				Medium
69	$Sqrt(x)	c++					Easy
70	Climbing Stairs		python				Easy
72	$Edit Distance	c++	python				Hard
74	$Search a 2D Matrix	c++					Medium
75	$Sort Colors		python				Medium
76	Minimum Window Substring	c++					Hard
77	$Combinations		python				Medium
78	Subsets	c++	python				Medium
81	Search in Rotated Sorted Array II	c++					Medium
82	Remove Duplicates from Sorted List II	c++					Medium
83	Remove Duplicates from Sorted List		python				Easy
91	$Decode Ways	c++					Medium
92	Reverse Linked List II		python				Medium
93	$Restore IP Addresses						Medium
96	$Unique Binary Search Trees	c++					Medium
98	Valid Binary Search Tree	c++					Medium
105	$Construct Binary Tree from Preorder and Inorder Traversal		python				Medium
111	$Minimum Depth of Binary Tree	c++					Easy
114	$Flatten Binary Tree to Linked List		python				Medium
115	$Distinct Subsequences	c++					Hard
116	$Populating Next Right Pointers in Each Node		python				Medium
121	Best Time to Buy and Sell Stock		python				Easy
122	Best Time to Buy and Sell Stock II	c++	python				Easy
123	$Best Time to Buy and Sell Stock III	c++	python				Hard
132	Parlindrome Partitioning II	c++					Hard
133	$Clone Graph	c++					Medium
135	Candy	c++					Hard
136	Single Number					java	Easy
137	$Single Number II	c++					Medium
143	$Reorder List	c++					Medium
146	LRU Cache	c++					Medium
147	$Insertion Sort List	c++					Medium
148	Sort List		python				Medium
149	Max Points on a Line	c++					Hard
153	Find Minimum in Rotated Sorted Array	c++					Medium
154	Find Minimum in Rotated Sorted Array II	c++					Hard
167	$Two Sum II - Input array is sorted		python				Easy
169	Majority Element	c++					Easy
188	Best Time to Buy and Sell Stock IV	c++					Hard
191	Number of 1 Bits	c++					Easy
198	House Robber	c++	python				Easy
201	$Bitwise AND of Numbers Range	c++					Medium
204	Count Primes		python				Easy
206	Reverse Linked List	c++	python				Easy
208	Implement Trie (Prefix Tree)	c++					Medium
209	Minimum Size Subarray Sum	c++					Medium
212	$Word Search II	c++					Hard
213	House Robber II	c++	python				Medium
214	Shortest Palindrome	c++					Hard
215	$Kth Largest Element in an Array	c++				java	Medium
224	Basic Calculator	c++	python				Hard
225	Implement Stack using Queues	c++					Easy
226	Invert Binary Tree			go			Easy
232	Implement Queue using Stacks	c++					Easy
233	Number of Digit One	c++					Hard
236	Lowest Common Ancestor of a Binary Tree		python				Medium
239	$Sliding Window Maximum	c++	python				Hard
240	$Search a 2D Matrix II	c++					Medium
241	Different Ways to Add Parentheses	c++					Medium
243	$Shortest Word Distance	c++					Easy
256	Paint House	c++					Medium
260	$Single Number III	c++					Medium
263	Ugly Number	c++					Easy
264	$Ugly Number II	c++					Medium
265	$Paint House II	c++					Medium
277	$Find the Celebrity	c++					Medium
278	First Bad Version	c++					Easy
279	Perfect Squares						Medium
282	Expression Add Operators	c++					Hard
283	Move Zeros		python				Easy
292	Nim Game	c++					Easy
294	Flip Game II	c++					Medium
295	Find Median from Data Stream	c++	python				Hard
296	$Best Meeting Point	c++					Hard
297	$Serialize and Deserialize Binary Tree	c++					Hard
300	Longest Increasing Subsequence	c++	python			java	Medium
302	$Smallest Rectangle Enclosing Black Pixels	c++					Hard
307	Range Sum Query - Mutable	c++					Medium
309	Best Time to Buy and Sell Stock with Cooldown	c++					Medium
310	Minimum Height Trees						Medium
311	Sparse Matrix Multiplication	c++					Medium
312	$Burst Balloons		python				Hard
316	$Remove Duplicate Letters						Medium
317	Shortest Distance from All Buildings	c++					Hard
318	$Maximum Product of Word Lengths	c++					Medium
320	$Generalized Abbreviation	c++					Medium
322	Coin Change	c++	python				Medium
323	$Number of Connected Components in an Undirected Graph	c++					Medium
325	Maximum Size Subarray Sum Equals k	c++					Medium
328	Odd Even Linked List	c++					Medium
333	Largest BST Tree	c++					Medium
337	House Robber III		python				Medium
341	$Flatten Nested List Iterator		python				Medium
343	Integer Break	c++					Medium
346	Moving Average from Data Stream	c++					Easy
353	$Design Snake Game	c++					Medium
354	$Russian Doll Envelopes	c++					Hard
358	Rearrange String k Distance Apart	c++					Hard
361	$Bomb Enemy	c++					Medium
362	$Design Hit Counter	c++					Medium
363	Max Sum of Rectangle No larger Than K	c++					Hard
367	$Valid Perfect Square	c++					Easy
372	Super Pow	c++					Medium
376	Wiggle Subsequence	c++				java	Medium
380	$Insert Delete GetRandom O(1)		python				Medium
382	Linked List Random Node	c++					Medium
389	$Find the Difference					java	Easy
391	Perfect Rectangle		python				Hard
392	$Is Subsequence	c++	python				Easy
398	Random Pick Index	c++	python				Medium
401	Binary Watch	c++					Easy
407	Trapping Rain Water II	c++					Hard
408	Valid Word Abbreviation	c++					Easy
409	Longest Palindrome	c++	python				Easy
411	Minimum Unique Word Abbreviation	c++					Hard
413	$Arithmetic Slices	c++					Medium
416	Partition Equal Subset Sum	c++					Medium
418	Sentence Screen Fitting	c++					Medium
419	Battleships in a Board	c++					Medium
424	Longest Repeating Character Replacement	c++					Medium
435	$Non-overlapping Intervals	c++					Medium
438	$Find All Anagrams in a String	c++					Medium
444	Sequence Reconstruction	c++					Medium
446	Arithmetic Slices II - Subsequence	c++					Hard
449	$Serialize and Deserialize BST	c++					Medium
450	$Delete Node in a BST	c++					Medium
452	$Minimum Number of Arrows to Burst Balloons	c++					Medium
454	$4Sum II	c++					Medium
457	Circular Array Loop	c++					Medium
459	$Repeated Substring Pattern	c++					Easy
460	LFU Cache	c++					Hard
464	Can I Win	c++					Medium
468	Validate IP Address	c++					Medium
474	Ones and Zeros						Medium
480	$Sliding Window Median		python				Hard
486	Predict the Winner	c++					Medium
487	$Max Consecutive Ones II	c++					Medium
493	Reverse Pairs	c++					Hard
494	Target Sum		python				Medium
496	$Next Greater Element I	c++	python				Easy
503	Next Greater Element II	c++	python				Medium
516	Longest Palindromic Subsequence		python				Medium
518	$Coin Change 2	c++	python			java	Medium
523	Continuous Subarray Sum	c++					Medium
538	Convert BST to Greater Tree	c++					Medium
540	$Single Element in a Sorted Array	c++					Medium
542	01 Matrix	c++					Medium
556	$Next Greater Element III	c++					Medium
560	Subarray Sum Equals K		python				Medium
562	$Longest Line of Consecutive One in Matrix	c++					Medium
567	Permutation in String	c++					Medium
568	$Maximum Vaccation Days	c++					Hard
572	Subtree of Another Tree	c++					Easy
582	Kill Process						Medium
583	Delete Operation for Two Strings	c++					Medium
588	$Design In-Memory File System	c++					Hard
589	$N-ary Tree Preorder Traversal	c++					Easy
590	$N-ary Tree Postorder Traversal	c++					Easy
629	K Inverse Pairs Array	c++					Hard
635	$Design Log Storage System	c++					Medium
644	$Maximum Average Subarray II	c++	python			java	Hard
645	Set Mismatch	c++					Easy
650	2 Keys Keyboard	c++					Medium
651	4 Keys Keyboard		python				Medum
654	Maximum Binary Tree	c++	python				Medium
658	Find K Closest Elements	c++				java	Medium
662	$Maximum Width of Binary Tree	c++					Medium
676	Implement Magic Dictionary	c++					Medium
698	Partition to K Equal Sum Subsets	c++				java	Medium
700	Search in a Binary Search Tree		python				Easy
701	$Insert into a Binary Search Tree	c++					Medium
707	$Design Linked List	c++					Medium
710	$Random Pick with Blacklist		python				Hard
712	Minimum ASCII Delete Sum for Two Strings		python				Medium
714	Best Time to Buy and Sell Stock with Transaction Fee	c++					Medium
715	Range Module	c++					Hard
716	Max Stack	c++					Easy
725	Split Linked List in Parts	c++					Medium
729	My Calendar I	c++					Medium
731	My Calendar II	c++					Medium
732	My Calendar III	c++					Hard
736	Parse Lisp Expression	c++					Hard
737	$Sentence Similarity II	c++					Medium
739	Daily Temperatures		python				Medium
744	Find Smallest Letter Greater Than Target	c++					Easy
745	Prefix and Suffix Search	c++					Hard
751	IP to CIDR	c++					Medium
752	$Open the lock	c++					Medium
759	$Employee Free Time	c++					Hard
761	$Special Binary String	c++					Hard
765	$Couples Holding Hands	c++					Hard
767	Reorganize String	c++					Medium
768	Max Chunks To Make Sorted II	c++					Hard
769	Max Chunks To Make Sorted	c++					Medium
773	$Sliding Puzzle	c++					Hard
774	$Minimize Max Distance to Gas Station	c++					Hard
777	Swap Adjacent in LR String	c++					Medium
780	$Reaching Points	c++					Hard
788	Rotated Digits	c++					Easy
803	Bricks Falling When Hit	c++					Hard
809	Expressive Words	c++			js		Medium
811	Subdomain Visit Count	c++					Medium
815	Bus Routes	c++					Hard
837	New 21 Game	c++					Medium
875	Koko Eating Bananas	c++					Medium
876	Middle of the Linked List	c++					Easy
877	Stone Game	c++					Medium
887	Super Egg Drop	c++	python				Hard
946	Validate Stack Sequences	c++					Medium
969	Pancake Sorting		python				Medium
981	Time Based Key-Value Store	c++					Medium
986	Interval List Intersections		python				Medium
990	Satisfiability of Equality Equations	c++					Medium
998	Maximum Binary Tree II	c++					Medium
1011	Capacity To Ship Packages Within D Days		python				Medium
1019	Next Greater Node in Linked List	c++					Medium
1025	Divisor Game	c++					Easy
1041	$Robot Bounded in Circle	c++					Medium
1059	$All Paths from Source Lead to Destination		python				Medium
1109	Corporate Flight Bookings	c++					Medium
1140	Stone Game II		python				Medium
1143	Longest Common Subsequence	c++	python				Medium
1201	Ugly Number III	c++					Medium
1209	$Remove All Adjacent Duplicates in String II	c++					Medium
1245	$Tree Diameter	c++					Medium
1250	Check If It Is a Good Array	c++					Hard
1288	$Remove Covered Intervals	c++					Medium
1301	Number of Paths with Max Score						Hard
1339	$Maximum Product of Splitted Binary Tree						Medium
1359	Count All Valid Pickup and Delivery Options	c++					Hard
1367	Linked List in Binary Tree	c++	python				Medium
1396	$Design Underground System	c++					Medium
1414	Find the Minimum Number of Fibonacci Numbers Whose Sum Is K	c++					Medium
1423	Maximum Points You Can Obtain from Cards	c++					Medium
1438	Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit	c++					Medium
1462	Course Schedule IV						Medium
1473	Paint House III	c++					Hard
1488	Avoid Flood in The City	c++					Medium
1512	Number of Good Pairs	c++					Easy
1530	Number of Good Leaf Nodes Pairs						Medium
1531	String Compression II	c++					Hard
1564	Put Boxes into the Warehouse I	c++					Medium
1580	Put Boxes into the Warehouse II	c++					Medium
1594	Maximum Non Negative Product in a Matrix	c++					Medium
1644	Lowest Common Ancestor of a Binary Tree II		python				Medium
1666	Change the Root of a Binary Tree	c++					Medium
1696	$Jump Game VI		python				Medium