🚀 Problems from LeetCode solved in order to gain experience in languages such as JavaScript, C, Java, PL/SQL, and to consolidate my knowledge of data structures and programming techniques such as Array, Linked List, Binary Search, Backtracking, Stack, Tree, DFS, BFS, Graph, Trie, Recursion, Queue, Sliding Window, etc.

ID	Title	Solution	Acceptance rate
1	Two Sum	C, Java, JavaScript	50.5%
2	Add Two Numbers	C	41.8%
3	Longest Substring Without Repeating Characters	JavaScript	34.3%
4	Median of Two Sorted Arrays	JavaScript	38.8%
5	Longest Palindromic Substring	JavaScript	33.4%
6	Zigzag Conversion	JavaScript	46.7%
7	Reverse Integer	Java, JavaScript	27.8%
8	String to Integer (atoi)	C, JavaScript	16.7%
9	Palindrome Number	Java, JavaScript	54.3%
10	Regular Expression Matching	Java, JavaScript	27.9%
11	Container With Most Water	C, Java, JavaScript	54.1%
12	Integer to Roman	JavaScript	63.8%
13	Roman to Integer	JavaScript	60.2%
14	Longest Common Prefix	JavaScript	42.0%
15	3Sum	JavaScript	34.9%
17	Letter Combinations of a Phone Number	JavaScript	59.5%
19	Remove Nth Node From End of List	Java	42.3%
20	Valid Parenthesis	C, JavaScript	40.2%
21	Merge Two Sorted Lists	Java	63.1%
23	Merge k Sorted Lists	C	51.6%
24	Swap Nodes in Pairs	C, JavaScript	64.8%
25	Reverse Nodes in k-Group	Java, JavaScript	60.0%
26	Remove Duplicates from Sorted Array	Java, JavaScript	52.9%
27	Remove Element	Java, JavaScript	54.4%
28	Find the Index of the First Occurrence in a String	C, Java	40.3%
29	Divide Two Integers	Java, JavaScript	17.1%
35	Search Insert Position	JavaScript	46.6%
36	Valid Sudoku	Java	58.6%
37	Sudoku Solver	Java	59.1%
38	Count and Say	JavaScript	53.9%
41	First Missing Positive	JavaScript	37.6%
42	Trapping Rain Water	Java, JavaScript	60.2%
43	Multiply Strings	Java	40.8%
48	Rotate Image	C, JavaScript	72.4%
50	Pow(x, n)	C, Java, JavaScript	34.0%
52	N-Queens II	C, Java, JavaScript	72.5%
58	Length of Last Word	Java	45.7%
61	Rotate List	C	37.1%
62	Unique Paths	Java, JavaScript	63.6%
64	Minimum Path Sum	Java, JavaScript	62.8%
66	Plus One	Java	44.1%
67	Add Binary	Java, Python3	52.6%
69	Sqrt(x)	Java, JavaScript, PHP	37.8%
70	Climbing Stairs	Java	53.1%
71	Simplify Path	JavaScript	41.4%
94	Binary Tree Inorder Traversal	Java	74.7%
100	Same Tree	C, Dart, JavaScript	59.4%
104	Maximum Depth of Binary Tree	C, Java	74.4%
112	Path Sum	C, JavaScript	49.6%
118	Pascal's Triangle	Java	72.5%
125	Valid Palindrome	JavaScript	46.4%
136	Single Number	Java, JavaScript	71.5%
141	Linked List Cycle	C, Java, JavaScript	48.6%
145	Binary Tree Postorder Traversal	Java	73.2%
155	Min Stack	Java	52.9%
160	Intersection of Two Linked Lists	Java	55.7%
176	Second Highest Salary	PL/SQL	38.8%
189	Rotate Array	C	39.8%
190	Reverse Bits	C, C++, Java, JavaScript	57.1%
191	Number of 1 Bits	C, Java	69.9%
193	Valid Phone Numbers	Bash	25.8%
194	Transpose File	Bash	25.7%
195	Tenth Line	Bash	32.9%
200	Number of Islands	Java	57.7%
206	Reverse Linked List	C, JavaScript	74.6%
215	Kth Largest Element in an Array	Java, JavaScript	67.2%
217	Contains Duplicate	C, Java, JavaScript	61.0%
226	Invert Binary Tree	C, JavaScript	77.5%
231	Power of Two	C, JavaScript	46.3%
232	Implement Queue using Stacks	Java	65.7%
238	Product of Array Except Self	Java, JavaScript	65.0%
242	Valid Anagram	Java	63.2%
268	Missing Number	JavaScript	65.1%
273	Integer to English Words	JavaScript	30.5%
300	Longest Increasing Subsequence	JavaScript	53.6%
338	Counting Bits	C, JavaScript	77.4%
342	Power of Four	C	47.7%
344	Reverse String	JavaScript	77.2%
383	Ransom Note	JavaScript	59.3%
405	Convert a Number to Hexadecimal	JavaScript	47.8%
414	Third Maximum Number	JavaScript	34.5%
442	Find All Duplicates in an Array	JavaScript	75.5%
455	Assign Cookies	JavaScript	49.7%
476	Number Complement	Java	70.2%
590	N-ary Tree Postorder Traversal	Java	80.0%
592	Fraction Addition and Subtraction	Java	61.1%
633	Sum of Square Numbers	JavaScript	36.2%
661	Image Smoother	JavaScript	66.8%
674	Longest Continuous Increasing Subsequence	JavaScript	49.7%
725	Split Linked List in Parts	Java	68.1%
844	Backspace String Compare	JavaScript	49.1%
856	Score of Parenthesis	Java	64.4%
876	Middle of the Linked List	C, JavaScript	76.5%
922	Sort Array By Parity II	JavaScript	70.7%
1002	Find Common Characters	JavaScript	73.1%
1009	Complement of Base 10 Integer	Java	60.7%
1021	Remove Outermost Parentheses	JavaScript	81.9%
1148	Article Views I	PL/SQL	74.8%
1207	Unique Number of Occurrences	JavaScript	76.5%
1578	Minimum Time to Make Rope Colorful	JavaScript	63.2%
1903	Largest Odd Number in String	JavaScript	63.6%
1945	Sum of Digits of String After Convert	Java	74.7%
1971	Find if Path Exists in Graph	Java, JavaScript	53.0%
2053	Kth Distinct String in an Array	Java	80.2%
2124	Check if All A's Appears Before All B's	Java, JavaScript, PHP	71.3%
2235	Add Two Integers	JavaScript, Swift	87.5%
2356	Number of Unique Subjects Taught by Each Teacher	MySQL	87.5%
2418	Sort the People	JavaScript	84.9%
2419	Longest Subarray With Maximum Bitwise AND	Java, JavaScript	58.5%
2452	Words Within Two Edits of Dictionary	Java	60.3%
2469	Convert the Temperature	Java	88.7%
2591	Distribute Money to Maximum Children	Java	18.7%
2618	Check if Object Instance of Class	JavaScript	29.2%
2620	Counter	JavaScript	80.3%
2621	Sleep	JavaScript	85.1%
2634	Filter Elements from Array	JavaScript	83.3%
2666	Allow One Function Call	JavaScript	86.0%
2667	Create Hello World Function	JavaScript	80.2%
2695	Array Wrapper	JavaScript	87.6%
2703	Return Length of Arguments Passed	JavaScript	92.7%
2704	To Be Or Not To Be	JavaScript	61.5%
2706	Buy Two Chocolates	JavaScript, PHP	70.6%
2715	Timeout Cancellation	JavaScript	87.1%
2723	Add Two Promises	JavaScript	90.1%
2724	Sort By	JavaScript	81.6%
2727	Is Object Empty	JavaScript	77.7%
2798	Number of Employees Who Met the Target	JavaScript	87.5%
2816	Double a Number Represented as a Linked List	C	47.6%
2828	Check if a String Is an Acronym of Words	JavaScript	83.3%
2833	Furthest Point From Origin	Java, JavaScript	61.9%
2870	Minimum Number of Operations to Make Array Empty	Java	49.4%
2879	Display the First Three Rows	Pandas (Python)	92.1%
3019	Number of Changing Keys	Java, JavaScript	79.3%