🚀 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% |
