Leetcode Problems Solutions

Why this repository?

This is mostly for my personal learning and future references, and if anyone needs help with a certain problem.

"Try the problem yourself first, then only proceed to the solution. BE FAITHFUL TO YOUR WORK."

If found helpful please press a ⭐.

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INDEX

Algorithms

#ID	ProblemStatement	Solutionjava	Solutionjs	Difficulty
1	Two Sum	Solution.java	Solution.js	Easy
2	Add Two Numbers	Solution.java		Medium
3	Longest Substring Without Repeating Characters	Solution.java	Solution.js	Medium
7	Reverse Integer	Solution.java	Solution.js	Easy
9	Palindrome Number	Solution.java	Solution.js	Easy
13	Roman to Integer	Solution.java	Solution.js	Easy
14	Longest Common Prefix	Solution.java	Solution.js	Easy
19	Remove Nth Node From End of List	Solution.java	Solution.js	Medium
20	Valid Parentheses	Solution.java	Solution.js	Easy
21	Merge Two Sorted Lists	Solution.java	Solution.js	Easy
27	Remove Element	Solution.java	Solution.js	Easy
28	Implement strStr()	Solution.java	Solution.js	Easy
33	Search in Rotated Sorted Array	Solution.java		Medium
35	Search Insert Position	Solution.java	Solution.js	Easy
38	Count and Say	Solution.java		Easy
49	Group Anagrams	Solution.java		Medium
50	Pow(x,n)	Solution.java	Solution.js	Medium
53	Maximum Subarray	Solution.java	Solution.js	Easy
55	Jump Game	Solution.java	Solution.js	Medium
58	Length of Last Word	Solution.java	Solution.js	Easy
60	Permutation Sequence	Solution.java		Hard
64	Minimum Path Sum	Solution.java	Solution.js	Medium
66	Plus One	Solution.java	Solution.js	Easy
67	Add Binary	Solution.java	Solution.js	Easy
69	Sqrt(x)	Solution.java	Solution.js	Easy
70	Climbing Stairs	Solution.java	Solution.js	Easy
72	Edit Distance	Solution.java		Hard
75	Sort Colors	Solution.java	Solution.js	Medium
100	Same Tree	Solution.java	Solution.js	Easy
103	Binary Tree Zigzag Level Order Traversal	Solution.java		Medium
104	Maximum Depth of Binary Tree	Solution.java	Solution.js	Easy
106	Construct Binary Tree from Inorder and Postorder Traversal	Solution.java	Solution.js	Medium
107	Binary Tree Level Order Traversal II	Solution.java		Easy
122	Best Time to Buy and Sell Stock II	Solution.java	Solution.js	Easy
125	Valid Palindrome	Solution.java	Solution.js	Easy
129	Sum Root to Leaf Numbers	Solution.java	Solution.js	Medium
130	Surrounded Regions	Solution.java	Solution.js	Medium
136	Single Number	Solution.java	Solution.js	Easy
137	Single Number II	Solution.java	Solution.js	Medium
151	Reverse Words in a String		Solution.js	Medium
154	Find Minimum in Rotated Sorted Array II	Solution.java	Solution.js	Hard
155	Min Stack	Solution.java		Easy
169	Majority Element	Solution.java	Solution.js	Easy
171	Excel Sheet Column Number	Solution.java	Solution.js	Easy
172	Factorial Trailing Zeroes	Solution.java	Solution.js	Easy
189	Rotate Array	Solution.java	Solution.js	Easy
190	Reverse Bits	Solution.java	Solution.js	Easy
200	Number of Islands	Solution.java		Medium
202	Happy Number	Solution.java	Solution.js	Easy
203	Remove Linked List Elements	Solution.java	Solution.js	Easy
206	Reverse Linked List	Solution.java	Solution.js	Easy
207	Course Schedule	Solution.java		Medium
208	Implement Trie (Prefix Tree)	Solution.java		Medium
217	Contains Duplicate	Solution.java	Solution.js	Easy
221	Maximal Square	Solution.java	Solution.js	Medium
222	Count Complete Tree Nodes	Solution.java	Solution.js	Medium
226	Invert Binary Tree	Solution.java	Solution.js	Easy
230	Kth Smallest Element in a BST	Solution.java	Solution.js	Medium
231	Power of Two	Solution.java	Solution.js	Easy
237	Delete Node in a Linked List	Solution.java	Solution.js	Easy
238	Product of Array Except Self	Solution.java	Solution.js	Medium
258	Add Digits	Solution.java	Solution.js	Easy
260	Single Number III	Solution.java	Solution.js	Medium
264	Ugly Number II	Solution.java	Solution.js	Medium
1344	Angle Between Hands of a Clock	Solution.java	Solution.js	Medium

Author

Anmol Agrawal

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"Any suggestions would be appreciated"