LeetCode Practise

Elegant solutions to LeetCode challenges in Java and Kotlin, thoughtfully crafted with a focus on readability consistent style, and adherence to modern standards across diverse topics. This repository is complemented by in-depth Medium blogs, offering comprehensive explanations for each solution

👇 Overview

LeetCode is the best platform to help you enhance your skills, expand your knowledge and prepare for technical interviews.

LeetCode: https://leetcode.com/nphausg

Medium: https://medium.com/@nphausg

💎 Challenges

🔥 Easy

Challenge	Level	Java	Kotlin	Medium
0001. Two sum	🔥	Solution	Solution	Medium
0020. ValidParentheses	🔥	Solution	-	-
0026. Remove Duplicates	🔥	Solution	-	-
0027. Remove Element	🔥	Solution	-	-
0125. Valid Palindrome	🔥	Solution	-	-
0118. Pascal's Triangle	🔥	Solution	-	-
0121. Best time to buy and sell stock	🔥	Solution	Solution	Medium
0136. Single Number	🔥	Solution	-	-
0217. Contains Duplicate	🔥	Solution	-	Medium
0242. Valid Anagram	🔥	Solution	-	Medium
0268. Missing Number	🔥	-	-	Medium
0387. First Unique Character in a String	🔥	Solution	-	Medium
0389. Find the Difference	🔥	Solution	-	Medium
0409. Longest Palindrome	🔥	Solution	-	Medium
0495. Teemo Attacking	🔥	Solution	-	Medium
0509. Fibonacci Number	🔥	Solution	-	Medium
0594. Longest Harmonious Subsequence	🔥	Solution	-	Medium
0605. Can Place Flowers	🔥	Solution	-	Medium
0704. Binary Search	🔥	Solution	-	Medium
1137. N-th Tribonacci Number	🔥	Solution	-	Medium
1351. Count Negative Numbers in a Sorted Matrix	🔥	Solution	-	Medium
1929. Concatenation Of Array	🔥	Solution	-	-
2273. Find Resultant Array After Removing Anagrams	🔥	Solution	-	-
2351. First Letter to Appear Twice	🔥	Solution	-	Medium
2529. Maximum Count of Positive Integer and Negative Integer	🔥	Solution	-	Medium
2824. Count Pairs Whose Sum is Less than Target	🔥	Solution	-	-
2848. Points That Intersect With Cars	🔥	Solution	-	-

🔥🔥 Medium

Challenge	Level	Java	Kotlin	Medium
0017. Letter Combinations of a Phone Number	🔥🔥	Solution	-	-
0039. Combination Sum	🔥🔥	Solution	-	-
0046. Permutations	🔥🔥	Solution	-	-
0049. Group Anagrams	🔥🔥	Solution	-	-
0053. Maximum Subarray	🔥🔥	Solution	-	-
0056. Merge Intervals	🔥🔥	Solution	-	-
0062. Unique Paths	🔥🔥	Solution	-	-
0063. Unique Paths II	🔥🔥	Solution	-	-
0064. Minimum Path Sum	🔥🔥	Solution	-	-
0091. Decode Ways	🔥🔥	Solution	-	-
0102. Binary Tree Level Order Traversal	🔥🔥	Solution	-	-
0122. Best Time to Buy and Sell Stock II	🔥🔥	Solution	-	-
0137. Single Number II	🔥🔥	Solution	-	-
0198. House Robber	🔥🔥	Solution	-	-
0219. Contains Duplicate II	🔥🔥	Solution	-	Medium
0238. Product of Array Except Self	🔥🔥	Solution	-	Medium
0260. Single Number III	🔥🔥	Solution	-	-
0438. Find All Anagrams in a String	🔥🔥	Solution	-	-
0567. Permutation in String	🔥🔥	Solution	-	Medium
0658. Find K Closest Elements	🔥🔥	Solution	-	-
0714. Best Time to Buy and Sell Stock with Transaction Fee	🔥🔥	Solution	-	Medium
0729. My Calendar I	🔥🔥	Solution	-	Medium
1017. Convert to Base -2	🔥🔥	Solution	-	Medium
1143. Longest Common Subsequence	🔥🔥	Solution	-	-
3169. Count Days Without Meetings	🔥🔥	Solution	-	-

🔥🔥🔥 Hard

Challenge	Level	Java	Kotlin	Medium
0041. First Missing Positive	🔥🔥🔥	Solution	Solution	Medium
0220. Contains Duplicate III	🔥🔥🔥	Solution	-	Medium

👇 Author