🧩 LeetCode Solutions in Java

Sharpening problem-solving skills one problem at a time!

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Live LeetCode Stats

LeetCode Topics

Array

Problem Name	Difficulty
0039-combination-sum	Medium
0078-subsets	Medium
0494-target-sum	Medium
0916-word-subsets	Medium

Backtracking

Problem Name	Difficulty
0039-combination-sum	Medium
0078-subsets	Medium
0494-target-sum	Medium

Bit Manipulation

Problem Name	Difficulty
0078-subsets	Medium

Hash Table

Problem Name	Difficulty
0916-word-subsets	Medium

String

Problem Name	Difficulty
0916-word-subsets	Medium
1784-check-if-binary-string-has-at-most-one-segment-of-ones	Easy

Dynamic Programming

Problem Name	Difficulty
0494-target-sum	Medium

Linked List

Problem Name	Difficulty
0019-remove-nth-node-from-end-of-list	Medium
0024-swap-nodes-in-pairs	Medium
0082-remove-duplicates-from-sorted-list-ii	Medium
0083-remove-duplicates-from-sorted-list	Easy
0237-delete-node-in-a-linked-list	Medium
2095-delete-the-middle-node-of-a-linked-list	Medium

Two Pointers

Problem Name	Difficulty
0019-remove-nth-node-from-end-of-list	Medium
0082-remove-duplicates-from-sorted-list-ii	Medium
2095-delete-the-middle-node-of-a-linked-list	Medium

Recursion

Problem Name	Difficulty
0024-swap-nodes-in-pairs	Medium

Database

Problem Name	Difficulty
0584-find-customer-referee	Easy
0595-big-countries	Easy
1683-invalid-tweets	Easy
1757-recyclable-and-low-fat-products	Easy