Curated Interview Problems

DSA Problems

Master Data Structures & Algorithms with curated problems, multi-language solutions, and an integrated code playground.

22Total
9Easy
13Medium
0Hard
View Roadmap
📊

Arrays & Hashing

7 problems
3 Easy4 Med0 Hard
#1Two Sum
Easy
#217Contains Duplicate
Easy
#242Valid Anagram
Easy
#49Group Anagrams
Medium
#347Top K Frequent Elements
Medium
#238Product of Array Except Self
Medium
#128Longest Consecutive Sequence
Medium
👆

Two Pointers

3 problems
1 Easy2 Med0 Hard
#125Valid Palindrome
Easy
#153Sum
Medium
#11Container With Most Water
Medium
🪟

Sliding Window

2 problems
1 Easy1 Med0 Hard
#121Best Time to Buy and Sell Stock
Easy
#3Longest Substring Without Repeating Characters
Medium
📚

Stack

2 problems
1 Easy1 Med0 Hard
#20Valid Parentheses
Easy
#155Min Stack
Medium
🔍

Binary Search

2 problems
1 Easy1 Med0 Hard
#704Binary Search
Easy
#33Search in Rotated Sorted Array
Medium
🔗

Linked List

1 problems
1 Easy0 Med0 Hard
#206Reverse Linked List
Easy
🧩

Dynamic Programming

4 problems
1 Easy3 Med0 Hard
#70Climbing Stairs
Easy
#53Maximum Subarray
Medium
#198House Robber
Medium
#322Coin Change
Medium
📏

Intervals

1 problems
0 Easy1 Med0 Hard
#56Merge Intervals
Medium