Dashboard Questions Topics Companies Sheets

Data Structures & Algorithms

Practice 3,374+ coding problems from top companies. Master DSA concepts and ace your interviews.

3,374

Problems

840

Easy

1762

Medium

772

Hard

Difficulty

All3374 Easy840 Medium1762 Hard772

Title	Solve	Difficulty	Companies	Topics
3174. Clear Digits	Solve	Easy	-	Simulation Stack+1
3178. Find the Child Who Has the Ball After K Seconds	Solve	Easy	-	Math Simulation
3184. Count Pairs That Form a Complete Day I	Solve	Easy	-	Array Counting+1
3190. Find Minimum Operations to Make All Elements Divisible by Three	Solve	Easy	-	Array Math
3194. Minimum Average of Smallest and Largest Elements	Solve	Easy	-	Array Sorting+1
3198. Find Cities in Each State	Solve	Easy	-	Database
3199. Count Triplets with Even XOR Set Bits I	Solve	Easy	-	Array Bit Manipulation
3200. Maximum Height of a Triangle	Solve	Easy	-	Array Enumeration
3206. Alternating Groups I	Solve	Easy	-	Array Sliding Window
3210. Find the Encrypted String	Solve	Easy	-	String
3216. Lexicographically Smallest String After a Swap	Solve	Easy	-	Greedy String
3222. Find the Winning Player in Coin Game	Solve	Easy	-	Game Theory Math+1
3226. Number of Bit Changes to Make Two Integers Equal	Solve	Easy	-	Bit Manipulation
3232. Find if Digit Game Can Be Won	Solve	Easy	-	Array Math
3238. Find the Number of Winning Players	Solve	Easy	-	Array Counting+1
3242. Design Neighbor Sum Service	Solve	Easy	-	Array Design+3
3246. Premier League Table Ranking	Solve	Easy	-	Database
3248. Snake in Matrix	Solve	Easy	-	Array Simulation+1
3258. Count Substrings That Satisfy K-Constraint I	Solve	Easy	-	Sliding Window String
3263. Convert Doubly Linked List to Array I	Solve	Easy	-	Array Doubly-Linked List+1
3264. Final Array State After K Multiplication Operations I	Solve	Easy	-	Array Heap (Priority Queue)+2
3270. Find the Key of the Numbers	Solve	Easy	-	Math
3274. Check if Two Chessboard Squares Have the Same Color	Solve	Easy	-	Math String
3280. Convert Date to Binary	Solve	Easy	-	Math String
3285. Find Indices of Stable Mountains	Solve	Easy	-	Array
3289. The Two Sneaky Numbers of Digitville	Solve	Easy	-	Array Hash Table+1
3300. Minimum Element After Replacement With Digit Sum	Solve	Easy	-	Array Math
3304. Find the K-th Character in String Game I	Solve	Easy	-	Bit Manipulation Math+2
3314. Construct the Minimum Bitwise Array I	Solve	Easy	-	Array Bit Manipulation
3318. Find X-Sum of All K-Long Subarrays I	Solve	Easy	-	Array Hash Table+2
3330. Find the Original Typed String I	Solve	Easy	-	String
3340. Check Balanced String	Solve	Easy	-	String
3345. Smallest Divisible Digit Product I	Solve	Easy	-	Enumeration Math
3349. Adjacent Increasing Subarrays Detection I	Solve	Easy	-	Array
3353. Minimum Total Operations	Solve	Easy	-	Array
3354. Make Array Elements Equal to Zero	Solve	Easy	-	Array Prefix Sum+1
3358. Books with NULL Ratings	Solve	Easy	-	Database
3360. Stone Removal Game	Solve	Easy	-
3364. Minimum Positive Sum Subarray	Solve	Easy	-
3370. Smallest Number With All Set Bits	Solve	Easy	-