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
2220. Minimum Bit Flips to Convert Number	Solve	Easy	persistent systems	Bit Manipulation
2224. Minimum Number of Operations to Convert Time	Solve	Easy	Google	Greedy String
2229. Check if an Array Is Consecutive	Solve	Easy	Turbot	Array Hash Table+1
2230. The Users That Are Eligible for Discount	Solve	Easy	Analytics Quotient	Database
2231. Largest Number After Digit Swaps by Parity	Solve	Easy	ZScaler	Heap (Priority Queue)Sorting
2235. Add Two Integers	Solve	Easy	Adobe+9	Math
2236. Root Equals Sum of Children	Solve	Easy	Amazon+2	Binary Tree Tree
2239. Find Closest Number to Zero	Solve	Easy	Tiger Analytics	Array
2243. Calculate Digit Sum of a String	Solve	Easy	Uber	Simulation String
2248. Intersection of Multiple Arrays	Solve	Easy	Uber	Array Counting+2
2255. Count Prefixes of a Given String	Solve	Easy	Google	Array String
2259. Remove Digit From Number to Maximize Result	Solve	Easy	Microsoft	Enumeration Greedy+1
2264. Largest 3-Same-Digit Number in String	Solve	Easy	OpenText+1	String
2269. Find the K-Beauty of a Number	Solve	Easy	Postmates+1	Math Sliding Window+1
2273. Find Resultant Array After Removing Anagrams	Solve	Easy	Amazon+2	Array Hash Table+2
2278. Percentage of Letter in String	Solve	Easy	American Express	String
2283. Check if Number Has Equal Digit Count and Digit Value	Solve	Easy	Google+1	Counting Hash Table+1
2287. Rearrange Characters to Make Target String	Solve	Easy	Amazon	Counting Hash Table+1
2293. Min Max Game	Solve	Easy	-	Array Simulation
2299. Strong Password Checker II	Solve	Easy	-	String
2303. Calculate Amount Paid in Taxes	Solve	Easy	Bloomberg+2	Array Simulation
2309. Greatest English Letter in Upper and Lower Case	Solve	Easy	Microsoft	Enumeration Hash Table+1
2315. Count Asterisks	Solve	Easy	Amazon+1	String
2319. Check if Matrix Is X-Matrix	Solve	Easy	-	Array Matrix
2325. Decode the Message	Solve	Easy	Coinbase	Hash Table String
2329. Product Sales Analysis V	Solve	Easy	Amazon	Database
2331. Evaluate Boolean Binary Tree	Solve	Easy	Apple+1	Binary Tree Depth-First Search+1
2335. Minimum Amount of Time to Fill Cups	Solve	Easy	-	Array Greedy+2
2339. All the Matches of the League	Solve	Easy	Microsoft	Database
2341. Maximum Number of Pairs in Array	Solve	Easy	Altimetrik+1	Array Counting+1
2347. Best Poker Hand	Solve	Easy	Amazon+1	Array Counting+1
2351. First Letter to Appear Twice	Solve	Easy	Google	Bit Manipulation Counting+2
2356. Number of Unique Subjects Taught by Each Teacher	Solve	Easy	Capgemini	Database
2357. Make Array Zero by Subtracting Equal Amounts	Solve	Easy	Amazon	Array Greedy+4
2363. Merge Similar Items	Solve	Easy	Google	Array Hash Table+2
2367. Number of Arithmetic Triplets	Solve	Easy	-	Array Enumeration+2
2373. Largest Local Values in a Matrix	Solve	Easy	Google	Array Matrix
2377. Sort the Olympic Table	Solve	Easy	-	Database
2379. Minimum Recolors to Get K Consecutive Black Blocks	Solve	Easy	DailyHunt	Sliding Window String
2383. Minimum Hours of Training to Win a Competition	Solve	Easy	-	Array Greedy
2389. Longest Subsequence With Limited Sum	Solve	Easy	Adobe	Array Binary Search+3
2395. Find Subarrays With Equal Sum	Solve	Easy	Adobe+1	Array Hash Table
2399. Check Distances Between Same Letters	Solve	Easy	-	Array Hash Table+1
2404. Most Frequent Even Element	Solve	Easy	-	Array Counting+1
2409. Count Days Spent Together	Solve	Easy	-	Math String
2413. Smallest Even Multiple	Solve	Easy	Adobe+2	Math Number Theory
2418. Sort the People	Solve	Easy	Adobe+2	Array Hash Table+2
2423. Remove Letter To Equalize Frequency	Solve	Easy	Bloomberg+1	Counting Hash Table+1
2427. Number of Common Factors	Solve	Easy	-	Enumeration Math+1
2432. The Employee That Worked on the Longest Task	Solve	Easy	Morgan Stanely	Array