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
3251. Find the Count of Monotonic Pairs II	Solve	Hard	-	Array Combinatorics+3
3252. Premier League Table Ranking II	Solve	Medium	-	Database
3253. Construct String with Minimum Cost (Easy)	Solve	Medium	-
3254. Find the Power of K-Size Subarrays I	Solve	Medium	-	Array Sliding Window
3255. Find the Power of K-Size Subarrays II	Solve	Medium	-	Array Sliding Window
3256. Maximum Value Sum by Placing Three Rooks I	Solve	Hard	-	Array Dynamic Programming+2
3257. Maximum Value Sum by Placing Three Rooks II	Solve	Hard	-	Array Dynamic Programming+2
3258. Count Substrings That Satisfy K-Constraint I	Solve	Easy	-	Sliding Window String
3259. Maximum Energy Boost From Two Drinks	Solve	Medium	-	Array Dynamic Programming
3260. Find the Largest Palindrome Divisible by K	Solve	Hard	-	Dynamic Programming Greedy+3
3261. Count Substrings That Satisfy K-Constraint II	Solve	Hard	-	Array Binary Search+3
3262. Find Overlapping Shifts	Solve	Medium	-	Database
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
3265. Count Almost Equal Pairs I	Solve	Medium	-	Array Counting+3
3266. Final Array State After K Multiplication Operations II	Solve	Hard	-	Array Heap (Priority Queue)+1
3267. Count Almost Equal Pairs II	Solve	Hard	-	Array Counting+3
3268. Find Overlapping Shifts II	Solve	Hard	-	Database
3269. Constructing Two Increasing Arrays	Solve	Hard	-	Array Dynamic Programming
3270. Find the Key of the Numbers	Solve	Easy	-	Math
3271. Hash Divided String	Solve	Medium	-	Simulation String
3272. Find the Count of Good Integers	Solve	Hard	-	Combinatorics Enumeration+2
3273. Minimum Amount of Damage Dealt to Bob	Solve	Hard	-	Array Greedy+1
3274. Check if Two Chessboard Squares Have the Same Color	Solve	Easy	-	Math String
3275. K-th Nearest Obstacle Queries	Solve	Medium	-	Array Heap (Priority Queue)
3276. Select Cells in Grid With Maximum Score	Solve	Hard	-	Array Bit Manipulation+3
3277. Maximum XOR Score Subarray Queries	Solve	Hard	-	Array Dynamic Programming
3278. Find Candidates for Data Scientist Position II	Solve	Medium	-	Database
3279. Maximum Total Area Occupied by Pistons	Solve	Hard	-	Array Counting+4
3280. Convert Date to Binary	Solve	Easy	-	Math String
3281. Maximize Score of Numbers in Ranges	Solve	Medium	-	Array Binary Search+2
3282. Reach End of Array With Max Score	Solve	Medium	-	Array Greedy
3283. Maximum Number of Moves to Kill All Pawns	Solve	Hard	-	Array Bit Manipulation+4
3284. Sum of Consecutive Subarrays	Solve	Medium	-	Array Dynamic Programming+1
3285. Find Indices of Stable Mountains	Solve	Easy	-	Array
3286. Find a Safe Walk Through a Grid	Solve	Medium	-	Array Breadth-First Search+4
3287. Find the Maximum Sequence Value of Array	Solve	Hard	-	Array Bit Manipulation+1
3288. Length of the Longest Increasing Path	Solve	Hard	-	Array Binary Search+1
3289. The Two Sneaky Numbers of Digitville	Solve	Easy	-	Array Hash Table+1
3290. Maximum Multiplication Score	Solve	Medium	-	Array Dynamic Programming
3291. Minimum Number of Valid Strings to Form Target I	Solve	Medium	-	Array Binary Search+7
3292. Minimum Number of Valid Strings to Form Target II	Solve	Hard	-	Array Binary Search+6
3293. Calculate Product Final Price	Solve	Medium	-	Database
3294. Convert Doubly Linked List to Array II	Solve	Medium	-	Array Doubly-Linked List+1
3295. Report Spam Message	Solve	Medium	-	Array Hash Table+1
3296. Minimum Number of Seconds to Make Mountain Height Zero	Solve	Medium	-	Array Binary Search+3
3297. Count Substrings That Can Be Rearranged to Contain a String I	Solve	Medium	-	Hash Table Sliding Window+1
3298. Count Substrings That Can Be Rearranged to Contain a String II	Solve	Hard	-	Hash Table Sliding Window+1
3299. Sum of Consecutive Subsequences	Solve	Hard	-	Array Dynamic Programming+1
3300. Minimum Element After Replacement With Digit Sum	Solve	Easy	-	Array Math