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
2601. Prime Subtraction Operation	Solve	Medium	Google	Array Binary Search+3
2602. Minimum Operations to Make All Array Elements Equal	Solve	Medium	-	Array Binary Search+2
2603. Collect Coins in a Tree	Solve	Hard	Lucid+1	Array Graph+2
2604. Minimum Time to Eat All Grains	Solve	Hard	Confluent	Array Binary Search+2
2605. Form Smallest Number From Two Digit Arrays	Solve	Easy	-	Array Enumeration+1
2606. Find the Substring With Maximum Cost	Solve	Medium	Amazon	Array Dynamic Programming+2
2607. Make K-Subarray Sums Equal	Solve	Medium	Amazon+1	Array Math+2
2608. Shortest Cycle in a Graph	Solve	Hard	Zomato	Breadth-First Search Graph
2609. Find the Longest Balanced Substring of a Binary String	Solve	Easy	-	String
2610. Convert an Array Into a 2D Array With Conditions	Solve	Medium	Amazon	Array Hash Table
2611. Mice and Cheese	Solve	Medium	DoorDash	Array Greedy+2
2612. Minimum Reverse Operations	Solve	Hard	Infosys	Array Breadth-First Search+1
2613. Beautiful Pairs	Solve	Hard	-	Array Divide and Conquer+4
2614. Prime In Diagonal	Solve	Easy	-	Array Math+2
2615. Sum of Distances	Solve	Medium	BNY Melon	Array Hash Table+1
2616. Minimize the Maximum Difference of Pairs	Solve	Medium	Amazon+4	Array Binary Search+1
2617. Minimum Number of Visited Cells in a Grid	Solve	Hard	Huawei	Array Breadth-First Search+6
2618. Check if Object Instance of Class	Solve	Medium	-
2619. Array Prototype Last	Solve	Easy	-
2620. Counter	Solve	Easy	-
2621. Sleep	Solve	Easy	-
2622. Cache With Time Limit	Solve	Medium	-
2623. Memoize	Solve	Medium	-
2624. Snail Traversal	Solve	Medium	-
2625. Flatten Deeply Nested Array	Solve	Medium	-
2626. Array Reduce Transformation	Solve	Easy	-
2627. Debounce	Solve	Medium	-
2628. JSON Deep Equal	Solve	Medium	-
2629. Function Composition	Solve	Easy	-
2630. Memoize II	Solve	Hard	-
2631. Group By	Solve	Medium	-
2632. Curry	Solve	Medium	-
2633. Convert Object to JSON String	Solve	Medium	-
2634. Filter Elements from Array	Solve	Easy	-
2635. Apply Transform Over Each Element in Array	Solve	Easy	-
2636. Promise Pool	Solve	Medium	-
2637. Promise Time Limit	Solve	Medium	-
2638. Count the Number of K-Free Subsets	Solve	Medium	Amazon	Array Combinatorics+3
2639. Find the Width of Columns of a Grid	Solve	Easy	Samsung	Array Matrix
2640. Find the Score of All Prefixes of an Array	Solve	Medium	TikTok	Array Prefix Sum
2641. Cousins in Binary Tree II	Solve	Medium	Amazon	Binary Tree Breadth-First Search+3
2642. Design Graph With Shortest Path Calculator	Solve	Hard	Samsung	Design Graph+2
2643. Row With Maximum Ones	Solve	Easy	-	Array Matrix
2644. Find the Maximum Divisibility Score	Solve	Easy	DE Shaw	Array
2645. Minimum Additions to Make Valid String	Solve	Medium	Google	Dynamic Programming Greedy+2
2646. Minimize the Total Price of the Trips	Solve	Hard	Adobe+1	Array Depth-First Search+3
2647. Color the Triangle Red	Solve	Hard	-	Array Math
2648. Generate Fibonacci Sequence	Solve	Easy	-
2649. Nested Array Generator	Solve	Medium	-
2650. Design Cancellable Function	Solve	Hard	-