Problems

3,858+ problems · 930 Easy · 2018 Medium · 910 Hard

Active:Medium· 2018 results

Title	Solution	Practice	Difficulty	Companies	Topics
2628. JSON Deep Equal	Solution	Solve	Medium	-
2631. Group By	Solution	Solve	Medium	-
2632. Curry	Solution	Solve	Medium	-
2633. Convert Object to JSON String	Solution	Solve	Medium	Google
2636. Promise Pool	Solution	Solve	Medium	Uber
2637. Promise Time Limit	Solution	Solve	Medium	Amazon+1
2638. Count the Number of K-Free Subsets	Solution	Solve	Medium	Amazon	Array Combinatorics+3
2640. Find the Score of All Prefixes of an Array	Solution	Solve	Medium	Tiktok	Array Prefix Sum
2641. Cousins in Binary Tree II	Solution	Solve	Medium	Amazon+2	Binary Tree Breadth-First Search+3
2645. Minimum Additions to Make Valid String	Solution	Solve	Medium	Amazon+3	Dynamic Programming Greedy+2
2649. Nested Array Generator	Solution	Solve	Medium	-
2653. Sliding Subarray Beauty	Solution	Solve	Medium	Amazon	Array Hash Table+1
2654. Minimum Number of Operations to Make All Array Elements Equal to 1	Solution	Solve	Medium	Amazon+2	Array Math+1
2655. Find Maximal Uncovered Ranges	Solution	Solve	Medium	Meta	Array Sorting
2657. Find the Prefix Common Array of Two Arrays	Solution	Solve	Medium	Amazon+5	Array Bit Manipulation+1
2658. Maximum Number of Fish in a Grid	Solution	Solve	Medium	Amazon+3	Array Breadth-First Search+3
2661. First Completely Painted Row or Column	Solution	Solve	Medium	Bloomberg+2	Array Hash Table+1
2662. Minimum Cost of a Path With Special Roads	Solution	Solve	Medium	Samsung	Array Graph+2
2664. The Knight’s Tour	Solution	Solve	Medium	Microsoft	Array Backtracking+1
2671. Frequency Tracker	Solution	Solve	Medium	Microsoft	Design Hash Table
2672. Number of Adjacent Elements With the Same Color	Solution	Solve	Medium	Amazon+5	Array
2673. Make Costs of Paths Equal in a Binary Tree	Solution	Solve	Medium	Tiktok	Array Binary Tree+3
2674. Split a Circular Linked List	Solution	Solve	Medium	-	Linked List Two Pointers
2676. Throttle	Solution	Solve	Medium	-
2679. Sum in a Matrix	Solution	Solve	Medium	-	Array Heap (Priority Queue)+3
2680. Maximum OR	Solution	Solve	Medium	De Shaw+1	Array Bit Manipulation+2
2683. Neighboring Bitwise XOR	Solution	Solve	Medium	Amazon+1	Array Bit Manipulation
2684. Maximum Number of Moves in a Grid	Solution	Solve	Medium	Accenture+2	Array Dynamic Programming+1
2685. Count the Number of Complete Components	Solution	Solve	Medium	Amazon+2	Breadth-First Search Depth-First Search+2
2686. Immediate Food Delivery III	Solution	Solve	Medium	-	Database
2688. Find Active Users	Solution	Solve	Medium	-	Database
2692. Make Object Immutable	Solution	Solve	Medium	-
2693. Call Function with Custom Context	Solution	Solve	Medium	-
2694. Event Emitter	Solution	Solve	Medium	Amazon+3
2698. Find the Punishment Number of an Integer	Solution	Solve	Medium	Amazon+3	Backtracking Math
2700. Differences Between Two Objects	Solution	Solve	Medium	Couchbase+1
2705. Compact Object	Solution	Solve	Medium	-
2707. Extra Characters in a String	Solution	Solve	Medium	Amazon+2	Array Dynamic Programming+3
2708. Maximum Strength of a Group	Solution	Solve	Medium	-	Array Backtracking+5
2711. Difference of Number of Distinct Values on Diagonals	Solution	Solve	Medium	-	Array Hash Table+1
2712. Minimum Cost to Make All Characters Equal	Solution	Solve	Medium	Nutanix	Dynamic Programming Greedy+1
2718. Sum of Matrix After Queries	Solution	Solve	Medium	-	Array Hash Table
2721. Execute Asynchronous Functions in Parallel	Solution	Solve	Medium	Paytm
2722. Join Two Arrays by ID	Solution	Solve	Medium	-
2730. Find the Longest Semi-Repetitive Substring	Solution	Solve	Medium	-	Sliding Window String
2731. Movement of Robots	Solution	Solve	Medium	Google+1	Array Brainteaser+2
2734. Lexicographically Smallest String After Substring Operation	Solution	Solve	Medium	Agoda+3	Greedy String
2735. Collecting Chocolates	Solution	Solve	Medium	Amazon+1	Array Enumeration
2737. Find the Closest Marked Node	Solution	Solve	Medium	-	Array Graph+2
2738. Count Occurrences in Text	Solution	Solve	Medium	-	Database