Problems

3,947+ problems · 946 Easy · 2062 Medium · 939 Hard

Active:Easy· 946 results

Title	Solution	Practice	Difficulty	Companies	Topics
605. Can Place Flowers	Solution	Solve	Easy	Airbnb+15	Array Greedy
607. Sales Person	Solution	Solve	Easy	Amazon+2	Database
610. Triangle Judgement	Solution	Solve	Easy	Amazon+4	Database
613. Shortest Distance in a Line	Solution	Solve	Easy	-	Database
617. Merge Two Binary Trees	Solution	Solve	Easy	Amazon+7	Binary Tree Breadth-First Search+2
619. Biggest Single Number	Solution	Solve	Easy	Amazon+2	Database
620. Not Boring Movies	Solution	Solve	Easy	Amazon+4	Database
627. Swap Salary	Solution	Solve	Easy	Amazon+3	Database
628. Maximum Product of Three Numbers	Solution	Solve	Easy	Accenture+16	Array Math+1
637. Average of Levels in Binary Tree	Solution	Solve	Easy	Amazon+3	Binary Tree Breadth-First Search+2
643. Maximum Average Subarray I	Solution	Solve	Easy	Amazon+9	Array Sliding Window
645. Set Mismatch	Solution	Solve	Easy	Amazon+5	Array Bit Manipulation+2
653. Two Sum IV - Input is a BST	Solution	Solve	Easy	Amazon+8	Binary Search Tree Binary Tree+5
657. Robot Return to Origin	Solution	Solve	Easy	Amazon+4	Simulation String
661. Image Smoother	Solution	Solve	Easy	Amazon+5	Array Matrix
671. Second Minimum Node In a Binary Tree	Solution	Solve	Easy	Amazon+2	Binary Tree Depth-First Search+1
674. Longest Continuous Increasing Subsequence	Solution	Solve	Easy	Amazon+4	Array
680. Valid Palindrome II	Solution	Solve	Easy	Amazon+15	Greedy String+1
682. Baseball Game	Solution	Solve	Easy	Amazon+5	Array Simulation+1
693. Binary Number with Alternating Bits	Solution	Solve	Easy	Amazon+3	Bit Manipulation
696. Count Binary Substrings	Solution	Solve	Easy	Adobe+19	String Two Pointers
697. Degree of an Array	Solution	Solve	Easy	Amazon+12	Array Hash Table
700. Search in a Binary Search Tree	Solution	Solve	Easy	Adobe+7	Binary Search Tree Binary Tree+1
703. Kth Largest Element in a Stream	Solution	Solve	Easy	Adobe+10	Binary Search Tree Binary Tree+4
704. Binary Search	Solution	Solve	Easy	Adobe+12	Array Binary Search
705. Design HashSet	Solution	Solve	Easy	Amazon+5	Array Design+3
706. Design HashMap	Solution	Solve	Easy	Amazon+14	Array Design+3
709. To Lower Case	Solution	Solve	Easy	Google+2	String
717. 1-bit and 2-bit Characters	Solution	Solve	Easy	Bloomberg+4	Array
724. Find Pivot Index	Solution	Solve	Easy	Accenture+18	Array Prefix Sum
728. Self Dividing Numbers	Solution	Solve	Easy	Amazon+3	Math
733. Flood Fill	Solution	Solve	Easy	Amazon+10	Array Breadth-First Search+2
734. Sentence Similarity	Solution	Solve	Easy	Google	Array Hash Table+1
744. Find Smallest Letter Greater Than Target	Solution	Solve	Easy	Amazon+5	Array Binary Search
746. Min Cost Climbing Stairs	Solution	Solve	Easy	Amazon+4	Array Dynamic Programming
747. Largest Number At Least Twice of Others	Solution	Solve	Easy	Bloomberg+2	Array Sorting
748. Shortest Completing Word	Solution	Solve	Easy	Google	Array Hash Table+1
760. Find Anagram Mappings	Solution	Solve	Easy	Google	Array Hash Table
762. Prime Number of Set Bits in Binary Representation	Solution	Solve	Easy	Amazon	Bit Manipulation Math
766. Toeplitz Matrix	Solution	Solve	Easy	Bloomberg+4	Array Matrix
771. Jewels and Stones	Solution	Solve	Easy	Adobe+7	Hash Table String
783. Minimum Distance Between BST Nodes	Solution	Solve	Easy	Amazon+3	Binary Search Tree Binary Tree+3
796. Rotate String	Solution	Solve	Easy	Accenture+12	String String Matching
800. Similar RGB Color	Solution	Solve	Easy	Google	Enumeration Math+1
804. Unique Morse Code Words	Solution	Solve	Easy	Amazon+3	Array Hash Table+1
806. Number of Lines To Write String	Solution	Solve	Easy	Google+1	Array String
812. Largest Triangle Area	Solution	Solve	Easy	Amazon+2	Array Geometry+1
819. Most Common Word	Solution	Solve	Easy	Amazon+4	Array Counting+2
821. Shortest Distance to a Character	Solution	Solve	Easy	Amazon+3	Array String+1
824. Goat Latin	Solution	Solve	Easy	Apple+2	String