Problems

3,898+ problems · 938 Easy · 2039 Medium · 921 Hard

Title	Solution	Practice	Difficulty	Companies	Topics
3838. Weighted Word Mapping	Solution	Solve	Easy	-	Array Simulation+1
3833. Count Dominant Indices	Solution	Solve	Easy	-	Array Enumeration
3834. Merge Adjacent Equal Elements	Solution	Solve	Medium	-	Array Simulation+1
3842. Toggle Light Bulbs	Solution	Solve	Easy	-	Array Hash Table+2
3835. Count Subarrays With Cost Less Than or Equal to K	Solution	Solve	Medium	-	Array Monotonic Queue+1
3831. Median of a Binary Search Tree Level	Solution	Solve	Medium	-	Binary Search Tree Binary Tree+3
3841. Palindromic Path Queries in a Tree	Solution	Solve	Hard	-	Array Divide and Conquer+3
3817. Good Indices in a Digit String	Solution	Solve	Medium	-	Math String
3845. Maximum Subarray XOR with Bounded Range	Solution	Solve	Hard	-	Array Bit Manipulation+5
3836. Maximum Score Using Exactly K Pairs	Solution	Solve	Hard	-	Array Dynamic Programming
3822. Design Order Management System	Solution	Solve	Medium	Optiver	Design Hash Table
3823. Reverse Letters Then Special Characters in a String	Solution	Solve	Easy	-	Simulation String+1
3818. Minimum Prefix Removal to Make Array Strictly Increasing	Solution	Solve	Medium	Jpmorgan	Array
3830. Longest Alternating Subarray After Removing At Most One Element	Solution	Solve	Hard	-	Array Dynamic Programming+1
3807. Minimum Cost to Repair Edges to Traverse a Graph	Solution	Solve	Medium	-	Binary Search Breadth-First Search+1
3827. Count Monobit Integers	Solution	Solve	Easy	Zoho	Bit Manipulation Enumeration
3864. Minimum Cost to Partition a Binary String	Solution	Solve	Hard	-	Divide and Conquer Prefix Sum+1
3810. Minimum Operations to Reach Target Array	Solution	Solve	Medium	-	Array Greedy+1
3821. Find Nth Smallest Integer With K One Bits	Solution	Solve	Hard	Google	Bit Manipulation Combinatorics+1
3809. Best Reachable Tower	Solution	Solve	Medium	-	Array
3803. Count Residue Prefixes	Solution	Solve	Easy	Google+1	Hash Table String
3805. Count Caesar Cipher Pairs	Solution	Solve	Medium	Google	Array Counting+3
3812. Minimum Edge Toggles on a Tree	Solution	Solve	Hard	-	Depth-First Search Graph+3
3820. Pythagorean Distance Nodes in a Tree	Solution	Solve	Medium	PayPal	Breadth-First Search Tree
3798. Largest Even Number	Solution	Solve	Easy	-	String
3813. Vowel-Consonant Score	Solution	Solve	Easy	-	Simulation String
3794. Reverse String Prefix	Solution	Solve	Easy	Amazon	String Two Pointers
3824. Minimum K to Reduce Array Within Limit	Solution	Solve	Medium	Google	Array Binary Search
3790. Smallest All-Ones Multiple	Solution	Solve	Medium	-	Hash Table Math
3788. Maximum Score of a Split	Solution	Solve	Medium	-	Array Prefix Sum
3792. Sum of Increasing Product Blocks	Solution	Solve	Medium	-	Math Simulation
3819. Rotate Non Negative Elements	Solution	Solve	Medium	Accolite	Array Simulation
3846. Total Distance to Type a String Using One Finger	Solution	Solve	Medium	-	Hash Table String
3783. Mirror Distance of an Integer	Solution	Solve	Easy	-	Math
3763. Maximum Total Sum with Threshold Constraints	Solution	Solve	Medium	-	Array Greedy+2
3787. Find Diameter Endpoints of a Tree	Solution	Solve	Medium	Agoda	Breadth-First Search Graph+1
3782. Last Remaining Integer After Alternating Deletion Operations	Solution	Solve	Hard	-	Math Recursion
3779. Minimum Number of Operations to Have Distinct Elements	Solution	Solve	Medium	Accenture	Array Hash Table
3858. Minimum Bitwise OR From Grid	Solution	Solve	Medium	-	Array Bit Manipulation+2
3780. Maximum Sum of Three Numbers Divisible by Three	Solution	Solve	Medium	Amazon	Array Greedy+2
3869. Count Fancy Numbers in a Range	Solution	Solve	Hard	-	Dynamic Programming Math
3774. Absolute Difference Between Maximum and Minimum K Elements	Solution	Solve	Easy	-	Array Sorting
3775. Reverse Words With Same Vowel Count	Solution	Solve	Medium	-	Simulation String+1
3800. Minimum Cost to Make Two Binary Strings Equal	Solution	Solve	Medium	-	Greedy String
3773. Maximum Number of Equal Length Runs	Solution	Solve	Medium	-	Counting Hash Table+1
3806. Maximum Bitwise AND After Increment Operations	Solution	Solve	Hard	Amazon	Array Bit Manipulation+2
3797. Count Routes to Climb a Rectangular Grid	Solution	Solve	Hard	Microsoft	Array Dynamic Programming+2
3795. Minimum Subarray Length With Distinct Sum At Least K	Solution	Solve	Medium	-	Array Hash Table+1
3772. Maximum Subgraph Score in a Tree	Solution	Solve	Hard	Microsoft	Array Depth-First Search+2
3769. Sort Integers by Binary Reflection	Solution	Solve	Easy	-	Array Sorting