Problems

4,034+ problems · 962 Easy · 2104 Medium · 968 Hard

Title	Solution	Practice	Difficulty	Companies	Topics
3931. Check Adjacent Digit Differences	Solution	Solve	Easy	-	String
3932. Count K-th Roots in a Range	Solution	Solve	Medium	Google+1	Binary Search Math
3934. Smallest Unique Subarray	Solution	Solve	Hard	-	Array Binary Search+4
3935. Power Update After K-th Largest Insertion I	Solution	Solve	Medium	Google
3933. Largest Local Values in a Matrix II	Solution	Solve	Medium	-	Array Matrix+1
3936. Minimum Swaps to Move Zeros to End	Solution	Solve	Easy	-	Array Two Pointers
3941. Password Strength	Solution	Solve	Medium	-	Hash Table String
3940. Limit Occurrences in Sorted Array	Solution	Solve	Easy	-	Array Two Pointers
3937. Minimum Operations to Make Array Modulo Alternating I	Solution	Solve	Medium	-	Array Enumeration
3942. Minimum Operations to Sort a Permutation	Solution	Solve	Medium	Amazon	Array
3943. Number of Pairs After Increment	Solution	Solve	Hard	-	Array Counting+2
3939. Count Non Adjacent Subsets in a Rooted Tree	Solution	Solve	Hard	Infosys	Array Depth-First Search+2
3938. Maximum Path Intersection Sum in a Grid	Solution	Solve	Medium	-	Array Dynamic Programming+2
3945. Digit Frequency Score	Solution	Solve	Easy	-	Hash Table Math
3944. Minimum Operations to Make Array Modulo Alternating II	Solution	Solve	Hard	-
3948. Lexicographically Maximum MEX Array	Solution	Solve	Hard	Amazon+1	Array Greedy+2
3947. Maximum Number of Items From Sale II	Solution	Solve	Medium	-	Array Greedy+2
3946. Maximum Number of Items From Sale I	Solution	Solve	Medium	Microsoft	Array Dynamic Programming+1
3949. Subtree Inversion Sum II	Solution	Solve	Hard	-
3954. Sum of Compatible Numbers in Range I	Solution	Solve	Easy	-	Bit Manipulation Dynamic Programming+1
3950. Exactly One Consecutive Set Bits Pair	Solution	Solve	Easy	-	Bit Manipulation
3951. Minimum Energy to Maintain Brightness	Solution	Solve	Medium	-	Array Sorting
3955. Valid Binary Strings With Cost Limit	Solution	Solve	Medium	-	Backtracking Bit Manipulation+2
3953. Maximum Score with Co-Prime Element	Solution	Solve	Hard	Atlassian+1	Array Combinatorics+4
3952. Maximum Total Value of Covered Indices	Solution	Solve	Medium	Amazon	Array Dynamic Programming+2
3957. Maximum Sum of M Non-Overlapping Subarrays II	Solution	Solve	Hard	-	Array Binary Search+5
3956. Maximum Sum of M Non-Overlapping Subarrays I	Solution	Solve	Hard	-	Array Binary Search+5
3958. Minimum Cost to Split into Ones II	Solution	Solve	Medium	-
3959. Check Good Integer	Solution	Solve	Easy	-	Math Simulation
3960. Frequency Balance Subarray	Solution	Solve	Medium	Meta	Array Counting+1
3962. Maximum Subarray Sum After at Most K Swaps	Solution	Solve	Hard	Google	Array Binary Indexed Tree+5
3961. Maximize Sum of Device Ratings	Solution	Solve	Medium	Amazon+1	Array Greedy+2
3963. Create Grid With Exactly One Path	Solution	Solve	Easy	-
3968. Maximum Manhattan Distance After All Moves	Solution	Solve	Medium	-	Counting Math+1
3964. Minimum Lights to Illuminate a Road	Solution	Solve	Medium	-	Array Prefix Sum
3972. Valid Subarrays With Matching Sum Digits II	Solution	Solve	Hard	-
3969. Valid Subarrays With Matching Sum Digits I	Solution	Solve	Medium	Microsoft	Array Enumeration+3
3966. Count Good Integers in a Range	Solution	Solve	Hard	-	Dynamic Programming Math
3971. Maximum Total Value	Solution	Solve	Hard	Infosys	Array Binary Search+2
3970. Shortest Path With At Most K Consecutive Identical Characters	Solution	Solve	Medium	-	Graph Heap (Priority Queue)+2
3967. Finish Time of Tasks II	Solution	Solve	Hard	-
3965. Finish Time of Tasks I	Solution	Solve	Medium	-	Array Depth-First Search+2
3973. Distinct Gate Paths to LCA	Solution	Solve	Hard	-
3974. Maximum Total Sum of K Selected Elements	Solution	Solve	Medium	-	Array Greedy+1
3977. Minimum Time to Reach Target With Limited Power	Solution	Solve	Hard	-	Array Dynamic Programming+3
3976. Maximum Subarray Sum After Multiplier	Solution	Solve	Medium	Amazon+1	Array Dynamic Programming
3975. Filter Occupied Intervals	Solution	Solve	Medium	Google	Array Sorting
3996. Even Number of Knight Moves	Solution	Solve	Easy	-	Array Math
3993. Maximum Value of an Alternating Sequence	Solution	Solve	Medium	-	Greedy Math
3997. Count Dominant Nodes in a Binary Tree	Solution	Solve	Medium	-	Binary Tree Depth-First Search+1