Problems

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

Title	Solution	Practice	Difficulty	Companies	Topics
4031. Find All Numbers Disappeared in an Array II	Solution	Solve	Medium	-	Array Binary Search+1
4032. Longest Subarray With at Most K Distinct Prime Factors	Solution	Solve	Medium	-	Array Hash Table+3
4033. Valid K-Unique Subarrays I	Solution	Solve	Hard	-	Array Binary Indexed Tree+4
4034. Minimum Bishop Moves to Reach Target	Solution	Solve	Medium	-	Array Math
4037. Maximum Valid Split Positions II	Solution	Solve	Hard	-	Array Enumeration+2
4035. Maximum Valid Split Positions I	Solution	Solve	Medium	-	Array Enumeration+2
4036. Lexicographically Largest String After Pair Transformations	Solution	Solve	Medium	-	Array Bit Manipulation+2
4038. Count Integers Appearing in a Single Block	Solution	Solve	Easy	-	Array Counting+1
4039. Sum of Decoded Numbers	Solution	Solve	Medium	-	Array Math+1
4041. Minimum Operations to Form Subset Sum II	Solution	Solve	Hard	-	Array Dynamic Programming
4040. Minimum Operations to Form Subset Sum I	Solution	Solve	Medium	-	Array Dynamic Programming
4042. Valid K-Unique Subarrays II	Solution	Solve	Hard	-
4044. Count Good Cyclic Rotations	Solution	Solve	Medium	-	Array Prefix Sum+1
4043. Count Rotations With Exactly K Equal Adjacent Pairs	Solution	Solve	Easy	-	Enumeration Sliding Window+1
4045. Count Robot Groups	Solution	Solve	Medium	-	Array Monotonic Stack+1
4046. Minimum Cost Path With At Most K Turns	Solution	Solve	Hard	-	Array Graph+3
4047. Minimum Operations to Make XOR of All Elements Zero	Solution	Solve	Hard	-
4048. Count Values With Equally Spaced Occurrences I	Solution	Solve	Easy	-	Array Hash Table
4049. Count Values With Equally Spaced Occurrences II	Solution	Solve	Medium	-	Array Hash Table
4050. Minimum Days to Score Exactly N Points	Solution	Solve	Medium	-	Dynamic Programming Math
4051. Count Subarrays with Distant Sums	Solution	Solve	Hard	-	Array Binary Indexed Tree+3
4052. Cyclically Shift Rows and Columns	Solution	Solve	Easy	-	Array Matrix+1
4053. Minimum Operations to Make Every Element Palindromic	Solution	Solve	Medium	-	Array Binary Search
4054. Count Shadow Pairs I	Solution	Solve	Medium	-	Array Monotonic Stack+1
4055. Count Shadow Pairs II	Solution	Solve	Hard	-	Array Binary Indexed Tree+6
4056. Number of Intersecting Interval Pairs I	Solution	Solve	Easy	-
4057. Number of Intersecting Interval Pairs II	Solution	Solve	Medium	-
4058. Maximum Pulse Value After One Subarray Rotation	Solution	Solve	Medium	-
4059. Lexicographically Largest Power Array	Solution	Solve	Hard	-
4060. Count Evenly Good Integers	Solution	Solve	Hard	-
4064. Longest Subarray Divisible by K with At Most One Negation II	Solution	Solve	Hard	-
4061. Minimum Queen Moves to Reach Target	Solution	Solve	Easy	-
4062. Transform Array Using Pair Operations	Solution	Solve	Medium	-
4063. Longest Subarray Divisible by K with At Most One Negation I	Solution	Solve	Medium	-