Problems

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

Active:Medium· 2018 results

Title	Solution	Practice	Difficulty	Companies	Topics
3342. Find Minimum Time to Reach Last Room II	Solution	Solve	Medium	Amazon+2	Array Graph+3
3344. Maximum Sized Array	Solution	Solve	Medium	-	Binary Search Bit Manipulation
3346. Maximum Frequency of an Element After Performing Operations I	Solution	Solve	Medium	Amazon+2	Array Binary Search+3
3350. Adjacent Increasing Subarrays Detection II	Solution	Solve	Medium	Google	Array Binary Search
3355. Zero Array Transformation I	Solution	Solve	Medium	Amazon+4	Array Prefix Sum
3356. Zero Array Transformation II	Solution	Solve	Medium	Amazon+3	Array Binary Search+1
3361. Shift Distance Between Two Strings	Solution	Solve	Medium	Google	Array Prefix Sum+1
3362. Zero Array Transformation III	Solution	Solve	Medium	Amazon+4	Array Greedy+3
3365. Rearrange K Substrings to Form Target String	Solution	Solve	Medium	-	Hash Table Sorting+1
3366. Minimum Array Sum	Solution	Solve	Medium	Amazon+4	Array Dynamic Programming
3371. Identify the Largest Outlier in an Array	Solution	Solve	Medium	Amazon+3	Array Counting+2
3372. Maximize the Number of Target Nodes After Connecting Trees I	Solution	Solve	Medium	Google+1	Breadth-First Search Depth-First Search+1
3874. Valid Subarrays With Exactly One Peak	Solution	Solve	Medium	-
3865. Reverse K Subarrays	Solution	Solve	Medium	-	Array Two Pointers
3876. Construct Uniform Parity Array II	Solution	Solve	Medium	-	Array Math
3868. Minimum Cost to Equalize Arrays Using Swaps	Solution	Solve	Medium	-	Array Counting+2
3851. Maximum Requests Without Violating the Limit	Solution	Solve	Medium	-	Array Greedy+3
3871. Count Commas in Range II	Solution	Solve	Medium	-	Math
3867. Sum of GCD of Formed Pairs	Solution	Solve	Medium	-	Array Math+3
3860. Unique Email Groups	Solution	Solve	Medium	-	Array Hash Table+1
3862. Find the Smallest Balanced Index	Solution	Solve	Medium	-	Array Prefix Sum
3872. Longest Arithmetic Sequence After Changing At Most One Element	Solution	Solve	Medium	-	Array Enumeration
3837. Delayed Count of Equal Elements	Solution	Solve	Medium	-	Array Counting+1
3848. Check Digitorial Permutation	Solution	Solve	Medium	-	Counting Math
3847. Find the Score Difference in a Game	Solution	Solve	Medium	-	Array Simulation
3844. Longest Almost-Palindromic Substring	Solution	Solve	Medium	-	Dynamic Programming String+1
3863. Minimum Operations to Sort a String	Solution	Solve	Medium	-	String
3854. Minimum Operations to Make Array Parity Alternating	Solution	Solve	Medium	-	Array Greedy
3843. First Element with Unique Frequency	Solution	Solve	Medium	-	Array Counting+1
3834. Merge Adjacent Equal Elements	Solution	Solve	Medium	-	Array Simulation+1
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
3817. Good Indices in a Digit String	Solution	Solve	Medium	-	Math String
3822. Design Order Management System	Solution	Solve	Medium	Optiver	Design Hash Table
3818. Minimum Prefix Removal to Make Array Strictly Increasing	Solution	Solve	Medium	Jpmorgan	Array
3807. Minimum Cost to Repair Edges to Traverse a Graph	Solution	Solve	Medium	-	Binary Search Breadth-First Search+1
3810. Minimum Operations to Reach Target Array	Solution	Solve	Medium	-	Array Greedy+1
3809. Best Reachable Tower	Solution	Solve	Medium	-	Array
3805. Count Caesar Cipher Pairs	Solution	Solve	Medium	Google	Array Counting+3
3820. Pythagorean Distance Nodes in a Tree	Solution	Solve	Medium	PayPal	Breadth-First Search Tree
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
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
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