Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2578. Split With Minimum Sum | Easy | 21.9% | TopicsMathGreedySorting |
| 2606. Find the Substring With Maximum Cost | Medium | 21.9% | TopicsArrayHash TableStringDynamic Programming |
| 2563. Count the Number of Fair Pairs | Medium | 21.9% | TopicsArrayTwo PointersBinary SearchSorting |
| 2575. Find the Divisibility Array of a String | Medium | 21.9% | TopicsArrayMathString |
| 2657. Find the Prefix Common Array of Two Arrays | Medium | 21.9% | TopicsArrayHash TableBit Manipulation |
| 2917. Find the K-or of an Array | Easy | 21.9% | TopicsArrayBit Manipulation |
| 2926. Maximum Balanced Subsequence Sum | Hard | 21.9% | TopicsArrayBinary SearchDynamic ProgrammingBinary Indexed TreeSegment Tree |
| 2947. Count Beautiful Substrings I | Medium | 21.9% | TopicsHash TableMathStringEnumerationNumber TheoryPrefix Sum |
| 2945. Find Maximum Non-decreasing Array Length | Hard | 21.9% | TopicsArrayBinary SearchDynamic ProgrammingStackQueueMonotonic StackPrefix SumMonotonic Queue |
| 2973. Find Number of Coins to Place in Tree Nodes | Hard | 21.9% | TopicsDynamic ProgrammingTreeDepth-First SearchSortingHeap (Priority Queue)DP on Trees |
| 2958. Length of Longest Subarray With at Most K Frequency | Medium | 21.9% | TopicsArrayHash TableSliding Window |
| 3005. Count Elements With Maximum Frequency | Easy | 21.9% | TopicsArrayHash TableCounting |
| 3081. Replace Question Marks in String to Minimize Its Value | Medium | 21.9% | TopicsHash TableStringGreedySortingHeap (Priority Queue)Counting |
| 3134. Find the Median of the Uniqueness Array | Hard | 21.9% | TopicsArrayHash TableBinary SearchSliding Window |
| 3154. Find Number of Ways to Reach the K-th Stair | Hard | 21.9% | TopicsMathDynamic ProgrammingBit ManipulationMemoizationCombinatorics |
| Primary Department for Each Employee | Easy | 21.9% | TopicsDatabase |
| 840. Magic Squares In Grid | Medium | 21.9% | TopicsArrayHash TableMathMatrix |
| 3043. Find the Length of the Longest Common Prefix | Medium | 21.9% | TopicsArrayHash TableStringTrie |
| 3317. Find the Number of Possible Ways for an Event | Hard | 21.9% | TopicsMathDynamic ProgrammingCombinatorics |
| 2348. Number of Zero-Filled Subarrays | Medium | 21.9% | TopicsArrayMath |
| 1267. Count Servers that Communicate | Medium | 21.9% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrixCounting |
| 2560. House Robber IV | Medium | 21.9% | TopicsArrayBinary SearchDynamic ProgrammingGreedy |
| 3392. Count Subarrays of Length Three With a Condition | Easy | 21.9% | TopicsArray |
| 3234. Count the Number of Substrings With Dominant Ones | Medium | 21.9% | TopicsStringEnumeration |
| 3304. Find the K-th Character in String Game I | Easy | 21.9% | TopicsMathBit ManipulationRecursionSimulation |
