Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Remove Boxes | Hard | 7.2% | TopicsArrayDynamic ProgrammingMemoization |
| 1297. Maximum Number of Occurrences of a Substring | Medium | 7.2% | TopicsHash TableStringSliding Window |
| 3516. Find Closest Person | Easy | 7.2% | TopicsMath |
| 3541. Find Most Frequent Vowel and Consonant | Easy | 7.2% | TopicsHash TableStringCounting |
| 1935. Maximum Number of Words You Can Type | Easy | 7.2% | TopicsHash TableString |
| 2544. Alternating Digit Sum | Easy | 7.2% | TopicsMath |
| 3370. Smallest Number With All Set Bits | Easy | 7.2% | TopicsMathBit Manipulation |
| 2421. Number of Good Paths | Hard | 7.2% | TopicsArrayHash TableTreeUnion-FindGraph TheorySorting |
| 3428. Maximum and Minimum Sums of at Most Size K Subsequences | Medium | 7.2% | TopicsArrayMathDynamic ProgrammingSortingCombinatorics |
| 1578. Minimum Time to Make Rope Colorful | Medium | 7.2% | TopicsArrayStringDynamic ProgrammingGreedy |
| 2169. Count Operations to Obtain Zero | Easy | 7.2% | TopicsMathSimulation |
| 2654. Minimum Number of Operations to Make All Array Elements Equal to 1 | Medium | 7.2% | TopicsArrayMathNumber TheoryEuclidean AlgorithmGreatest Common Divisor |
| 3228. Maximum Number of Operations to Move Ones to the End | Medium | 7.2% | TopicsStringGreedyCounting |
| 3190. Find Minimum Operations to Make All Elements Divisible by Three | Easy | 7.2% | TopicsArrayMath |
| 2435. Paths in Matrix Whose Sum Is Divisible by K | Hard | 7.2% | TopicsArrayDynamic ProgrammingMatrix |
| 1776. Car Fleet II | Hard | 7.2% | TopicsArrayMathStackHeap (Priority Queue)Monotonic Stack |
| 1399. Count Largest Group | Easy | 7.2% | TopicsHash TableMathCounting |
| Find Followers Count | Easy | 7.2% | TopicsDatabase |
| Smallest Good Base | Hard | 7.2% | TopicsMathBinary Search |
| 2843. Count Symmetric Integers | Easy | 7.2% | TopicsMathEnumeration |
| 2498. Frog Jump II | Medium | 7.2% | TopicsArrayBinary SearchGreedy |
| 3013. Divide an Array Into Subarrays With Minimum Cost II | Hard | 7.2% | TopicsArrayHash TableSliding WindowHeap (Priority Queue) |
| Non-negative Integers without Consecutive Ones | Hard | 7.2% | TopicsDynamic Programming |
| 2383. Minimum Hours of Training to Win a Competition | Easy | 7.2% | TopicsArrayGreedy |
| 3721. Longest Balanced Subarray II | Hard | 7.2% | TopicsArrayHash TableDivide and ConquerSegment TreePrefix Sum |
