Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1186 | Finding 3-Digit Even Numbers | Easy | ArrayHash TableRecursion |
| 1187 | Finding MK Average | Hard | DesignQueueHeap (Priority Queue) |
| 1188 | Finding Pairs With a Certain Sum | Medium | ArrayHash TableDesign |
| 1189 | Finding the Number of Visible Mountains | Medium | ArrayStackSorting |
| 1190 | Finding the Topic of Each Post | Hard | Database |
| 1191 | Finding the Users Active Minutes | Medium | ArrayHash Table |
| 1192 | First and Last Call On the Same Day | Hard | Database |
| 1193 | First Completely Painted Row or Column | Medium | ArrayHash TableMatrix |
| 1194 | First Day Where You Have Been in All the Rooms | Medium | ArrayDynamic Programming |
| 1195 | First Letter Capitalization | Hard | Database |
| 1196 | First Letter Capitalization II | Hard | Database |
| 1197 | First Letter to Appear Twice | Easy | Hash TableStringBit Manipulation |
| 1198 | First Missing Positive | Hard | ArrayHash Table |
| 1199 | First Unique Character in a String | Easy | Hash TableStringQueue |
| 1200 | First Unique Number | Medium | ArrayHash TableDesign |
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