| ID | Title | Difficulty |
|---|---|---|
| 295 | Find Median from Data Stream | Hard |
| 703 | Kth Largest Element in a Stream | Easy |
| 901 | Online Stock Span | Medium |
| 933 | Number of Recent Calls | Easy |
| 1032 | Stream of Characters | Hard |
| 1352 | Product of the Last K Numbers | Medium |
| 1472 | Design Browser History | Medium |
| 1656 | Design an Ordered Stream | Easy |
| 1670 | Design Front Middle Back Queue | Medium |
| 2034 | Stock Price Fluctuation | Medium |
| 2102 | Sequentially Ordinal Rank Tracker | Hard |
| 2526 | Find Consecutive Integers from a Data Stream | Medium |