Part $($a$)$: Storing Bounded Sensor Readings

If each reading r is a positive integer number representing sensor data $($such as temperature or humidity$)$

within the bounded range $[0,$R$)$ for some small enough R$,$ design a system to store the sensor readings such that:

$$ The time complexity for inserting a new reading, searching for an arbitrary reading, searching for a

sensor$$s most recent reading, and deleting the sensor$$s most recent readings is O$(1).$

$$ Explain how you would structure the data and achieve constant time operations