Snapshot Array

Understand how to implement a Snapshot Array that records changes over time. Learn to set values at specific indices, capture snapshots with unique IDs, and retrieve past values using these snapshots. This lesson helps you design custom data structures to track state changes efficiently.

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In this challenge, you have to implement a Snapshot Array with the following properties:

Constructor (length): This is the constructor and it initializes the data structure to hold the specified number of indexes.
Set Value (idx, val): This property sets the value at a given index idx to value val.
Snapshot(): This method takes no parameters and returns the Snap ID. Snap ID is the number of times that the snapshot function was called, less $1$ , as we start the count at $0$ . The first time this function is called, it saves a snapshot and returns $0$ . The $n^{th}$ ...