Snapshot Array

Explore how to implement a Snapshot Array data structure that tracks values over time, supports efficient snapshot capture, and allows retrieval of past states. Understand the constructor, set, snapshot, and get operations with constraints and practice solving related coding problems.

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Statement

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 $n^{th}$ ...