The Versioned Scroll
Solutions The simplest solution to this problem involves storing a copy of the entire array every time a new version is saved. This way, to retrieve the value of an element at a specific version, we can simply access the saved array for that version. However, while easy to understand, this approach is highly inefficient for large arrays or when versions are taken frequently. If there are \(N\) calls to each function, this method would store \(N\) full copies of the array, leading to significant memory usage and poor time performance.
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