How should I practice Final File Paths After Sequential Moves?

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Final File Paths After Sequential Moves

Google● MediumINTERNONSITE INTERVIEW

Problem statement

Each entry in paths is the initial path of a distinct file. Process moves in order. A move [source, destination] changes the path of the file currently at source to destination.

Every move is valid: its source exists, and its destination is unoccupied immediately before that move. Moves affect individual files; paths do not represent directory moves.

The problem statement continues

Pro

Examples

Example 1

paths = ["/a","/b"]moves = [["/a","/c"],["/b","/a"],["/c","/d"]]return = ["/d","/a"]

The first file moves from /a to /c and then /d. The second file reuses the now-free /a.

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