How should I practice Trace Pointer Rebinding and Pointee Updates?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Arista Networks phone screen problems in FastPrep.

Is Trace Pointer Rebinding and Pointee Updates associated with Arista Networks?

FastPrep tags this as a Arista Networks phone screen coding practice problem when the problem catalog has that company and stage context.

Trace Pointer Rebinding and Pointee Updates

Arista Networks● EasyFULLTIMEPHONE SCREEN

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Problem statement

A function receives a pointer to a caller-owned integer by value. Process each operation in order:

WRITE:x writes x through the function's current pointer.
REBIND:x changes only the function's local pointer copy so it points to a local integer whose value is x.

Once rebound, later writes affect the local integer rather than the caller-owned integer. Return the caller-owned value after the function returns.

Function

callerValueAfter(initialValue: int, operations: String[]) → int

Examples

Example 1

initialValue = 10operations = ["REBIND:100"]return = 10

Rebinding changes only the local pointer copy, so the caller still observes 10.

Example 2

initialValue = 10operations = ["WRITE:100"]return = 100

Writing through the original pointer updates the caller-owned integer.

Constraints

-1000000000 <= initialValue <= 1000000000.
0 <= operations.length <= 100000.
Every operation is WRITE:x or REBIND:x, where x is a signed 32-bit integer.

Source note: Author-written prompt excerpt retained for source fidelity.