How should I practice Initial and Final Accounts in a Transfer Chain?

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

Is Initial and Final Accounts in a Transfer Chain associated with Amazon?

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

Problem · Array

Initial and Final Accounts in a Transfer Chain

● Easy

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Problem statement

You are given directed account-transfer pairs [from, to] in arbitrary order. Together they form one non-branching chain containing every pair exactly once.

The problem statement continues

Pro

Examples

Example 1

transfers = [[222,111],[111,333],[444,222]]return = [444,333]

The complete chain is 444 to 222 to 111 to 333.

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