How should I practice Virtual Card Transaction Validator?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Capital One onsite interview problems in FastPrep.

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Virtual Card Transaction Validator

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Problem statement

Determine whether a transaction may be authorized for a virtual card.

A transaction is valid exactly when the card is active, transactionDay is no later than expirationDay, the amount is positive, and the amount does not exceed remainingLimit.

Function

isVirtualCardTransactionValid(active: boolean, expirationDay: int, transactionDay: int, remainingLimit: int, amount: int) → boolean

Examples

Example 1

active = trueexpirationDay = 30transactionDay = 20remainingLimit = 500amount = 120return = true

The active card has not expired and has enough remaining limit.

Example 2

active = trueexpirationDay = 30transactionDay = 31remainingLimit = 500amount = 120return = false

The transaction occurs after the expiration day.

Example 3

active = falseexpirationDay = 30transactionDay = 20remainingLimit = 500amount = 120return = false

An inactive card cannot authorize a transaction.

Constraints

0 <= transactionDay, expirationDay <= 10^9.
0 <= remainingLimit <= 10^9.
-10^9 <= amount <= 10^9.