How should I practice Match a Variadic Function Signature?

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

Is Match a Variadic Function Signature associated with Confluent?

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

Problem · Array

Match a Variadic Function Signature

Learn this problem

● Easy

ConfluentFULLTIMEPHONE SCREEN

Problem statement

You are given the declared parameter type tokens of one function in parameterTypes, a flag isVariadicFunction, and the ordered argument type tokens of one call in argumentTypes.

Return true if the call matches the declared signature. Otherwise, return false.

Matching rules

Type tokens are opaque strings. Two tokens match only when they are exactly equal, including case. There is no trimming, aliasing, coercion, subtyping, or wildcard behavior.
When isVariadicFunction is false, the call must have exactly the same number of arguments as the signature, and every token must match at the same position.
When isVariadicFunction is true, parameterTypes is non-empty. Its final token is the variadic type, while all earlier tokens form the fixed prefix.
The variadic type may occur zero or more times. Therefore, a variadic signature with m declared tokens accepts calls with at least m - 1 arguments.
Every argument after the fixed prefix must exactly equal the final declared variadic token.

Function

matchesFunctionSignature(parameterTypes: String[], isVariadicFunction: boolean, argumentTypes: String[]) → boolean

Examples

Example 1

parameterTypes = ["String","Integer"]isVariadicFunction = falseargumentTypes = ["String","Integer"]return = true

This is a fixed signature. The call has the same arity, and both type tokens match at their positions.

Example 2

parameterTypes = ["String","Integer"]isVariadicFunction = trueargumentTypes = ["String","Integer","Integer","Integer"]return = true

String is the fixed prefix. Every remaining argument exactly matches the variadic type Integer.

Example 3

parameterTypes = ["String","Integer"]isVariadicFunction = trueargumentTypes = ["String"]return = true

The fixed prefix matches, and the final variadic type is allowed to occur zero times.

Example 4

parameterTypes = ["String","Integer"]isVariadicFunction = trueargumentTypes = ["String","Integer","Double"]return = false

The last argument is Double, which does not exactly match the variadic type Integer.

Constraints

0 <= parameterTypes.length <= 10^5
0 <= argumentTypes.length <= 10^5
If isVariadicFunction is true, then parameterTypes.length >= 1.
Every type token is a non-empty ASCII string of at most 100 characters.