Given Kotlin's first-class functions, how would you implement a higher-order function that returns another function to multiply by a given factor?

hard📝 Application Q9 of 15

Kotlin - Functions

ACreate a function that multiplies two numbers directly without returning a function

BDefine a class with a method that multiplies by a fixed factor

CUse a global variable to store the factor and multiply inside a separate function

DWrite a function that takes an Int factor and returns a lambda multiplying input by that factor

Step-by-Step Solution

Solution:

Step 1: Understand higher-order functions
They can return functions as results.
Step 2: Define a function taking factor and returning a lambda
The lambda multiplies its input by the factor, enabling reusable multipliers.
Final Answer:
Write a function that takes an Int factor and returns a lambda multiplying input by that factor -> Option D
Quick Check:
Higher-order function returns function [OK]

Quick Trick: Functions can return other functions for flexible behavior [OK]

Common Mistakes:

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