Missing Skills For The Project — (Java Coding Question)

Solving Java Coding Interview Questions

Problem

Imagine we have two lists:

1. List A: Skills of employees in the marketing department.

2. List B: Skills required for a new project.

Example Data

• List A (Marketing Skills): ["SEO", "Content Creation", "Social Media Management", "Email Marketing"]

• List B (Project Requirements): ["SEO", "Graphic Design", "Data Analysis", "Content Creation"]

Goal

We have to find:

• Skills that the marketing team possesses but are not required for the project.

• Skills required for the project that the marketing team does not possess.

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Solution

• The DisjointList the class contains a method find that identifies elements in a primary list that are not present in a secondary list. It achieves this by first converting the secondary list into a HashSet for fast lookups, allowing for efficient membership testing.

• The method then iterates through each element in the primary list, checking if it exists in the HashSet. If an element from the primary list is not found in the secondary list, it is added to a result list called disjoint.

• The method returns this list of disjoint elements, effectively providing a simple and efficient way to find unique items in the primary list.

Testing

• Now that we have logic implemented, we can write our tests to verify if it works as expected.

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