Answering Diagram Questions

Last updated: May 1, 2025

This article explains how to answer Diagram Questions in HackerRank Tests using the integrated draw.io diagramming tool. The tool offers various pre-defined shapes for creating UML diagrams, Entity-Relationship diagrams, flowcharts, and more. Follow these instructions to understand the tool’s features and workflow.

The feature-rich draw.io diagramming tool simplifies creating complex diagrams with pre-built shapes and categories. It supports:

  • UML diagrams (e.g., Classes, Objects, Attributes)

  • Entity-relationship diagrams (e.g., Tables, Columns, Rows)

  • Flowcharts and others.

Refer to the draw.io training material for in-depth guidance on using this tool.

Steps to Answer Diagram Questions

Once inside the test

  • Select the relevant Diagram Question in the test or click Solve to view the question and the diagram editor.

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  • The left pane lists various shape categories, such as UML, Entity-Relationship, and more depending on the question.

  • Expand a category to view its shapes. E.g., Classes, Entities, Associations

  • Drag and drop or double-click on a shape to add it to the editor.

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Edit and format Diagram Shapes

  • Double-click a shape to define its properties. E.g., name, attributes, data types.

  • Use the panel in the top menu to customize text, styles, and shape arrangements, or click on the + icon to view more options.

Describe Your Diagram

  • Add a textual description of your diagram in the provided Explanation area to clarify its purpose.

Save and Submit

  • Click Submit Answer to save.

    • You can modify and resubmit before the test ends.

  • When you finish the test, click Submit Test and confirm.

Notes

  • Only shape categories allowed by the test setter will appear in the left pane. For example, if creating a UML diagram, only UML-related shapes might be available as seen in the image above.

  • Make sure to adhere to the test requirements when designing your diagram.

Tips for Effective Diagramming

  • Keep diagrams clear and concise.

  • Label shapes appropriately to represent their purpose.

  • Use formatting options to enhance readability.