JavaScriptbeginner

CODING EXERCISE

Reverse the words

Return the words in a sentence in reverse order without reversing each word.

Requirements

Return the expected value for every provided input.
Keep the solution readable and cover edge cases.
Avoid mutating the input unless the prompt requires it.

Example

Input

build great things

Expected output

things great build

Show a hint

Start with the simplest correct solution, then test an empty or minimal input.

tests

RUNTIME OUTPUT

Ready to run the file open above against 2 tests.

Runs the open file in a restricted browser worker

A PRACTICAL PLAN

Work through Reverse the words with intent.

Translate the contract.Turn the requirements into a short checklist before editing your-solution.js.
Use the example as evidence.Predict the result for the supplied input, then add one boundary case such as an empty value, a limit, or unexpected input.
Review the implementation.Compare your choices against solution.js only after a real attempt.

EXERCISE FAQ

Before you move on.

What does “Reverse the words” teach?

This beginner JavaScript exercise focuses on JavaScript. Its requirements define the exact behavior to implement before you write code.

How should I validate this JavaScript solution?

Start with the displayed example input and expected output, then test a boundary case suggested by the requirements. Open your-solution.js and select Run code. The browser executes that file in an isolated worker against the visible test cases.

When should I open the reference solution?

Attempt Reverse the words first. Then open the read-only solution file to compare the contract, edge-case handling, and implementation choices—not simply to copy the final code.

Reverse the words

Requirements

Example

Work through Reverse the words with intent.

Before you move on.

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